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diff --git a/docs/sqlglot/optimizer/qualify_columns.html b/docs/sqlglot/optimizer/qualify_columns.html index 103e1e0..3ba75a4 100644 --- a/docs/sqlglot/optimizer/qualify_columns.html +++ b/docs/sqlglot/optimizer/qualify_columns.html @@ -117,581 +117,584 @@ </span><span id="L-29"><a href="#L-29"><span class="linenos"> 29</span></a><span class="sd"> 'SELECT tbl.col AS col FROM tbl'</span> </span><span id="L-30"><a href="#L-30"><span class="linenos"> 30</span></a> </span><span id="L-31"><a href="#L-31"><span class="linenos"> 31</span></a><span class="sd"> Args:</span> -</span><span id="L-32"><a href="#L-32"><span class="linenos"> 32</span></a><span class="sd"> expression: expression to qualify</span> -</span><span id="L-33"><a href="#L-33"><span class="linenos"> 33</span></a><span class="sd"> schema: Database schema</span> -</span><span id="L-34"><a href="#L-34"><span class="linenos"> 34</span></a><span class="sd"> expand_alias_refs: whether or not to expand references to aliases</span> -</span><span id="L-35"><a href="#L-35"><span class="linenos"> 35</span></a><span class="sd"> infer_schema: whether or not to infer the schema if missing</span> -</span><span id="L-36"><a href="#L-36"><span class="linenos"> 36</span></a><span class="sd"> Returns:</span> -</span><span id="L-37"><a href="#L-37"><span class="linenos"> 37</span></a><span class="sd"> sqlglot.Expression: qualified expression</span> -</span><span id="L-38"><a href="#L-38"><span class="linenos"> 38</span></a><span class="sd"> """</span> -</span><span id="L-39"><a href="#L-39"><span class="linenos"> 39</span></a> <span class="n">schema</span> <span class="o">=</span> <span class="n">ensure_schema</span><span class="p">(</span><span class="n">schema</span><span class="p">)</span> -</span><span id="L-40"><a href="#L-40"><span class="linenos"> 40</span></a> <span class="n">infer_schema</span> <span class="o">=</span> <span class="n">schema</span><span class="o">.</span><span class="n">empty</span> <span class="k">if</span> <span class="n">infer_schema</span> <span class="ow">is</span> <span class="kc">None</span> <span class="k">else</span> <span class="n">infer_schema</span> -</span><span id="L-41"><a href="#L-41"><span class="linenos"> 41</span></a> -</span><span id="L-42"><a href="#L-42"><span class="linenos"> 42</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="L-43"><a href="#L-43"><span class="linenos"> 43</span></a> <span class="n">resolver</span> <span class="o">=</span> <span class="n">Resolver</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">schema</span><span class="p">,</span> <span class="n">infer_schema</span><span class="o">=</span><span class="n">infer_schema</span><span class="p">)</span> -</span><span id="L-44"><a href="#L-44"><span class="linenos"> 44</span></a> <span class="n">_pop_table_column_aliases</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">ctes</span><span class="p">)</span> -</span><span id="L-45"><a href="#L-45"><span class="linenos"> 45</span></a> <span class="n">_pop_table_column_aliases</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">derived_tables</span><span class="p">)</span> -</span><span id="L-46"><a href="#L-46"><span class="linenos"> 46</span></a> <span class="n">using_column_tables</span> <span class="o">=</span> <span class="n">_expand_using</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> -</span><span id="L-47"><a href="#L-47"><span class="linenos"> 47</span></a> -</span><span id="L-48"><a href="#L-48"><span class="linenos"> 48</span></a> <span class="k">if</span> <span class="n">schema</span><span class="o">.</span><span class="n">empty</span> <span class="ow">and</span> <span class="n">expand_alias_refs</span><span class="p">:</span> -</span><span id="L-49"><a href="#L-49"><span class="linenos"> 49</span></a> <span class="n">_expand_alias_refs</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> -</span><span id="L-50"><a href="#L-50"><span class="linenos"> 50</span></a> -</span><span id="L-51"><a href="#L-51"><span class="linenos"> 51</span></a> <span class="n">_qualify_columns</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> -</span><span id="L-52"><a href="#L-52"><span class="linenos"> 52</span></a> -</span><span id="L-53"><a href="#L-53"><span class="linenos"> 53</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">schema</span><span class="o">.</span><span class="n">empty</span> <span class="ow">and</span> <span class="n">expand_alias_refs</span><span class="p">:</span> -</span><span id="L-54"><a href="#L-54"><span class="linenos"> 54</span></a> <span class="n">_expand_alias_refs</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> -</span><span id="L-55"><a href="#L-55"><span class="linenos"> 55</span></a> -</span><span id="L-56"><a href="#L-56"><span class="linenos"> 56</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">UDTF</span><span class="p">):</span> -</span><span id="L-57"><a href="#L-57"><span class="linenos"> 57</span></a> <span class="n">_expand_stars</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">,</span> <span class="n">using_column_tables</span><span class="p">)</span> -</span><span id="L-58"><a href="#L-58"><span class="linenos"> 58</span></a> <span class="n">_qualify_outputs</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> -</span><span id="L-59"><a href="#L-59"><span class="linenos"> 59</span></a> <span class="n">_expand_group_by</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> -</span><span id="L-60"><a href="#L-60"><span class="linenos"> 60</span></a> <span class="n">_expand_order_by</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> -</span><span id="L-61"><a href="#L-61"><span class="linenos"> 61</span></a> -</span><span id="L-62"><a href="#L-62"><span class="linenos"> 62</span></a> <span class="k">return</span> <span class="n">expression</span> -</span><span id="L-63"><a href="#L-63"><span class="linenos"> 63</span></a> +</span><span id="L-32"><a href="#L-32"><span class="linenos"> 32</span></a><span class="sd"> expression: Expression to qualify.</span> +</span><span id="L-33"><a href="#L-33"><span class="linenos"> 33</span></a><span class="sd"> schema: Database schema.</span> +</span><span id="L-34"><a href="#L-34"><span class="linenos"> 34</span></a><span class="sd"> expand_alias_refs: Whether or not to expand references to aliases.</span> +</span><span id="L-35"><a href="#L-35"><span class="linenos"> 35</span></a><span class="sd"> infer_schema: Whether or not to infer the schema if missing.</span> +</span><span id="L-36"><a href="#L-36"><span class="linenos"> 36</span></a> +</span><span id="L-37"><a href="#L-37"><span class="linenos"> 37</span></a><span class="sd"> Returns:</span> +</span><span id="L-38"><a href="#L-38"><span class="linenos"> 38</span></a><span class="sd"> The qualified expression.</span> +</span><span id="L-39"><a href="#L-39"><span class="linenos"> 39</span></a><span class="sd"> """</span> +</span><span id="L-40"><a href="#L-40"><span class="linenos"> 40</span></a> <span class="n">schema</span> <span class="o">=</span> <span class="n">ensure_schema</span><span class="p">(</span><span class="n">schema</span><span class="p">)</span> +</span><span id="L-41"><a href="#L-41"><span class="linenos"> 41</span></a> <span class="n">infer_schema</span> <span class="o">=</span> <span class="n">schema</span><span class="o">.</span><span class="n">empty</span> <span class="k">if</span> <span class="n">infer_schema</span> <span class="ow">is</span> <span class="kc">None</span> <span class="k">else</span> <span class="n">infer_schema</span> +</span><span id="L-42"><a href="#L-42"><span class="linenos"> 42</span></a> +</span><span id="L-43"><a href="#L-43"><span class="linenos"> 43</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-44"><a href="#L-44"><span class="linenos"> 44</span></a> <span class="n">resolver</span> <span class="o">=</span> <span class="n">Resolver</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">schema</span><span class="p">,</span> <span class="n">infer_schema</span><span class="o">=</span><span class="n">infer_schema</span><span class="p">)</span> +</span><span id="L-45"><a href="#L-45"><span class="linenos"> 45</span></a> <span class="n">_pop_table_column_aliases</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">ctes</span><span class="p">)</span> +</span><span id="L-46"><a href="#L-46"><span class="linenos"> 46</span></a> <span class="n">_pop_table_column_aliases</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">derived_tables</span><span class="p">)</span> +</span><span id="L-47"><a href="#L-47"><span class="linenos"> 47</span></a> <span class="n">using_column_tables</span> <span class="o">=</span> <span class="n">_expand_using</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> +</span><span id="L-48"><a href="#L-48"><span class="linenos"> 48</span></a> +</span><span id="L-49"><a href="#L-49"><span class="linenos"> 49</span></a> <span class="k">if</span> <span class="n">schema</span><span class="o">.</span><span class="n">empty</span> <span class="ow">and</span> <span class="n">expand_alias_refs</span><span class="p">:</span> +</span><span id="L-50"><a href="#L-50"><span class="linenos"> 50</span></a> <span class="n">_expand_alias_refs</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> +</span><span id="L-51"><a href="#L-51"><span class="linenos"> 51</span></a> +</span><span id="L-52"><a href="#L-52"><span class="linenos"> 52</span></a> <span class="n">_qualify_columns</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> +</span><span id="L-53"><a href="#L-53"><span class="linenos"> 53</span></a> +</span><span id="L-54"><a href="#L-54"><span class="linenos"> 54</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">schema</span><span class="o">.</span><span class="n">empty</span> <span class="ow">and</span> <span class="n">expand_alias_refs</span><span class="p">:</span> +</span><span id="L-55"><a href="#L-55"><span class="linenos"> 55</span></a> <span class="n">_expand_alias_refs</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> +</span><span id="L-56"><a href="#L-56"><span class="linenos"> 56</span></a> +</span><span id="L-57"><a href="#L-57"><span class="linenos"> 57</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">UDTF</span><span class="p">):</span> +</span><span id="L-58"><a href="#L-58"><span class="linenos"> 58</span></a> <span class="n">_expand_stars</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">,</span> <span class="n">using_column_tables</span><span class="p">)</span> +</span><span id="L-59"><a href="#L-59"><span class="linenos"> 59</span></a> <span class="n">_qualify_outputs</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> +</span><span id="L-60"><a href="#L-60"><span class="linenos"> 60</span></a> <span class="n">_expand_group_by</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> +</span><span id="L-61"><a href="#L-61"><span class="linenos"> 61</span></a> <span class="n">_expand_order_by</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> +</span><span id="L-62"><a href="#L-62"><span class="linenos"> 62</span></a> +</span><span id="L-63"><a href="#L-63"><span class="linenos"> 63</span></a> <span class="k">return</span> <span class="n">expression</span> </span><span id="L-64"><a href="#L-64"><span class="linenos"> 64</span></a> -</span><span id="L-65"><a href="#L-65"><span class="linenos"> 65</span></a><span class="k">def</span> <span class="nf">validate_qualify_columns</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">E</span><span class="p">)</span> <span class="o">-></span> <span class="n">E</span><span class="p">:</span> -</span><span id="L-66"><a href="#L-66"><span class="linenos"> 66</span></a><span class="w"> </span><span class="sd">"""Raise an `OptimizeError` if any columns aren't qualified"""</span> -</span><span id="L-67"><a href="#L-67"><span class="linenos"> 67</span></a> <span class="n">unqualified_columns</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="L-68"><a href="#L-68"><span class="linenos"> 68</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="L-69"><a href="#L-69"><span class="linenos"> 69</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">):</span> -</span><span id="L-70"><a href="#L-70"><span class="linenos"> 70</span></a> <span class="n">unqualified_columns</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">unqualified_columns</span><span class="p">)</span> -</span><span id="L-71"><a href="#L-71"><span class="linenos"> 71</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">external_columns</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">scope</span><span class="o">.</span><span class="n">is_correlated_subquery</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">scope</span><span class="o">.</span><span class="n">pivots</span><span class="p">:</span> -</span><span id="L-72"><a href="#L-72"><span class="linenos"> 72</span></a> <span class="n">column</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">external_columns</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> -</span><span id="L-73"><a href="#L-73"><span class="linenos"> 73</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span> -</span><span id="L-74"><a href="#L-74"><span class="linenos"> 74</span></a> <span class="sa">f</span><span class="s2">"""Column '</span><span class="si">{</span><span class="n">column</span><span class="si">}</span><span class="s2">' could not be resolved</span><span class="si">{</span><span class="sa">f</span><span class="s2">" for table: '</span><span class="si">{</span><span class="n">column</span><span class="o">.</span><span class="n">table</span><span class="si">}</span><span class="s2">'"</span><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="n">column</span><span class="o">.</span><span class="n">table</span><span class="w"> </span><span class="k">else</span><span class="w"> </span><span class="s1">''</span><span class="si">}</span><span class="s2">"""</span> -</span><span id="L-75"><a href="#L-75"><span class="linenos"> 75</span></a> <span class="p">)</span> -</span><span id="L-76"><a href="#L-76"><span class="linenos"> 76</span></a> -</span><span id="L-77"><a href="#L-77"><span class="linenos"> 77</span></a> <span class="k">if</span> <span class="n">unqualified_columns</span><span class="p">:</span> -</span><span id="L-78"><a href="#L-78"><span class="linenos"> 78</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Ambiguous columns: </span><span class="si">{</span><span class="n">unqualified_columns</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> -</span><span id="L-79"><a href="#L-79"><span class="linenos"> 79</span></a> <span class="k">return</span> <span class="n">expression</span> -</span><span id="L-80"><a href="#L-80"><span class="linenos"> 80</span></a> +</span><span id="L-65"><a href="#L-65"><span class="linenos"> 65</span></a> +</span><span id="L-66"><a href="#L-66"><span class="linenos"> 66</span></a><span class="k">def</span> <span class="nf">validate_qualify_columns</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">E</span><span class="p">)</span> <span class="o">-></span> <span class="n">E</span><span class="p">:</span> +</span><span id="L-67"><a href="#L-67"><span class="linenos"> 67</span></a><span class="w"> </span><span class="sd">"""Raise an `OptimizeError` if any columns aren't qualified"""</span> +</span><span id="L-68"><a href="#L-68"><span class="linenos"> 68</span></a> <span class="n">unqualified_columns</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="L-69"><a href="#L-69"><span class="linenos"> 69</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-70"><a href="#L-70"><span class="linenos"> 70</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">):</span> +</span><span id="L-71"><a href="#L-71"><span class="linenos"> 71</span></a> <span class="n">unqualified_columns</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">unqualified_columns</span><span class="p">)</span> +</span><span id="L-72"><a href="#L-72"><span class="linenos"> 72</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">external_columns</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">scope</span><span class="o">.</span><span class="n">is_correlated_subquery</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">scope</span><span class="o">.</span><span class="n">pivots</span><span class="p">:</span> +</span><span id="L-73"><a href="#L-73"><span class="linenos"> 73</span></a> <span class="n">column</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">external_columns</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> +</span><span id="L-74"><a href="#L-74"><span class="linenos"> 74</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span> +</span><span id="L-75"><a href="#L-75"><span class="linenos"> 75</span></a> <span class="sa">f</span><span class="s2">"""Column '</span><span class="si">{</span><span class="n">column</span><span class="si">}</span><span class="s2">' could not be resolved</span><span class="si">{</span><span class="sa">f</span><span class="s2">" for table: '</span><span class="si">{</span><span class="n">column</span><span class="o">.</span><span class="n">table</span><span class="si">}</span><span class="s2">'"</span><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="n">column</span><span class="o">.</span><span class="n">table</span><span class="w"> </span><span class="k">else</span><span class="w"> </span><span class="s1">''</span><span class="si">}</span><span class="s2">"""</span> +</span><span id="L-76"><a href="#L-76"><span class="linenos"> 76</span></a> <span class="p">)</span> +</span><span id="L-77"><a href="#L-77"><span class="linenos"> 77</span></a> +</span><span id="L-78"><a href="#L-78"><span class="linenos"> 78</span></a> <span class="k">if</span> <span class="n">unqualified_columns</span><span class="p">:</span> +</span><span id="L-79"><a href="#L-79"><span class="linenos"> 79</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Ambiguous columns: </span><span class="si">{</span><span class="n">unqualified_columns</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="L-80"><a href="#L-80"><span class="linenos"> 80</span></a> <span class="k">return</span> <span class="n">expression</span> </span><span id="L-81"><a href="#L-81"><span class="linenos"> 81</span></a> -</span><span id="L-82"><a href="#L-82"><span class="linenos"> 82</span></a><span class="k">def</span> <span class="nf">_pop_table_column_aliases</span><span class="p">(</span><span class="n">derived_tables</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">CTE</span> <span class="o">|</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">])</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> -</span><span id="L-83"><a href="#L-83"><span class="linenos"> 83</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-84"><a href="#L-84"><span class="linenos"> 84</span></a><span class="sd"> Remove table column aliases.</span> -</span><span id="L-85"><a href="#L-85"><span class="linenos"> 85</span></a> -</span><span id="L-86"><a href="#L-86"><span class="linenos"> 86</span></a><span class="sd"> (e.g. SELECT ... FROM (SELECT ...) AS foo(col1, col2)</span> -</span><span id="L-87"><a href="#L-87"><span class="linenos"> 87</span></a><span class="sd"> """</span> -</span><span id="L-88"><a href="#L-88"><span class="linenos"> 88</span></a> <span class="k">for</span> <span class="n">derived_table</span> <span class="ow">in</span> <span class="n">derived_tables</span><span class="p">:</span> -</span><span id="L-89"><a href="#L-89"><span class="linenos"> 89</span></a> <span class="n">table_alias</span> <span class="o">=</span> <span class="n">derived_table</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">)</span> -</span><span id="L-90"><a href="#L-90"><span class="linenos"> 90</span></a> <span class="k">if</span> <span class="n">table_alias</span><span class="p">:</span> -</span><span id="L-91"><a href="#L-91"><span class="linenos"> 91</span></a> <span class="n">table_alias</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="s2">"columns"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> -</span><span id="L-92"><a href="#L-92"><span class="linenos"> 92</span></a> +</span><span id="L-82"><a href="#L-82"><span class="linenos"> 82</span></a> +</span><span id="L-83"><a href="#L-83"><span class="linenos"> 83</span></a><span class="k">def</span> <span class="nf">_pop_table_column_aliases</span><span class="p">(</span><span class="n">derived_tables</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">CTE</span> <span class="o">|</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">])</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> +</span><span id="L-84"><a href="#L-84"><span class="linenos"> 84</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-85"><a href="#L-85"><span class="linenos"> 85</span></a><span class="sd"> Remove table column aliases.</span> +</span><span id="L-86"><a href="#L-86"><span class="linenos"> 86</span></a> +</span><span id="L-87"><a href="#L-87"><span class="linenos"> 87</span></a><span class="sd"> (e.g. SELECT ... FROM (SELECT ...) AS foo(col1, col2)</span> +</span><span id="L-88"><a href="#L-88"><span class="linenos"> 88</span></a><span class="sd"> """</span> +</span><span id="L-89"><a href="#L-89"><span class="linenos"> 89</span></a> <span class="k">for</span> <span class="n">derived_table</span> <span class="ow">in</span> <span class="n">derived_tables</span><span class="p">:</span> +</span><span id="L-90"><a href="#L-90"><span class="linenos"> 90</span></a> <span class="n">table_alias</span> <span class="o">=</span> <span class="n">derived_table</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">)</span> +</span><span id="L-91"><a href="#L-91"><span class="linenos"> 91</span></a> <span class="k">if</span> <span class="n">table_alias</span><span class="p">:</span> +</span><span id="L-92"><a href="#L-92"><span class="linenos"> 92</span></a> <span class="n">table_alias</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="s2">"columns"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> </span><span id="L-93"><a href="#L-93"><span class="linenos"> 93</span></a> -</span><span id="L-94"><a href="#L-94"><span class="linenos"> 94</span></a><span class="k">def</span> <span class="nf">_expand_using</span><span class="p">(</span><span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">:</span> <span class="n">Resolver</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">Any</span><span class="p">]:</span> -</span><span id="L-95"><a href="#L-95"><span class="linenos"> 95</span></a> <span class="n">joins</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">))</span> -</span><span id="L-96"><a href="#L-96"><span class="linenos"> 96</span></a> <span class="n">names</span> <span class="o">=</span> <span class="p">{</span><span class="n">join</span><span class="o">.</span><span class="n">alias_or_name</span> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">joins</span><span class="p">}</span> -</span><span id="L-97"><a href="#L-97"><span class="linenos"> 97</span></a> <span class="n">ordered</span> <span class="o">=</span> <span class="p">[</span><span class="n">key</span> <span class="k">for</span> <span class="n">key</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span> <span class="k">if</span> <span class="n">key</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">names</span><span class="p">]</span> -</span><span id="L-98"><a href="#L-98"><span class="linenos"> 98</span></a> -</span><span id="L-99"><a href="#L-99"><span class="linenos"> 99</span></a> <span class="c1"># Mapping of automatically joined column names to an ordered set of source names (dict).</span> -</span><span id="L-100"><a href="#L-100"><span class="linenos">100</span></a> <span class="n">column_tables</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">Any</span><span class="p">]]</span> <span class="o">=</span> <span class="p">{}</span> -</span><span id="L-101"><a href="#L-101"><span class="linenos">101</span></a> -</span><span id="L-102"><a href="#L-102"><span class="linenos">102</span></a> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">joins</span><span class="p">:</span> -</span><span id="L-103"><a href="#L-103"><span class="linenos">103</span></a> <span class="n">using</span> <span class="o">=</span> <span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"using"</span><span class="p">)</span> -</span><span id="L-104"><a href="#L-104"><span class="linenos">104</span></a> -</span><span id="L-105"><a href="#L-105"><span class="linenos">105</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">using</span><span class="p">:</span> -</span><span id="L-106"><a href="#L-106"><span class="linenos">106</span></a> <span class="k">continue</span> -</span><span id="L-107"><a href="#L-107"><span class="linenos">107</span></a> -</span><span id="L-108"><a href="#L-108"><span class="linenos">108</span></a> <span class="n">join_table</span> <span class="o">=</span> <span class="n">join</span><span class="o">.</span><span class="n">alias_or_name</span> -</span><span id="L-109"><a href="#L-109"><span class="linenos">109</span></a> -</span><span id="L-110"><a href="#L-110"><span class="linenos">110</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="p">{}</span> -</span><span id="L-111"><a href="#L-111"><span class="linenos">111</span></a> -</span><span id="L-112"><a href="#L-112"><span class="linenos">112</span></a> <span class="k">for</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">:</span> -</span><span id="L-113"><a href="#L-113"><span class="linenos">113</span></a> <span class="k">if</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">ordered</span><span class="p">:</span> -</span><span id="L-114"><a href="#L-114"><span class="linenos">114</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">k</span><span class="p">):</span> -</span><span id="L-115"><a href="#L-115"><span class="linenos">115</span></a> <span class="k">if</span> <span class="n">column</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span> -</span><span id="L-116"><a href="#L-116"><span class="linenos">116</span></a> <span class="n">columns</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">k</span> -</span><span id="L-117"><a href="#L-117"><span class="linenos">117</span></a> -</span><span id="L-118"><a href="#L-118"><span class="linenos">118</span></a> <span class="n">source_table</span> <span class="o">=</span> <span class="n">ordered</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span> -</span><span id="L-119"><a href="#L-119"><span class="linenos">119</span></a> <span class="n">ordered</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">join_table</span><span class="p">)</span> -</span><span id="L-120"><a href="#L-120"><span class="linenos">120</span></a> <span class="n">join_columns</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">join_table</span><span class="p">)</span> -</span><span id="L-121"><a href="#L-121"><span class="linenos">121</span></a> <span class="n">conditions</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="L-122"><a href="#L-122"><span class="linenos">122</span></a> -</span><span id="L-123"><a href="#L-123"><span class="linenos">123</span></a> <span class="k">for</span> <span class="n">identifier</span> <span class="ow">in</span> <span class="n">using</span><span class="p">:</span> -</span><span id="L-124"><a href="#L-124"><span class="linenos">124</span></a> <span class="n">identifier</span> <span class="o">=</span> <span class="n">identifier</span><span class="o">.</span><span class="n">name</span> -</span><span id="L-125"><a href="#L-125"><span class="linenos">125</span></a> <span class="n">table</span> <span class="o">=</span> <span class="n">columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">identifier</span><span class="p">)</span> -</span><span id="L-126"><a href="#L-126"><span class="linenos">126</span></a> -</span><span id="L-127"><a href="#L-127"><span class="linenos">127</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table</span> <span class="ow">or</span> <span class="n">identifier</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">join_columns</span><span class="p">:</span> -</span><span id="L-128"><a href="#L-128"><span class="linenos">128</span></a> <span class="k">if</span> <span class="n">columns</span> <span class="ow">and</span> <span class="n">join_columns</span><span class="p">:</span> -</span><span id="L-129"><a href="#L-129"><span class="linenos">129</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Cannot automatically join: </span><span class="si">{</span><span class="n">identifier</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> -</span><span id="L-130"><a href="#L-130"><span class="linenos">130</span></a> -</span><span id="L-131"><a href="#L-131"><span class="linenos">131</span></a> <span class="n">table</span> <span class="o">=</span> <span class="n">table</span> <span class="ow">or</span> <span class="n">source_table</span> -</span><span id="L-132"><a href="#L-132"><span class="linenos">132</span></a> <span class="n">conditions</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> -</span><span id="L-133"><a href="#L-133"><span class="linenos">133</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">condition</span><span class="p">(</span> -</span><span id="L-134"><a href="#L-134"><span class="linenos">134</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">EQ</span><span class="p">(</span> -</span><span id="L-135"><a href="#L-135"><span class="linenos">135</span></a> <span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">identifier</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">table</span><span class="p">),</span> -</span><span id="L-136"><a href="#L-136"><span class="linenos">136</span></a> <span class="n">expression</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">identifier</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">join_table</span><span class="p">),</span> -</span><span id="L-137"><a href="#L-137"><span class="linenos">137</span></a> <span class="p">)</span> -</span><span id="L-138"><a href="#L-138"><span class="linenos">138</span></a> <span class="p">)</span> -</span><span id="L-139"><a href="#L-139"><span class="linenos">139</span></a> <span class="p">)</span> -</span><span id="L-140"><a href="#L-140"><span class="linenos">140</span></a> -</span><span id="L-141"><a href="#L-141"><span class="linenos">141</span></a> <span class="c1"># Set all values in the dict to None, because we only care about the key ordering</span> -</span><span id="L-142"><a href="#L-142"><span class="linenos">142</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="n">column_tables</span><span class="o">.</span><span class="n">setdefault</span><span class="p">(</span><span class="n">identifier</span><span class="p">,</span> <span class="p">{})</span> -</span><span id="L-143"><a href="#L-143"><span class="linenos">143</span></a> <span class="k">if</span> <span class="n">table</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> -</span><span id="L-144"><a href="#L-144"><span class="linenos">144</span></a> <span class="n">tables</span><span class="p">[</span><span class="n">table</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="L-145"><a href="#L-145"><span class="linenos">145</span></a> <span class="k">if</span> <span class="n">join_table</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> -</span><span id="L-146"><a href="#L-146"><span class="linenos">146</span></a> <span class="n">tables</span><span class="p">[</span><span class="n">join_table</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="L-147"><a href="#L-147"><span class="linenos">147</span></a> -</span><span id="L-148"><a href="#L-148"><span class="linenos">148</span></a> <span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="s2">"using"</span><span class="p">)</span> -</span><span id="L-149"><a href="#L-149"><span class="linenos">149</span></a> <span class="n">join</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"on"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span><span class="p">(</span><span class="o">*</span><span class="n">conditions</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">))</span> -</span><span id="L-150"><a href="#L-150"><span class="linenos">150</span></a> -</span><span id="L-151"><a href="#L-151"><span class="linenos">151</span></a> <span class="k">if</span> <span class="n">column_tables</span><span class="p">:</span> -</span><span id="L-152"><a href="#L-152"><span class="linenos">152</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">columns</span><span class="p">:</span> -</span><span id="L-153"><a href="#L-153"><span class="linenos">153</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">column</span><span class="o">.</span><span class="n">table</span> <span class="ow">and</span> <span class="n">column</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">column_tables</span><span class="p">:</span> -</span><span id="L-154"><a href="#L-154"><span class="linenos">154</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="n">column_tables</span><span class="p">[</span><span class="n">column</span><span class="o">.</span><span class="n">name</span><span class="p">]</span> -</span><span id="L-155"><a href="#L-155"><span class="linenos">155</span></a> <span class="n">coalesce</span> <span class="o">=</span> <span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">column</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">table</span><span class="p">)</span> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">]</span> -</span><span id="L-156"><a href="#L-156"><span class="linenos">156</span></a> <span class="n">replacement</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">Coalesce</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">coalesce</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">expressions</span><span class="o">=</span><span class="n">coalesce</span><span class="p">[</span><span class="mi">1</span><span class="p">:])</span> -</span><span id="L-157"><a href="#L-157"><span class="linenos">157</span></a> -</span><span id="L-158"><a href="#L-158"><span class="linenos">158</span></a> <span class="c1"># Ensure selects keep their output name</span> -</span><span id="L-159"><a href="#L-159"><span class="linenos">159</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">column</span><span class="o">.</span><span class="n">parent</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">):</span> -</span><span id="L-160"><a href="#L-160"><span class="linenos">160</span></a> <span class="n">replacement</span> <span class="o">=</span> <span class="n">alias</span><span class="p">(</span><span class="n">replacement</span><span class="p">,</span> <span class="n">alias</span><span class="o">=</span><span class="n">column</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> -</span><span id="L-161"><a href="#L-161"><span class="linenos">161</span></a> -</span><span id="L-162"><a href="#L-162"><span class="linenos">162</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="n">replacement</span><span class="p">)</span> -</span><span id="L-163"><a href="#L-163"><span class="linenos">163</span></a> -</span><span id="L-164"><a href="#L-164"><span class="linenos">164</span></a> <span class="k">return</span> <span class="n">column_tables</span> -</span><span id="L-165"><a href="#L-165"><span class="linenos">165</span></a> +</span><span id="L-94"><a href="#L-94"><span class="linenos"> 94</span></a> +</span><span id="L-95"><a href="#L-95"><span class="linenos"> 95</span></a><span class="k">def</span> <span class="nf">_expand_using</span><span class="p">(</span><span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">:</span> <span class="n">Resolver</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">Any</span><span class="p">]:</span> +</span><span id="L-96"><a href="#L-96"><span class="linenos"> 96</span></a> <span class="n">joins</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">))</span> +</span><span id="L-97"><a href="#L-97"><span class="linenos"> 97</span></a> <span class="n">names</span> <span class="o">=</span> <span class="p">{</span><span class="n">join</span><span class="o">.</span><span class="n">alias_or_name</span> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">joins</span><span class="p">}</span> +</span><span id="L-98"><a href="#L-98"><span class="linenos"> 98</span></a> <span class="n">ordered</span> <span class="o">=</span> <span class="p">[</span><span class="n">key</span> <span class="k">for</span> <span class="n">key</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span> <span class="k">if</span> <span class="n">key</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">names</span><span class="p">]</span> +</span><span id="L-99"><a href="#L-99"><span class="linenos"> 99</span></a> +</span><span id="L-100"><a href="#L-100"><span class="linenos">100</span></a> <span class="c1"># Mapping of automatically joined column names to an ordered set of source names (dict).</span> +</span><span id="L-101"><a href="#L-101"><span class="linenos">101</span></a> <span class="n">column_tables</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">Any</span><span class="p">]]</span> <span class="o">=</span> <span class="p">{}</span> +</span><span id="L-102"><a href="#L-102"><span class="linenos">102</span></a> +</span><span id="L-103"><a href="#L-103"><span class="linenos">103</span></a> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">joins</span><span class="p">:</span> +</span><span id="L-104"><a href="#L-104"><span class="linenos">104</span></a> <span class="n">using</span> <span class="o">=</span> <span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"using"</span><span class="p">)</span> +</span><span id="L-105"><a href="#L-105"><span class="linenos">105</span></a> +</span><span id="L-106"><a href="#L-106"><span class="linenos">106</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">using</span><span class="p">:</span> +</span><span id="L-107"><a href="#L-107"><span class="linenos">107</span></a> <span class="k">continue</span> +</span><span id="L-108"><a href="#L-108"><span class="linenos">108</span></a> +</span><span id="L-109"><a href="#L-109"><span class="linenos">109</span></a> <span class="n">join_table</span> <span class="o">=</span> <span class="n">join</span><span class="o">.</span><span class="n">alias_or_name</span> +</span><span id="L-110"><a href="#L-110"><span class="linenos">110</span></a> +</span><span id="L-111"><a href="#L-111"><span class="linenos">111</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="p">{}</span> +</span><span id="L-112"><a href="#L-112"><span class="linenos">112</span></a> +</span><span id="L-113"><a href="#L-113"><span class="linenos">113</span></a> <span class="k">for</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">:</span> +</span><span id="L-114"><a href="#L-114"><span class="linenos">114</span></a> <span class="k">if</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">ordered</span><span class="p">:</span> +</span><span id="L-115"><a href="#L-115"><span class="linenos">115</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">k</span><span class="p">):</span> +</span><span id="L-116"><a href="#L-116"><span class="linenos">116</span></a> <span class="k">if</span> <span class="n">column</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span> +</span><span id="L-117"><a href="#L-117"><span class="linenos">117</span></a> <span class="n">columns</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">k</span> +</span><span id="L-118"><a href="#L-118"><span class="linenos">118</span></a> +</span><span id="L-119"><a href="#L-119"><span class="linenos">119</span></a> <span class="n">source_table</span> <span class="o">=</span> <span class="n">ordered</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span> +</span><span id="L-120"><a href="#L-120"><span class="linenos">120</span></a> <span class="n">ordered</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">join_table</span><span class="p">)</span> +</span><span id="L-121"><a href="#L-121"><span class="linenos">121</span></a> <span class="n">join_columns</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">join_table</span><span class="p">)</span> +</span><span id="L-122"><a href="#L-122"><span class="linenos">122</span></a> <span class="n">conditions</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="L-123"><a href="#L-123"><span class="linenos">123</span></a> +</span><span id="L-124"><a href="#L-124"><span class="linenos">124</span></a> <span class="k">for</span> <span class="n">identifier</span> <span class="ow">in</span> <span class="n">using</span><span class="p">:</span> +</span><span id="L-125"><a href="#L-125"><span class="linenos">125</span></a> <span class="n">identifier</span> <span class="o">=</span> <span class="n">identifier</span><span class="o">.</span><span class="n">name</span> +</span><span id="L-126"><a href="#L-126"><span class="linenos">126</span></a> <span class="n">table</span> <span class="o">=</span> <span class="n">columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">identifier</span><span class="p">)</span> +</span><span id="L-127"><a href="#L-127"><span class="linenos">127</span></a> +</span><span id="L-128"><a href="#L-128"><span class="linenos">128</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table</span> <span class="ow">or</span> <span class="n">identifier</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">join_columns</span><span class="p">:</span> +</span><span id="L-129"><a href="#L-129"><span class="linenos">129</span></a> <span class="k">if</span> <span class="n">columns</span> <span class="ow">and</span> <span class="n">join_columns</span><span class="p">:</span> +</span><span id="L-130"><a href="#L-130"><span class="linenos">130</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Cannot automatically join: </span><span class="si">{</span><span class="n">identifier</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="L-131"><a href="#L-131"><span class="linenos">131</span></a> +</span><span id="L-132"><a href="#L-132"><span class="linenos">132</span></a> <span class="n">table</span> <span class="o">=</span> <span class="n">table</span> <span class="ow">or</span> <span class="n">source_table</span> +</span><span id="L-133"><a href="#L-133"><span class="linenos">133</span></a> <span class="n">conditions</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> +</span><span id="L-134"><a href="#L-134"><span class="linenos">134</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">condition</span><span class="p">(</span> +</span><span id="L-135"><a href="#L-135"><span class="linenos">135</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">EQ</span><span class="p">(</span> +</span><span id="L-136"><a href="#L-136"><span class="linenos">136</span></a> <span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">identifier</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">table</span><span class="p">),</span> +</span><span id="L-137"><a href="#L-137"><span class="linenos">137</span></a> <span class="n">expression</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">identifier</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">join_table</span><span class="p">),</span> +</span><span id="L-138"><a href="#L-138"><span class="linenos">138</span></a> <span class="p">)</span> +</span><span id="L-139"><a href="#L-139"><span class="linenos">139</span></a> <span class="p">)</span> +</span><span id="L-140"><a href="#L-140"><span class="linenos">140</span></a> <span class="p">)</span> +</span><span id="L-141"><a href="#L-141"><span class="linenos">141</span></a> +</span><span id="L-142"><a href="#L-142"><span class="linenos">142</span></a> <span class="c1"># Set all values in the dict to None, because we only care about the key ordering</span> +</span><span id="L-143"><a href="#L-143"><span class="linenos">143</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="n">column_tables</span><span class="o">.</span><span class="n">setdefault</span><span class="p">(</span><span class="n">identifier</span><span class="p">,</span> <span class="p">{})</span> +</span><span id="L-144"><a href="#L-144"><span class="linenos">144</span></a> <span class="k">if</span> <span class="n">table</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> +</span><span id="L-145"><a href="#L-145"><span class="linenos">145</span></a> <span class="n">tables</span><span class="p">[</span><span class="n">table</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="L-146"><a href="#L-146"><span class="linenos">146</span></a> <span class="k">if</span> <span class="n">join_table</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> +</span><span id="L-147"><a href="#L-147"><span class="linenos">147</span></a> <span class="n">tables</span><span class="p">[</span><span class="n">join_table</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="L-148"><a href="#L-148"><span class="linenos">148</span></a> +</span><span id="L-149"><a href="#L-149"><span class="linenos">149</span></a> <span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="s2">"using"</span><span class="p">)</span> +</span><span id="L-150"><a href="#L-150"><span class="linenos">150</span></a> <span class="n">join</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"on"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span><span class="p">(</span><span class="o">*</span><span class="n">conditions</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">))</span> +</span><span id="L-151"><a href="#L-151"><span class="linenos">151</span></a> +</span><span id="L-152"><a href="#L-152"><span class="linenos">152</span></a> <span class="k">if</span> <span class="n">column_tables</span><span class="p">:</span> +</span><span id="L-153"><a href="#L-153"><span class="linenos">153</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">columns</span><span class="p">:</span> +</span><span id="L-154"><a href="#L-154"><span class="linenos">154</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">column</span><span class="o">.</span><span class="n">table</span> <span class="ow">and</span> <span class="n">column</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">column_tables</span><span class="p">:</span> +</span><span id="L-155"><a href="#L-155"><span class="linenos">155</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="n">column_tables</span><span class="p">[</span><span class="n">column</span><span class="o">.</span><span class="n">name</span><span class="p">]</span> +</span><span id="L-156"><a href="#L-156"><span class="linenos">156</span></a> <span class="n">coalesce</span> <span class="o">=</span> <span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">column</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">table</span><span class="p">)</span> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">]</span> +</span><span id="L-157"><a href="#L-157"><span class="linenos">157</span></a> <span class="n">replacement</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">Coalesce</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">coalesce</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">expressions</span><span class="o">=</span><span class="n">coalesce</span><span class="p">[</span><span class="mi">1</span><span class="p">:])</span> +</span><span id="L-158"><a href="#L-158"><span class="linenos">158</span></a> +</span><span id="L-159"><a href="#L-159"><span class="linenos">159</span></a> <span class="c1"># Ensure selects keep their output name</span> +</span><span id="L-160"><a href="#L-160"><span class="linenos">160</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">column</span><span class="o">.</span><span class="n">parent</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">):</span> +</span><span id="L-161"><a href="#L-161"><span class="linenos">161</span></a> <span class="n">replacement</span> <span class="o">=</span> <span class="n">alias</span><span class="p">(</span><span class="n">replacement</span><span class="p">,</span> <span class="n">alias</span><span class="o">=</span><span class="n">column</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> +</span><span id="L-162"><a href="#L-162"><span class="linenos">162</span></a> +</span><span id="L-163"><a href="#L-163"><span class="linenos">163</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="n">replacement</span><span class="p">)</span> +</span><span id="L-164"><a href="#L-164"><span class="linenos">164</span></a> +</span><span id="L-165"><a href="#L-165"><span class="linenos">165</span></a> <span class="k">return</span> <span class="n">column_tables</span> </span><span id="L-166"><a href="#L-166"><span class="linenos">166</span></a> -</span><span id="L-167"><a href="#L-167"><span class="linenos">167</span></a><span class="k">def</span> <span class="nf">_expand_alias_refs</span><span class="p">(</span><span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">:</span> <span class="n">Resolver</span><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> -</span><span id="L-168"><a href="#L-168"><span class="linenos">168</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span> -</span><span id="L-169"><a href="#L-169"><span class="linenos">169</span></a> -</span><span id="L-170"><a href="#L-170"><span class="linenos">170</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">):</span> -</span><span id="L-171"><a href="#L-171"><span class="linenos">171</span></a> <span class="k">return</span> -</span><span id="L-172"><a href="#L-172"><span class="linenos">172</span></a> -</span><span id="L-173"><a href="#L-173"><span class="linenos">173</span></a> <span class="n">alias_to_expression</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">Tuple</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">,</span> <span class="nb">int</span><span class="p">]]</span> <span class="o">=</span> <span class="p">{}</span> -</span><span id="L-174"><a href="#L-174"><span class="linenos">174</span></a> -</span><span id="L-175"><a href="#L-175"><span class="linenos">175</span></a> <span class="k">def</span> <span class="nf">replace_columns</span><span class="p">(</span> -</span><span id="L-176"><a href="#L-176"><span class="linenos">176</span></a> <span class="n">node</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">],</span> <span class="n">resolve_table</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">False</span><span class="p">,</span> <span class="n">literal_index</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">False</span> -</span><span id="L-177"><a href="#L-177"><span class="linenos">177</span></a> <span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> -</span><span id="L-178"><a href="#L-178"><span class="linenos">178</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">node</span><span class="p">:</span> -</span><span id="L-179"><a href="#L-179"><span class="linenos">179</span></a> <span class="k">return</span> -</span><span id="L-180"><a href="#L-180"><span class="linenos">180</span></a> -</span><span id="L-181"><a href="#L-181"><span class="linenos">181</span></a> <span class="k">for</span> <span class="n">column</span><span class="p">,</span> <span class="o">*</span><span class="n">_</span> <span class="ow">in</span> <span class="n">walk_in_scope</span><span class="p">(</span><span class="n">node</span><span class="p">):</span> -</span><span id="L-182"><a href="#L-182"><span class="linenos">182</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Column</span><span class="p">):</span> -</span><span id="L-183"><a href="#L-183"><span class="linenos">183</span></a> <span class="k">continue</span> -</span><span id="L-184"><a href="#L-184"><span class="linenos">184</span></a> <span class="n">table</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_table</span><span class="p">(</span><span class="n">column</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> <span class="k">if</span> <span class="n">resolve_table</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">column</span><span class="o">.</span><span class="n">table</span> <span class="k">else</span> <span class="kc">None</span> -</span><span id="L-185"><a href="#L-185"><span class="linenos">185</span></a> <span class="n">alias_expr</span><span class="p">,</span> <span class="n">i</span> <span class="o">=</span> <span class="n">alias_to_expression</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="p">(</span><span class="kc">None</span><span class="p">,</span> <span class="mi">1</span><span class="p">))</span> -</span><span id="L-186"><a href="#L-186"><span class="linenos">186</span></a> <span class="n">double_agg</span> <span class="o">=</span> <span class="p">(</span> -</span><span id="L-187"><a href="#L-187"><span class="linenos">187</span></a> <span class="p">(</span><span class="n">alias_expr</span><span class="o">.</span><span class="n">find</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">AggFunc</span><span class="p">)</span> <span class="ow">and</span> <span class="n">column</span><span class="o">.</span><span class="n">find_ancestor</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">AggFunc</span><span class="p">))</span> -</span><span id="L-188"><a href="#L-188"><span class="linenos">188</span></a> <span class="k">if</span> <span class="n">alias_expr</span> -</span><span id="L-189"><a href="#L-189"><span class="linenos">189</span></a> <span class="k">else</span> <span class="kc">False</span> -</span><span id="L-190"><a href="#L-190"><span class="linenos">190</span></a> <span class="p">)</span> -</span><span id="L-191"><a href="#L-191"><span class="linenos">191</span></a> -</span><span id="L-192"><a href="#L-192"><span class="linenos">192</span></a> <span class="k">if</span> <span class="n">table</span> <span class="ow">and</span> <span class="p">(</span><span class="ow">not</span> <span class="n">alias_expr</span> <span class="ow">or</span> <span class="n">double_agg</span><span class="p">):</span> -</span><span id="L-193"><a href="#L-193"><span class="linenos">193</span></a> <span class="n">column</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"table"</span><span class="p">,</span> <span class="n">table</span><span class="p">)</span> -</span><span id="L-194"><a href="#L-194"><span class="linenos">194</span></a> <span class="k">elif</span> <span class="ow">not</span> <span class="n">column</span><span class="o">.</span><span class="n">table</span> <span class="ow">and</span> <span class="n">alias_expr</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">double_agg</span><span class="p">:</span> -</span><span id="L-195"><a href="#L-195"><span class="linenos">195</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">alias_expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="p">)</span> <span class="ow">and</span> <span class="p">(</span><span class="n">literal_index</span> <span class="ow">or</span> <span class="n">resolve_table</span><span class="p">):</span> -</span><span id="L-196"><a href="#L-196"><span class="linenos">196</span></a> <span class="k">if</span> <span class="n">literal_index</span><span class="p">:</span> -</span><span id="L-197"><a href="#L-197"><span class="linenos">197</span></a> <span class="n">column</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="n">i</span><span class="p">))</span> -</span><span id="L-198"><a href="#L-198"><span class="linenos">198</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-199"><a href="#L-199"><span class="linenos">199</span></a> <span class="n">column</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">alias_expr</span><span class="o">.</span><span class="n">copy</span><span class="p">())</span> -</span><span id="L-200"><a href="#L-200"><span class="linenos">200</span></a> -</span><span id="L-201"><a href="#L-201"><span class="linenos">201</span></a> <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="n">projection</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">selects</span><span class="p">):</span> -</span><span id="L-202"><a href="#L-202"><span class="linenos">202</span></a> <span class="n">replace_columns</span><span class="p">(</span><span class="n">projection</span><span class="p">)</span> -</span><span id="L-203"><a href="#L-203"><span class="linenos">203</span></a> -</span><span id="L-204"><a href="#L-204"><span class="linenos">204</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">projection</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Alias</span><span class="p">):</span> -</span><span id="L-205"><a href="#L-205"><span class="linenos">205</span></a> <span class="n">alias_to_expression</span><span class="p">[</span><span class="n">projection</span><span class="o">.</span><span class="n">alias</span><span class="p">]</span> <span class="o">=</span> <span class="p">(</span><span class="n">projection</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">i</span> <span class="o">+</span> <span class="mi">1</span><span class="p">)</span> -</span><span id="L-206"><a href="#L-206"><span class="linenos">206</span></a> -</span><span id="L-207"><a href="#L-207"><span class="linenos">207</span></a> <span class="n">replace_columns</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"where"</span><span class="p">))</span> -</span><span id="L-208"><a href="#L-208"><span class="linenos">208</span></a> <span class="n">replace_columns</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"group"</span><span class="p">),</span> <span class="n">literal_index</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> -</span><span id="L-209"><a href="#L-209"><span class="linenos">209</span></a> <span class="n">replace_columns</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"having"</span><span class="p">),</span> <span class="n">resolve_table</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> -</span><span id="L-210"><a href="#L-210"><span class="linenos">210</span></a> <span class="n">replace_columns</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"qualify"</span><span class="p">),</span> <span class="n">resolve_table</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> -</span><span id="L-211"><a href="#L-211"><span class="linenos">211</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">clear_cache</span><span class="p">()</span> -</span><span id="L-212"><a href="#L-212"><span class="linenos">212</span></a> +</span><span id="L-167"><a href="#L-167"><span class="linenos">167</span></a> +</span><span id="L-168"><a href="#L-168"><span class="linenos">168</span></a><span class="k">def</span> <span class="nf">_expand_alias_refs</span><span class="p">(</span><span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">:</span> <span class="n">Resolver</span><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> +</span><span id="L-169"><a href="#L-169"><span class="linenos">169</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span> +</span><span id="L-170"><a href="#L-170"><span class="linenos">170</span></a> +</span><span id="L-171"><a href="#L-171"><span class="linenos">171</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">):</span> +</span><span id="L-172"><a href="#L-172"><span class="linenos">172</span></a> <span class="k">return</span> +</span><span id="L-173"><a href="#L-173"><span class="linenos">173</span></a> +</span><span id="L-174"><a href="#L-174"><span class="linenos">174</span></a> <span class="n">alias_to_expression</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">Tuple</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">,</span> <span class="nb">int</span><span class="p">]]</span> <span class="o">=</span> <span class="p">{}</span> +</span><span id="L-175"><a href="#L-175"><span class="linenos">175</span></a> +</span><span id="L-176"><a href="#L-176"><span class="linenos">176</span></a> <span class="k">def</span> <span class="nf">replace_columns</span><span class="p">(</span> +</span><span id="L-177"><a href="#L-177"><span class="linenos">177</span></a> <span class="n">node</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">],</span> <span class="n">resolve_table</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">False</span><span class="p">,</span> <span class="n">literal_index</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">False</span> +</span><span id="L-178"><a href="#L-178"><span class="linenos">178</span></a> <span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> +</span><span id="L-179"><a href="#L-179"><span class="linenos">179</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">node</span><span class="p">:</span> +</span><span id="L-180"><a href="#L-180"><span class="linenos">180</span></a> <span class="k">return</span> +</span><span id="L-181"><a href="#L-181"><span class="linenos">181</span></a> +</span><span id="L-182"><a href="#L-182"><span class="linenos">182</span></a> <span class="k">for</span> <span class="n">column</span><span class="p">,</span> <span class="o">*</span><span class="n">_</span> <span class="ow">in</span> <span class="n">walk_in_scope</span><span class="p">(</span><span class="n">node</span><span class="p">):</span> +</span><span id="L-183"><a href="#L-183"><span class="linenos">183</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Column</span><span class="p">):</span> +</span><span id="L-184"><a href="#L-184"><span class="linenos">184</span></a> <span class="k">continue</span> +</span><span id="L-185"><a href="#L-185"><span class="linenos">185</span></a> <span class="n">table</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_table</span><span class="p">(</span><span class="n">column</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> <span class="k">if</span> <span class="n">resolve_table</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">column</span><span class="o">.</span><span class="n">table</span> <span class="k">else</span> <span class="kc">None</span> +</span><span id="L-186"><a href="#L-186"><span class="linenos">186</span></a> <span class="n">alias_expr</span><span class="p">,</span> <span class="n">i</span> <span class="o">=</span> <span class="n">alias_to_expression</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="p">(</span><span class="kc">None</span><span class="p">,</span> <span class="mi">1</span><span class="p">))</span> +</span><span id="L-187"><a href="#L-187"><span class="linenos">187</span></a> <span class="n">double_agg</span> <span class="o">=</span> <span class="p">(</span> +</span><span id="L-188"><a href="#L-188"><span class="linenos">188</span></a> <span class="p">(</span><span class="n">alias_expr</span><span class="o">.</span><span class="n">find</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">AggFunc</span><span class="p">)</span> <span class="ow">and</span> <span class="n">column</span><span class="o">.</span><span class="n">find_ancestor</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">AggFunc</span><span class="p">))</span> +</span><span id="L-189"><a href="#L-189"><span class="linenos">189</span></a> <span class="k">if</span> <span class="n">alias_expr</span> +</span><span id="L-190"><a href="#L-190"><span class="linenos">190</span></a> <span class="k">else</span> <span class="kc">False</span> +</span><span id="L-191"><a href="#L-191"><span class="linenos">191</span></a> <span class="p">)</span> +</span><span id="L-192"><a href="#L-192"><span class="linenos">192</span></a> +</span><span id="L-193"><a href="#L-193"><span class="linenos">193</span></a> <span class="k">if</span> <span class="n">table</span> <span class="ow">and</span> <span class="p">(</span><span class="ow">not</span> <span class="n">alias_expr</span> <span class="ow">or</span> <span class="n">double_agg</span><span class="p">):</span> +</span><span id="L-194"><a href="#L-194"><span class="linenos">194</span></a> <span class="n">column</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"table"</span><span class="p">,</span> <span class="n">table</span><span class="p">)</span> +</span><span id="L-195"><a href="#L-195"><span class="linenos">195</span></a> <span class="k">elif</span> <span class="ow">not</span> <span class="n">column</span><span class="o">.</span><span class="n">table</span> <span class="ow">and</span> <span class="n">alias_expr</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">double_agg</span><span class="p">:</span> +</span><span id="L-196"><a href="#L-196"><span class="linenos">196</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">alias_expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="p">)</span> <span class="ow">and</span> <span class="p">(</span><span class="n">literal_index</span> <span class="ow">or</span> <span class="n">resolve_table</span><span class="p">):</span> +</span><span id="L-197"><a href="#L-197"><span class="linenos">197</span></a> <span class="k">if</span> <span class="n">literal_index</span><span class="p">:</span> +</span><span id="L-198"><a href="#L-198"><span class="linenos">198</span></a> <span class="n">column</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="n">i</span><span class="p">))</span> +</span><span id="L-199"><a href="#L-199"><span class="linenos">199</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-200"><a href="#L-200"><span class="linenos">200</span></a> <span class="n">column</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">alias_expr</span><span class="o">.</span><span class="n">copy</span><span class="p">())</span> +</span><span id="L-201"><a href="#L-201"><span class="linenos">201</span></a> +</span><span id="L-202"><a href="#L-202"><span class="linenos">202</span></a> <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="n">projection</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">selects</span><span class="p">):</span> +</span><span id="L-203"><a href="#L-203"><span class="linenos">203</span></a> <span class="n">replace_columns</span><span class="p">(</span><span class="n">projection</span><span class="p">)</span> +</span><span id="L-204"><a href="#L-204"><span class="linenos">204</span></a> +</span><span id="L-205"><a href="#L-205"><span class="linenos">205</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">projection</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Alias</span><span class="p">):</span> +</span><span id="L-206"><a href="#L-206"><span class="linenos">206</span></a> <span class="n">alias_to_expression</span><span class="p">[</span><span class="n">projection</span><span class="o">.</span><span class="n">alias</span><span class="p">]</span> <span class="o">=</span> <span class="p">(</span><span class="n">projection</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">i</span> <span class="o">+</span> <span class="mi">1</span><span class="p">)</span> +</span><span id="L-207"><a href="#L-207"><span class="linenos">207</span></a> +</span><span id="L-208"><a href="#L-208"><span class="linenos">208</span></a> <span class="n">replace_columns</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"where"</span><span class="p">))</span> +</span><span id="L-209"><a href="#L-209"><span class="linenos">209</span></a> <span class="n">replace_columns</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"group"</span><span class="p">),</span> <span class="n">literal_index</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> +</span><span id="L-210"><a href="#L-210"><span class="linenos">210</span></a> <span class="n">replace_columns</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"having"</span><span class="p">),</span> <span class="n">resolve_table</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> +</span><span id="L-211"><a href="#L-211"><span class="linenos">211</span></a> <span class="n">replace_columns</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"qualify"</span><span class="p">),</span> <span class="n">resolve_table</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> +</span><span id="L-212"><a href="#L-212"><span class="linenos">212</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">clear_cache</span><span class="p">()</span> </span><span id="L-213"><a href="#L-213"><span class="linenos">213</span></a> -</span><span id="L-214"><a href="#L-214"><span class="linenos">214</span></a><span class="k">def</span> <span class="nf">_expand_group_by</span><span class="p">(</span><span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">):</span> -</span><span id="L-215"><a href="#L-215"><span class="linenos">215</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span> -</span><span id="L-216"><a href="#L-216"><span class="linenos">216</span></a> <span class="n">group</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"group"</span><span class="p">)</span> -</span><span id="L-217"><a href="#L-217"><span class="linenos">217</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">group</span><span class="p">:</span> -</span><span id="L-218"><a href="#L-218"><span class="linenos">218</span></a> <span class="k">return</span> -</span><span id="L-219"><a href="#L-219"><span class="linenos">219</span></a> -</span><span id="L-220"><a href="#L-220"><span class="linenos">220</span></a> <span class="n">group</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"expressions"</span><span class="p">,</span> <span class="n">_expand_positional_references</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">group</span><span class="o">.</span><span class="n">expressions</span><span class="p">))</span> -</span><span id="L-221"><a href="#L-221"><span class="linenos">221</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"group"</span><span class="p">,</span> <span class="n">group</span><span class="p">)</span> -</span><span id="L-222"><a href="#L-222"><span class="linenos">222</span></a> +</span><span id="L-214"><a href="#L-214"><span class="linenos">214</span></a> +</span><span id="L-215"><a href="#L-215"><span class="linenos">215</span></a><span class="k">def</span> <span class="nf">_expand_group_by</span><span class="p">(</span><span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">):</span> +</span><span id="L-216"><a href="#L-216"><span class="linenos">216</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span> +</span><span id="L-217"><a href="#L-217"><span class="linenos">217</span></a> <span class="n">group</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"group"</span><span class="p">)</span> +</span><span id="L-218"><a href="#L-218"><span class="linenos">218</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">group</span><span class="p">:</span> +</span><span id="L-219"><a href="#L-219"><span class="linenos">219</span></a> <span class="k">return</span> +</span><span id="L-220"><a href="#L-220"><span class="linenos">220</span></a> +</span><span id="L-221"><a href="#L-221"><span class="linenos">221</span></a> <span class="n">group</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"expressions"</span><span class="p">,</span> <span class="n">_expand_positional_references</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">group</span><span class="o">.</span><span class="n">expressions</span><span class="p">))</span> +</span><span id="L-222"><a href="#L-222"><span class="linenos">222</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"group"</span><span class="p">,</span> <span class="n">group</span><span class="p">)</span> </span><span id="L-223"><a href="#L-223"><span class="linenos">223</span></a> -</span><span id="L-224"><a href="#L-224"><span class="linenos">224</span></a><span class="k">def</span> <span class="nf">_expand_order_by</span><span class="p">(</span><span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">:</span> <span class="n">Resolver</span><span class="p">):</span> -</span><span id="L-225"><a href="#L-225"><span class="linenos">225</span></a> <span class="n">order</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"order"</span><span class="p">)</span> -</span><span id="L-226"><a href="#L-226"><span class="linenos">226</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">order</span><span class="p">:</span> -</span><span id="L-227"><a href="#L-227"><span class="linenos">227</span></a> <span class="k">return</span> -</span><span id="L-228"><a href="#L-228"><span class="linenos">228</span></a> -</span><span id="L-229"><a href="#L-229"><span class="linenos">229</span></a> <span class="n">ordereds</span> <span class="o">=</span> <span class="n">order</span><span class="o">.</span><span class="n">expressions</span> -</span><span id="L-230"><a href="#L-230"><span class="linenos">230</span></a> <span class="k">for</span> <span class="n">ordered</span><span class="p">,</span> <span class="n">new_expression</span> <span class="ow">in</span> <span class="nb">zip</span><span class="p">(</span> -</span><span id="L-231"><a href="#L-231"><span class="linenos">231</span></a> <span class="n">ordereds</span><span class="p">,</span> -</span><span id="L-232"><a href="#L-232"><span class="linenos">232</span></a> <span class="n">_expand_positional_references</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="p">(</span><span class="n">o</span><span class="o">.</span><span class="n">this</span> <span class="k">for</span> <span class="n">o</span> <span class="ow">in</span> <span class="n">ordereds</span><span class="p">)),</span> -</span><span id="L-233"><a href="#L-233"><span class="linenos">233</span></a> <span class="p">):</span> -</span><span id="L-234"><a href="#L-234"><span class="linenos">234</span></a> <span class="k">for</span> <span class="n">agg</span> <span class="ow">in</span> <span class="n">ordered</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">AggFunc</span><span class="p">):</span> -</span><span id="L-235"><a href="#L-235"><span class="linenos">235</span></a> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="n">agg</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Column</span><span class="p">):</span> -</span><span id="L-236"><a href="#L-236"><span class="linenos">236</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">col</span><span class="o">.</span><span class="n">table</span><span class="p">:</span> -</span><span id="L-237"><a href="#L-237"><span class="linenos">237</span></a> <span class="n">col</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"table"</span><span class="p">,</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_table</span><span class="p">(</span><span class="n">col</span><span class="o">.</span><span class="n">name</span><span class="p">))</span> -</span><span id="L-238"><a href="#L-238"><span class="linenos">238</span></a> -</span><span id="L-239"><a href="#L-239"><span class="linenos">239</span></a> <span class="n">ordered</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"this"</span><span class="p">,</span> <span class="n">new_expression</span><span class="p">)</span> -</span><span id="L-240"><a href="#L-240"><span class="linenos">240</span></a> -</span><span id="L-241"><a href="#L-241"><span class="linenos">241</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"group"</span><span class="p">):</span> -</span><span id="L-242"><a href="#L-242"><span class="linenos">242</span></a> <span class="n">selects</span> <span class="o">=</span> <span class="p">{</span><span class="n">s</span><span class="o">.</span><span class="n">this</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">s</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">)</span> <span class="k">for</span> <span class="n">s</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">selects</span><span class="p">}</span> -</span><span id="L-243"><a href="#L-243"><span class="linenos">243</span></a> -</span><span id="L-244"><a href="#L-244"><span class="linenos">244</span></a> <span class="k">for</span> <span class="n">ordered</span> <span class="ow">in</span> <span class="n">ordereds</span><span class="p">:</span> -</span><span id="L-245"><a href="#L-245"><span class="linenos">245</span></a> <span class="n">ordered</span> <span class="o">=</span> <span class="n">ordered</span><span class="o">.</span><span class="n">this</span> -</span><span id="L-246"><a href="#L-246"><span class="linenos">246</span></a> -</span><span id="L-247"><a href="#L-247"><span class="linenos">247</span></a> <span class="n">ordered</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span> -</span><span id="L-248"><a href="#L-248"><span class="linenos">248</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">_select_by_pos</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">ordered</span><span class="p">)</span><span class="o">.</span><span class="n">alias</span><span class="p">)</span> -</span><span id="L-249"><a href="#L-249"><span class="linenos">249</span></a> <span class="k">if</span> <span class="n">ordered</span><span class="o">.</span><span class="n">is_int</span> -</span><span id="L-250"><a href="#L-250"><span class="linenos">250</span></a> <span class="k">else</span> <span class="n">selects</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">ordered</span><span class="p">,</span> <span class="n">ordered</span><span class="p">)</span> -</span><span id="L-251"><a href="#L-251"><span class="linenos">251</span></a> <span class="p">)</span> -</span><span id="L-252"><a href="#L-252"><span class="linenos">252</span></a> +</span><span id="L-224"><a href="#L-224"><span class="linenos">224</span></a> +</span><span id="L-225"><a href="#L-225"><span class="linenos">225</span></a><span class="k">def</span> <span class="nf">_expand_order_by</span><span class="p">(</span><span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">:</span> <span class="n">Resolver</span><span class="p">):</span> +</span><span id="L-226"><a href="#L-226"><span class="linenos">226</span></a> <span class="n">order</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"order"</span><span class="p">)</span> +</span><span id="L-227"><a href="#L-227"><span class="linenos">227</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">order</span><span class="p">:</span> +</span><span id="L-228"><a href="#L-228"><span class="linenos">228</span></a> <span class="k">return</span> +</span><span id="L-229"><a href="#L-229"><span class="linenos">229</span></a> +</span><span id="L-230"><a href="#L-230"><span class="linenos">230</span></a> <span class="n">ordereds</span> <span class="o">=</span> <span class="n">order</span><span class="o">.</span><span class="n">expressions</span> +</span><span id="L-231"><a href="#L-231"><span class="linenos">231</span></a> <span class="k">for</span> <span class="n">ordered</span><span class="p">,</span> <span class="n">new_expression</span> <span class="ow">in</span> <span class="nb">zip</span><span class="p">(</span> +</span><span id="L-232"><a href="#L-232"><span class="linenos">232</span></a> <span class="n">ordereds</span><span class="p">,</span> +</span><span id="L-233"><a href="#L-233"><span class="linenos">233</span></a> <span class="n">_expand_positional_references</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="p">(</span><span class="n">o</span><span class="o">.</span><span class="n">this</span> <span class="k">for</span> <span class="n">o</span> <span class="ow">in</span> <span class="n">ordereds</span><span class="p">)),</span> +</span><span id="L-234"><a href="#L-234"><span class="linenos">234</span></a> <span class="p">):</span> +</span><span id="L-235"><a href="#L-235"><span class="linenos">235</span></a> <span class="k">for</span> <span class="n">agg</span> <span class="ow">in</span> <span class="n">ordered</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">AggFunc</span><span class="p">):</span> +</span><span id="L-236"><a href="#L-236"><span class="linenos">236</span></a> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="n">agg</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Column</span><span class="p">):</span> +</span><span id="L-237"><a href="#L-237"><span class="linenos">237</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">col</span><span class="o">.</span><span class="n">table</span><span class="p">:</span> +</span><span id="L-238"><a href="#L-238"><span class="linenos">238</span></a> <span class="n">col</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"table"</span><span class="p">,</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_table</span><span class="p">(</span><span class="n">col</span><span class="o">.</span><span class="n">name</span><span class="p">))</span> +</span><span id="L-239"><a href="#L-239"><span class="linenos">239</span></a> +</span><span id="L-240"><a href="#L-240"><span class="linenos">240</span></a> <span class="n">ordered</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"this"</span><span class="p">,</span> <span class="n">new_expression</span><span class="p">)</span> +</span><span id="L-241"><a href="#L-241"><span class="linenos">241</span></a> +</span><span id="L-242"><a href="#L-242"><span class="linenos">242</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"group"</span><span class="p">):</span> +</span><span id="L-243"><a href="#L-243"><span class="linenos">243</span></a> <span class="n">selects</span> <span class="o">=</span> <span class="p">{</span><span class="n">s</span><span class="o">.</span><span class="n">this</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">s</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">)</span> <span class="k">for</span> <span class="n">s</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">selects</span><span class="p">}</span> +</span><span id="L-244"><a href="#L-244"><span class="linenos">244</span></a> +</span><span id="L-245"><a href="#L-245"><span class="linenos">245</span></a> <span class="k">for</span> <span class="n">ordered</span> <span class="ow">in</span> <span class="n">ordereds</span><span class="p">:</span> +</span><span id="L-246"><a href="#L-246"><span class="linenos">246</span></a> <span class="n">ordered</span> <span class="o">=</span> <span class="n">ordered</span><span class="o">.</span><span class="n">this</span> +</span><span id="L-247"><a href="#L-247"><span class="linenos">247</span></a> +</span><span id="L-248"><a href="#L-248"><span class="linenos">248</span></a> <span class="n">ordered</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span> +</span><span id="L-249"><a href="#L-249"><span class="linenos">249</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">_select_by_pos</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">ordered</span><span class="p">)</span><span class="o">.</span><span class="n">alias</span><span class="p">)</span> +</span><span id="L-250"><a href="#L-250"><span class="linenos">250</span></a> <span class="k">if</span> <span class="n">ordered</span><span class="o">.</span><span class="n">is_int</span> +</span><span id="L-251"><a href="#L-251"><span class="linenos">251</span></a> <span class="k">else</span> <span class="n">selects</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">ordered</span><span class="p">,</span> <span class="n">ordered</span><span class="p">)</span> +</span><span id="L-252"><a href="#L-252"><span class="linenos">252</span></a> <span class="p">)</span> </span><span id="L-253"><a href="#L-253"><span class="linenos">253</span></a> -</span><span id="L-254"><a href="#L-254"><span class="linenos">254</span></a><span class="k">def</span> <span class="nf">_expand_positional_references</span><span class="p">(</span><span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">expressions</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Iterable</span><span class="p">[</span><span class="n">E</span><span class="p">])</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="n">E</span><span class="p">]:</span> -</span><span id="L-255"><a href="#L-255"><span class="linenos">255</span></a> <span class="n">new_nodes</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="L-256"><a href="#L-256"><span class="linenos">256</span></a> <span class="k">for</span> <span class="n">node</span> <span class="ow">in</span> <span class="n">expressions</span><span class="p">:</span> -</span><span id="L-257"><a href="#L-257"><span class="linenos">257</span></a> <span class="k">if</span> <span class="n">node</span><span class="o">.</span><span class="n">is_int</span><span class="p">:</span> -</span><span id="L-258"><a href="#L-258"><span class="linenos">258</span></a> <span class="n">select</span> <span class="o">=</span> <span class="n">_select_by_pos</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">cast</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="p">,</span> <span class="n">node</span><span class="p">))</span><span class="o">.</span><span class="n">this</span> -</span><span id="L-259"><a href="#L-259"><span class="linenos">259</span></a> -</span><span id="L-260"><a href="#L-260"><span class="linenos">260</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">select</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="p">):</span> -</span><span id="L-261"><a href="#L-261"><span class="linenos">261</span></a> <span class="n">new_nodes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> -</span><span id="L-262"><a href="#L-262"><span class="linenos">262</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-263"><a href="#L-263"><span class="linenos">263</span></a> <span class="n">new_nodes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">select</span><span class="o">.</span><span class="n">copy</span><span class="p">())</span> -</span><span id="L-264"><a href="#L-264"><span class="linenos">264</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">clear_cache</span><span class="p">()</span> -</span><span id="L-265"><a href="#L-265"><span class="linenos">265</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-266"><a href="#L-266"><span class="linenos">266</span></a> <span class="n">new_nodes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> -</span><span id="L-267"><a href="#L-267"><span class="linenos">267</span></a> -</span><span id="L-268"><a href="#L-268"><span class="linenos">268</span></a> <span class="k">return</span> <span class="n">new_nodes</span> -</span><span id="L-269"><a href="#L-269"><span class="linenos">269</span></a> +</span><span id="L-254"><a href="#L-254"><span class="linenos">254</span></a> +</span><span id="L-255"><a href="#L-255"><span class="linenos">255</span></a><span class="k">def</span> <span class="nf">_expand_positional_references</span><span class="p">(</span><span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">expressions</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Iterable</span><span class="p">[</span><span class="n">E</span><span class="p">])</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="n">E</span><span class="p">]:</span> +</span><span id="L-256"><a href="#L-256"><span class="linenos">256</span></a> <span class="n">new_nodes</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="L-257"><a href="#L-257"><span class="linenos">257</span></a> <span class="k">for</span> <span class="n">node</span> <span class="ow">in</span> <span class="n">expressions</span><span class="p">:</span> +</span><span id="L-258"><a href="#L-258"><span class="linenos">258</span></a> <span class="k">if</span> <span class="n">node</span><span class="o">.</span><span class="n">is_int</span><span class="p">:</span> +</span><span id="L-259"><a href="#L-259"><span class="linenos">259</span></a> <span class="n">select</span> <span class="o">=</span> <span class="n">_select_by_pos</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">cast</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="p">,</span> <span class="n">node</span><span class="p">))</span><span class="o">.</span><span class="n">this</span> +</span><span id="L-260"><a href="#L-260"><span class="linenos">260</span></a> +</span><span id="L-261"><a href="#L-261"><span class="linenos">261</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">select</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="p">):</span> +</span><span id="L-262"><a href="#L-262"><span class="linenos">262</span></a> <span class="n">new_nodes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="L-263"><a href="#L-263"><span class="linenos">263</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-264"><a href="#L-264"><span class="linenos">264</span></a> <span class="n">new_nodes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">select</span><span class="o">.</span><span class="n">copy</span><span class="p">())</span> +</span><span id="L-265"><a href="#L-265"><span class="linenos">265</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">clear_cache</span><span class="p">()</span> +</span><span id="L-266"><a href="#L-266"><span class="linenos">266</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-267"><a href="#L-267"><span class="linenos">267</span></a> <span class="n">new_nodes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="L-268"><a href="#L-268"><span class="linenos">268</span></a> +</span><span id="L-269"><a href="#L-269"><span class="linenos">269</span></a> <span class="k">return</span> <span class="n">new_nodes</span> </span><span id="L-270"><a href="#L-270"><span class="linenos">270</span></a> -</span><span id="L-271"><a href="#L-271"><span class="linenos">271</span></a><span class="k">def</span> <span class="nf">_select_by_pos</span><span class="p">(</span><span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">node</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="p">)</span> <span class="o">-></span> <span class="n">exp</span><span class="o">.</span><span class="n">Alias</span><span class="p">:</span> -</span><span id="L-272"><a href="#L-272"><span class="linenos">272</span></a> <span class="k">try</span><span class="p">:</span> -</span><span id="L-273"><a href="#L-273"><span class="linenos">273</span></a> <span class="k">return</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">selects</span><span class="p">[</span><span class="nb">int</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span><span class="o">.</span><span class="n">assert_is</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Alias</span><span class="p">)</span> -</span><span id="L-274"><a href="#L-274"><span class="linenos">274</span></a> <span class="k">except</span> <span class="ne">IndexError</span><span class="p">:</span> -</span><span id="L-275"><a href="#L-275"><span class="linenos">275</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown output column: </span><span class="si">{</span><span class="n">node</span><span class="o">.</span><span class="n">name</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> -</span><span id="L-276"><a href="#L-276"><span class="linenos">276</span></a> +</span><span id="L-271"><a href="#L-271"><span class="linenos">271</span></a> +</span><span id="L-272"><a href="#L-272"><span class="linenos">272</span></a><span class="k">def</span> <span class="nf">_select_by_pos</span><span class="p">(</span><span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">node</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="p">)</span> <span class="o">-></span> <span class="n">exp</span><span class="o">.</span><span class="n">Alias</span><span class="p">:</span> +</span><span id="L-273"><a href="#L-273"><span class="linenos">273</span></a> <span class="k">try</span><span class="p">:</span> +</span><span id="L-274"><a href="#L-274"><span class="linenos">274</span></a> <span class="k">return</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">selects</span><span class="p">[</span><span class="nb">int</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span><span class="o">.</span><span class="n">assert_is</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Alias</span><span class="p">)</span> +</span><span id="L-275"><a href="#L-275"><span class="linenos">275</span></a> <span class="k">except</span> <span class="ne">IndexError</span><span class="p">:</span> +</span><span id="L-276"><a href="#L-276"><span class="linenos">276</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown output column: </span><span class="si">{</span><span class="n">node</span><span class="o">.</span><span class="n">name</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> </span><span id="L-277"><a href="#L-277"><span class="linenos">277</span></a> -</span><span id="L-278"><a href="#L-278"><span class="linenos">278</span></a><span class="k">def</span> <span class="nf">_qualify_columns</span><span class="p">(</span><span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">:</span> <span class="n">Resolver</span><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> -</span><span id="L-279"><a href="#L-279"><span class="linenos">279</span></a><span class="w"> </span><span class="sd">"""Disambiguate columns, ensuring each column specifies a source"""</span> -</span><span id="L-280"><a href="#L-280"><span class="linenos">280</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">columns</span><span class="p">:</span> -</span><span id="L-281"><a href="#L-281"><span class="linenos">281</span></a> <span class="n">column_table</span> <span class="o">=</span> <span class="n">column</span><span class="o">.</span><span class="n">table</span> -</span><span id="L-282"><a href="#L-282"><span class="linenos">282</span></a> <span class="n">column_name</span> <span class="o">=</span> <span class="n">column</span><span class="o">.</span><span class="n">name</span> -</span><span id="L-283"><a href="#L-283"><span class="linenos">283</span></a> -</span><span id="L-284"><a href="#L-284"><span class="linenos">284</span></a> <span class="k">if</span> <span class="n">column_table</span> <span class="ow">and</span> <span class="n">column_table</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> -</span><span id="L-285"><a href="#L-285"><span class="linenos">285</span></a> <span class="n">source_columns</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">column_table</span><span class="p">)</span> -</span><span id="L-286"><a href="#L-286"><span class="linenos">286</span></a> <span class="k">if</span> <span class="n">source_columns</span> <span class="ow">and</span> <span class="n">column_name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">source_columns</span> <span class="ow">and</span> <span class="s2">"*"</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">source_columns</span><span class="p">:</span> -</span><span id="L-287"><a href="#L-287"><span class="linenos">287</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown column: </span><span class="si">{</span><span class="n">column_name</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> -</span><span id="L-288"><a href="#L-288"><span class="linenos">288</span></a> -</span><span id="L-289"><a href="#L-289"><span class="linenos">289</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">column_table</span><span class="p">:</span> -</span><span id="L-290"><a href="#L-290"><span class="linenos">290</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">pivots</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">column</span><span class="o">.</span><span class="n">find_ancestor</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Pivot</span><span class="p">):</span> -</span><span id="L-291"><a href="#L-291"><span class="linenos">291</span></a> <span class="c1"># If the column is under the Pivot expression, we need to qualify it</span> -</span><span id="L-292"><a href="#L-292"><span class="linenos">292</span></a> <span class="c1"># using the name of the pivoted source instead of the pivot's alias</span> -</span><span id="L-293"><a href="#L-293"><span class="linenos">293</span></a> <span class="n">column</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"table"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">alias</span><span class="p">))</span> -</span><span id="L-294"><a href="#L-294"><span class="linenos">294</span></a> <span class="k">continue</span> -</span><span id="L-295"><a href="#L-295"><span class="linenos">295</span></a> -</span><span id="L-296"><a href="#L-296"><span class="linenos">296</span></a> <span class="n">column_table</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_table</span><span class="p">(</span><span class="n">column_name</span><span class="p">)</span> -</span><span id="L-297"><a href="#L-297"><span class="linenos">297</span></a> -</span><span id="L-298"><a href="#L-298"><span class="linenos">298</span></a> <span class="c1"># column_table can be a '' because bigquery unnest has no table alias</span> -</span><span id="L-299"><a href="#L-299"><span class="linenos">299</span></a> <span class="k">if</span> <span class="n">column_table</span><span class="p">:</span> -</span><span id="L-300"><a href="#L-300"><span class="linenos">300</span></a> <span class="n">column</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"table"</span><span class="p">,</span> <span class="n">column_table</span><span class="p">)</span> -</span><span id="L-301"><a href="#L-301"><span class="linenos">301</span></a> <span class="k">elif</span> <span class="n">column_table</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span> <span class="ow">and</span> <span class="p">(</span> -</span><span id="L-302"><a href="#L-302"><span class="linenos">302</span></a> <span class="ow">not</span> <span class="n">scope</span><span class="o">.</span><span class="n">parent</span> <span class="ow">or</span> <span class="n">column_table</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">parent</span><span class="o">.</span><span class="n">sources</span> -</span><span id="L-303"><a href="#L-303"><span class="linenos">303</span></a> <span class="p">):</span> -</span><span id="L-304"><a href="#L-304"><span class="linenos">304</span></a> <span class="c1"># structs are used like tables (e.g. "struct"."field"), so they need to be qualified</span> -</span><span id="L-305"><a href="#L-305"><span class="linenos">305</span></a> <span class="c1"># separately and represented as dot(dot(...(<table>.<column>, field1), field2, ...))</span> -</span><span id="L-306"><a href="#L-306"><span class="linenos">306</span></a> -</span><span id="L-307"><a href="#L-307"><span class="linenos">307</span></a> <span class="n">root</span><span class="p">,</span> <span class="o">*</span><span class="n">parts</span> <span class="o">=</span> <span class="n">column</span><span class="o">.</span><span class="n">parts</span> -</span><span id="L-308"><a href="#L-308"><span class="linenos">308</span></a> -</span><span id="L-309"><a href="#L-309"><span class="linenos">309</span></a> <span class="k">if</span> <span class="n">root</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> -</span><span id="L-310"><a href="#L-310"><span class="linenos">310</span></a> <span class="c1"># struct is already qualified, but we still need to change the AST representation</span> -</span><span id="L-311"><a href="#L-311"><span class="linenos">311</span></a> <span class="n">column_table</span> <span class="o">=</span> <span class="n">root</span> -</span><span id="L-312"><a href="#L-312"><span class="linenos">312</span></a> <span class="n">root</span><span class="p">,</span> <span class="o">*</span><span class="n">parts</span> <span class="o">=</span> <span class="n">parts</span> -</span><span id="L-313"><a href="#L-313"><span class="linenos">313</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-314"><a href="#L-314"><span class="linenos">314</span></a> <span class="n">column_table</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_table</span><span class="p">(</span><span class="n">root</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> -</span><span id="L-315"><a href="#L-315"><span class="linenos">315</span></a> -</span><span id="L-316"><a href="#L-316"><span class="linenos">316</span></a> <span class="k">if</span> <span class="n">column_table</span><span class="p">:</span> -</span><span id="L-317"><a href="#L-317"><span class="linenos">317</span></a> <span class="n">column</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Dot</span><span class="o">.</span><span class="n">build</span><span class="p">([</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">root</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">column_table</span><span class="p">),</span> <span class="o">*</span><span class="n">parts</span><span class="p">]))</span> -</span><span id="L-318"><a href="#L-318"><span class="linenos">318</span></a> -</span><span id="L-319"><a href="#L-319"><span class="linenos">319</span></a> <span class="k">for</span> <span class="n">pivot</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">pivots</span><span class="p">:</span> -</span><span id="L-320"><a href="#L-320"><span class="linenos">320</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">pivot</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Column</span><span class="p">):</span> -</span><span id="L-321"><a href="#L-321"><span class="linenos">321</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">column</span><span class="o">.</span><span class="n">table</span> <span class="ow">and</span> <span class="n">column</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">resolver</span><span class="o">.</span><span class="n">all_columns</span><span class="p">:</span> -</span><span id="L-322"><a href="#L-322"><span class="linenos">322</span></a> <span class="n">column_table</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_table</span><span class="p">(</span><span class="n">column</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> -</span><span id="L-323"><a href="#L-323"><span class="linenos">323</span></a> <span class="k">if</span> <span class="n">column_table</span><span class="p">:</span> -</span><span id="L-324"><a href="#L-324"><span class="linenos">324</span></a> <span class="n">column</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"table"</span><span class="p">,</span> <span class="n">column_table</span><span class="p">)</span> -</span><span id="L-325"><a href="#L-325"><span class="linenos">325</span></a> +</span><span id="L-278"><a href="#L-278"><span class="linenos">278</span></a> +</span><span id="L-279"><a href="#L-279"><span class="linenos">279</span></a><span class="k">def</span> <span class="nf">_qualify_columns</span><span class="p">(</span><span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">:</span> <span class="n">Resolver</span><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> +</span><span id="L-280"><a href="#L-280"><span class="linenos">280</span></a><span class="w"> </span><span class="sd">"""Disambiguate columns, ensuring each column specifies a source"""</span> +</span><span id="L-281"><a href="#L-281"><span class="linenos">281</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">columns</span><span class="p">:</span> +</span><span id="L-282"><a href="#L-282"><span class="linenos">282</span></a> <span class="n">column_table</span> <span class="o">=</span> <span class="n">column</span><span class="o">.</span><span class="n">table</span> +</span><span id="L-283"><a href="#L-283"><span class="linenos">283</span></a> <span class="n">column_name</span> <span class="o">=</span> <span class="n">column</span><span class="o">.</span><span class="n">name</span> +</span><span id="L-284"><a href="#L-284"><span class="linenos">284</span></a> +</span><span id="L-285"><a href="#L-285"><span class="linenos">285</span></a> <span class="k">if</span> <span class="n">column_table</span> <span class="ow">and</span> <span class="n">column_table</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> +</span><span id="L-286"><a href="#L-286"><span class="linenos">286</span></a> <span class="n">source_columns</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">column_table</span><span class="p">)</span> +</span><span id="L-287"><a href="#L-287"><span class="linenos">287</span></a> <span class="k">if</span> <span class="n">source_columns</span> <span class="ow">and</span> <span class="n">column_name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">source_columns</span> <span class="ow">and</span> <span class="s2">"*"</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">source_columns</span><span class="p">:</span> +</span><span id="L-288"><a href="#L-288"><span class="linenos">288</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown column: </span><span class="si">{</span><span class="n">column_name</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="L-289"><a href="#L-289"><span class="linenos">289</span></a> +</span><span id="L-290"><a href="#L-290"><span class="linenos">290</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">column_table</span><span class="p">:</span> +</span><span id="L-291"><a href="#L-291"><span class="linenos">291</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">pivots</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">column</span><span class="o">.</span><span class="n">find_ancestor</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Pivot</span><span class="p">):</span> +</span><span id="L-292"><a href="#L-292"><span class="linenos">292</span></a> <span class="c1"># If the column is under the Pivot expression, we need to qualify it</span> +</span><span id="L-293"><a href="#L-293"><span class="linenos">293</span></a> <span class="c1"># using the name of the pivoted source instead of the pivot's alias</span> +</span><span id="L-294"><a href="#L-294"><span class="linenos">294</span></a> <span class="n">column</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"table"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">alias</span><span class="p">))</span> +</span><span id="L-295"><a href="#L-295"><span class="linenos">295</span></a> <span class="k">continue</span> +</span><span id="L-296"><a href="#L-296"><span class="linenos">296</span></a> +</span><span id="L-297"><a href="#L-297"><span class="linenos">297</span></a> <span class="n">column_table</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_table</span><span class="p">(</span><span class="n">column_name</span><span class="p">)</span> +</span><span id="L-298"><a href="#L-298"><span class="linenos">298</span></a> +</span><span id="L-299"><a href="#L-299"><span class="linenos">299</span></a> <span class="c1"># column_table can be a '' because bigquery unnest has no table alias</span> +</span><span id="L-300"><a href="#L-300"><span class="linenos">300</span></a> <span class="k">if</span> <span class="n">column_table</span><span class="p">:</span> +</span><span id="L-301"><a href="#L-301"><span class="linenos">301</span></a> <span class="n">column</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"table"</span><span class="p">,</span> <span class="n">column_table</span><span class="p">)</span> +</span><span id="L-302"><a href="#L-302"><span class="linenos">302</span></a> <span class="k">elif</span> <span class="n">column_table</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span> <span class="ow">and</span> <span class="p">(</span> +</span><span id="L-303"><a href="#L-303"><span class="linenos">303</span></a> <span class="ow">not</span> <span class="n">scope</span><span class="o">.</span><span class="n">parent</span> <span class="ow">or</span> <span class="n">column_table</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">parent</span><span class="o">.</span><span class="n">sources</span> +</span><span id="L-304"><a href="#L-304"><span class="linenos">304</span></a> <span class="p">):</span> +</span><span id="L-305"><a href="#L-305"><span class="linenos">305</span></a> <span class="c1"># structs are used like tables (e.g. "struct"."field"), so they need to be qualified</span> +</span><span id="L-306"><a href="#L-306"><span class="linenos">306</span></a> <span class="c1"># separately and represented as dot(dot(...(<table>.<column>, field1), field2, ...))</span> +</span><span id="L-307"><a href="#L-307"><span class="linenos">307</span></a> +</span><span id="L-308"><a href="#L-308"><span class="linenos">308</span></a> <span class="n">root</span><span class="p">,</span> <span class="o">*</span><span class="n">parts</span> <span class="o">=</span> <span class="n">column</span><span class="o">.</span><span class="n">parts</span> +</span><span id="L-309"><a href="#L-309"><span class="linenos">309</span></a> +</span><span id="L-310"><a href="#L-310"><span class="linenos">310</span></a> <span class="k">if</span> <span class="n">root</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> +</span><span id="L-311"><a href="#L-311"><span class="linenos">311</span></a> <span class="c1"># struct is already qualified, but we still need to change the AST representation</span> +</span><span id="L-312"><a href="#L-312"><span class="linenos">312</span></a> <span class="n">column_table</span> <span class="o">=</span> <span class="n">root</span> +</span><span id="L-313"><a href="#L-313"><span class="linenos">313</span></a> <span class="n">root</span><span class="p">,</span> <span class="o">*</span><span class="n">parts</span> <span class="o">=</span> <span class="n">parts</span> +</span><span id="L-314"><a href="#L-314"><span class="linenos">314</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-315"><a href="#L-315"><span class="linenos">315</span></a> <span class="n">column_table</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_table</span><span class="p">(</span><span class="n">root</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> +</span><span id="L-316"><a href="#L-316"><span class="linenos">316</span></a> +</span><span id="L-317"><a href="#L-317"><span class="linenos">317</span></a> <span class="k">if</span> <span class="n">column_table</span><span class="p">:</span> +</span><span id="L-318"><a href="#L-318"><span class="linenos">318</span></a> <span class="n">column</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Dot</span><span class="o">.</span><span class="n">build</span><span class="p">([</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">root</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">column_table</span><span class="p">),</span> <span class="o">*</span><span class="n">parts</span><span class="p">]))</span> +</span><span id="L-319"><a href="#L-319"><span class="linenos">319</span></a> +</span><span id="L-320"><a href="#L-320"><span class="linenos">320</span></a> <span class="k">for</span> <span class="n">pivot</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">pivots</span><span class="p">:</span> +</span><span id="L-321"><a href="#L-321"><span class="linenos">321</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">pivot</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Column</span><span class="p">):</span> +</span><span id="L-322"><a href="#L-322"><span class="linenos">322</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">column</span><span class="o">.</span><span class="n">table</span> <span class="ow">and</span> <span class="n">column</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">resolver</span><span class="o">.</span><span class="n">all_columns</span><span class="p">:</span> +</span><span id="L-323"><a href="#L-323"><span class="linenos">323</span></a> <span class="n">column_table</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_table</span><span class="p">(</span><span class="n">column</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> +</span><span id="L-324"><a href="#L-324"><span class="linenos">324</span></a> <span class="k">if</span> <span class="n">column_table</span><span class="p">:</span> +</span><span id="L-325"><a href="#L-325"><span class="linenos">325</span></a> <span class="n">column</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"table"</span><span class="p">,</span> <span class="n">column_table</span><span class="p">)</span> </span><span id="L-326"><a href="#L-326"><span class="linenos">326</span></a> -</span><span id="L-327"><a href="#L-327"><span class="linenos">327</span></a><span class="k">def</span> <span class="nf">_expand_stars</span><span class="p">(</span> -</span><span id="L-328"><a href="#L-328"><span class="linenos">328</span></a> <span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">:</span> <span class="n">Resolver</span><span class="p">,</span> <span class="n">using_column_tables</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">Any</span><span class="p">]</span> -</span><span id="L-329"><a href="#L-329"><span class="linenos">329</span></a><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> -</span><span id="L-330"><a href="#L-330"><span class="linenos">330</span></a><span class="w"> </span><span class="sd">"""Expand stars to lists of column selections"""</span> -</span><span id="L-331"><a href="#L-331"><span class="linenos">331</span></a> -</span><span id="L-332"><a href="#L-332"><span class="linenos">332</span></a> <span class="n">new_selections</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="L-333"><a href="#L-333"><span class="linenos">333</span></a> <span class="n">except_columns</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">int</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">Set</span><span class="p">[</span><span class="nb">str</span><span class="p">]]</span> <span class="o">=</span> <span class="p">{}</span> -</span><span id="L-334"><a href="#L-334"><span class="linenos">334</span></a> <span class="n">replace_columns</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">int</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">str</span><span class="p">]]</span> <span class="o">=</span> <span class="p">{}</span> -</span><span id="L-335"><a href="#L-335"><span class="linenos">335</span></a> <span class="n">coalesced_columns</span> <span class="o">=</span> <span class="nb">set</span><span class="p">()</span> -</span><span id="L-336"><a href="#L-336"><span class="linenos">336</span></a> -</span><span id="L-337"><a href="#L-337"><span class="linenos">337</span></a> <span class="c1"># TODO: handle optimization of multiple PIVOTs (and possibly UNPIVOTs) in the future</span> -</span><span id="L-338"><a href="#L-338"><span class="linenos">338</span></a> <span class="n">pivot_columns</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="L-339"><a href="#L-339"><span class="linenos">339</span></a> <span class="n">pivot_output_columns</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="L-340"><a href="#L-340"><span class="linenos">340</span></a> <span class="n">pivot</span> <span class="o">=</span> <span class="n">t</span><span class="o">.</span><span class="n">cast</span><span class="p">(</span><span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Pivot</span><span class="p">],</span> <span class="n">seq_get</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">pivots</span><span class="p">,</span> <span class="mi">0</span><span class="p">))</span> -</span><span id="L-341"><a href="#L-341"><span class="linenos">341</span></a> -</span><span id="L-342"><a href="#L-342"><span class="linenos">342</span></a> <span class="n">has_pivoted_source</span> <span class="o">=</span> <span class="n">pivot</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">pivot</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"unpivot"</span><span class="p">)</span> -</span><span id="L-343"><a href="#L-343"><span class="linenos">343</span></a> <span class="k">if</span> <span class="n">pivot</span> <span class="ow">and</span> <span class="n">has_pivoted_source</span><span class="p">:</span> -</span><span id="L-344"><a href="#L-344"><span class="linenos">344</span></a> <span class="n">pivot_columns</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">col</span><span class="o">.</span><span class="n">output_name</span> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="n">pivot</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Column</span><span class="p">))</span> -</span><span id="L-345"><a href="#L-345"><span class="linenos">345</span></a> -</span><span id="L-346"><a href="#L-346"><span class="linenos">346</span></a> <span class="n">pivot_output_columns</span> <span class="o">=</span> <span class="p">[</span><span class="n">col</span><span class="o">.</span><span class="n">output_name</span> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="n">pivot</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"columns"</span><span class="p">,</span> <span class="p">[])]</span> -</span><span id="L-347"><a href="#L-347"><span class="linenos">347</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">pivot_output_columns</span><span class="p">:</span> -</span><span id="L-348"><a href="#L-348"><span class="linenos">348</span></a> <span class="n">pivot_output_columns</span> <span class="o">=</span> <span class="p">[</span><span class="n">col</span><span class="o">.</span><span class="n">alias_or_name</span> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="n">pivot</span><span class="o">.</span><span class="n">expressions</span><span class="p">]</span> -</span><span id="L-349"><a href="#L-349"><span class="linenos">349</span></a> -</span><span id="L-350"><a href="#L-350"><span class="linenos">350</span></a> <span class="k">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">selects</span><span class="p">:</span> -</span><span id="L-351"><a href="#L-351"><span class="linenos">351</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Star</span><span class="p">):</span> -</span><span id="L-352"><a href="#L-352"><span class="linenos">352</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">)</span> -</span><span id="L-353"><a href="#L-353"><span class="linenos">353</span></a> <span class="n">_add_except_columns</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">tables</span><span class="p">,</span> <span class="n">except_columns</span><span class="p">)</span> -</span><span id="L-354"><a href="#L-354"><span class="linenos">354</span></a> <span class="n">_add_replace_columns</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">tables</span><span class="p">,</span> <span class="n">replace_columns</span><span class="p">)</span> -</span><span id="L-355"><a href="#L-355"><span class="linenos">355</span></a> <span class="k">elif</span> <span class="n">expression</span><span class="o">.</span><span class="n">is_star</span><span class="p">:</span> -</span><span id="L-356"><a href="#L-356"><span class="linenos">356</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="p">[</span><span class="n">expression</span><span class="o">.</span><span class="n">table</span><span class="p">]</span> -</span><span id="L-357"><a href="#L-357"><span class="linenos">357</span></a> <span class="n">_add_except_columns</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">tables</span><span class="p">,</span> <span class="n">except_columns</span><span class="p">)</span> -</span><span id="L-358"><a href="#L-358"><span class="linenos">358</span></a> <span class="n">_add_replace_columns</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">tables</span><span class="p">,</span> <span class="n">replace_columns</span><span class="p">)</span> -</span><span id="L-359"><a href="#L-359"><span class="linenos">359</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-360"><a href="#L-360"><span class="linenos">360</span></a> <span class="n">new_selections</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> -</span><span id="L-361"><a href="#L-361"><span class="linenos">361</span></a> <span class="k">continue</span> -</span><span id="L-362"><a href="#L-362"><span class="linenos">362</span></a> -</span><span id="L-363"><a href="#L-363"><span class="linenos">363</span></a> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> -</span><span id="L-364"><a href="#L-364"><span class="linenos">364</span></a> <span class="k">if</span> <span class="n">table</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> -</span><span id="L-365"><a href="#L-365"><span class="linenos">365</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown table: </span><span class="si">{</span><span class="n">table</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> -</span><span id="L-366"><a href="#L-366"><span class="linenos">366</span></a> -</span><span id="L-367"><a href="#L-367"><span class="linenos">367</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">table</span><span class="p">,</span> <span class="n">only_visible</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> -</span><span id="L-368"><a href="#L-368"><span class="linenos">368</span></a> -</span><span id="L-369"><a href="#L-369"><span class="linenos">369</span></a> <span class="c1"># The _PARTITIONTIME and _PARTITIONDATE pseudo-columns are not returned by a SELECT * statement</span> -</span><span id="L-370"><a href="#L-370"><span class="linenos">370</span></a> <span class="c1"># https://cloud.google.com/bigquery/docs/querying-partitioned-tables#query_an_ingestion-time_partitioned_table</span> -</span><span id="L-371"><a href="#L-371"><span class="linenos">371</span></a> <span class="k">if</span> <span class="n">resolver</span><span class="o">.</span><span class="n">schema</span><span class="o">.</span><span class="n">dialect</span> <span class="o">==</span> <span class="s2">"bigquery"</span><span class="p">:</span> -</span><span id="L-372"><a href="#L-372"><span class="linenos">372</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="p">[</span> -</span><span id="L-373"><a href="#L-373"><span class="linenos">373</span></a> <span class="n">name</span> -</span><span id="L-374"><a href="#L-374"><span class="linenos">374</span></a> <span class="k">for</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">columns</span> -</span><span id="L-375"><a href="#L-375"><span class="linenos">375</span></a> <span class="k">if</span> <span class="n">name</span><span class="o">.</span><span class="n">upper</span><span class="p">()</span> <span class="ow">not</span> <span class="ow">in</span> <span class="p">(</span><span class="s2">"_PARTITIONTIME"</span><span class="p">,</span> <span class="s2">"_PARTITIONDATE"</span><span class="p">)</span> -</span><span id="L-376"><a href="#L-376"><span class="linenos">376</span></a> <span class="p">]</span> -</span><span id="L-377"><a href="#L-377"><span class="linenos">377</span></a> -</span><span id="L-378"><a href="#L-378"><span class="linenos">378</span></a> <span class="k">if</span> <span class="n">columns</span> <span class="ow">and</span> <span class="s2">"*"</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span> -</span><span id="L-379"><a href="#L-379"><span class="linenos">379</span></a> <span class="k">if</span> <span class="n">pivot</span> <span class="ow">and</span> <span class="n">has_pivoted_source</span> <span class="ow">and</span> <span class="n">pivot_columns</span> <span class="ow">and</span> <span class="n">pivot_output_columns</span><span class="p">:</span> -</span><span id="L-380"><a href="#L-380"><span class="linenos">380</span></a> <span class="n">implicit_columns</span> <span class="o">=</span> <span class="p">[</span><span class="n">col</span> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="n">columns</span> <span class="k">if</span> <span class="n">col</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">pivot_columns</span><span class="p">]</span> -</span><span id="L-381"><a href="#L-381"><span class="linenos">381</span></a> <span class="n">new_selections</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span> -</span><span id="L-382"><a href="#L-382"><span class="linenos">382</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">alias_</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">pivot</span><span class="o">.</span><span class="n">alias</span><span class="p">),</span> <span class="n">name</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> -</span><span id="L-383"><a href="#L-383"><span class="linenos">383</span></a> <span class="k">for</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">implicit_columns</span> <span class="o">+</span> <span class="n">pivot_output_columns</span> -</span><span id="L-384"><a href="#L-384"><span class="linenos">384</span></a> <span class="p">)</span> -</span><span id="L-385"><a href="#L-385"><span class="linenos">385</span></a> <span class="k">continue</span> -</span><span id="L-386"><a href="#L-386"><span class="linenos">386</span></a> -</span><span id="L-387"><a href="#L-387"><span class="linenos">387</span></a> <span class="n">table_id</span> <span class="o">=</span> <span class="nb">id</span><span class="p">(</span><span class="n">table</span><span class="p">)</span> -</span><span id="L-388"><a href="#L-388"><span class="linenos">388</span></a> <span class="k">for</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span> -</span><span id="L-389"><a href="#L-389"><span class="linenos">389</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">using_column_tables</span> <span class="ow">and</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">using_column_tables</span><span class="p">[</span><span class="n">name</span><span class="p">]:</span> -</span><span id="L-390"><a href="#L-390"><span class="linenos">390</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">coalesced_columns</span><span class="p">:</span> -</span><span id="L-391"><a href="#L-391"><span class="linenos">391</span></a> <span class="k">continue</span> -</span><span id="L-392"><a href="#L-392"><span class="linenos">392</span></a> -</span><span id="L-393"><a href="#L-393"><span class="linenos">393</span></a> <span class="n">coalesced_columns</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">name</span><span class="p">)</span> -</span><span id="L-394"><a href="#L-394"><span class="linenos">394</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="n">using_column_tables</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> -</span><span id="L-395"><a href="#L-395"><span class="linenos">395</span></a> <span class="n">coalesce</span> <span class="o">=</span> <span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">table</span><span class="p">)</span> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">]</span> -</span><span id="L-396"><a href="#L-396"><span class="linenos">396</span></a> -</span><span id="L-397"><a href="#L-397"><span class="linenos">397</span></a> <span class="n">new_selections</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> -</span><span id="L-398"><a href="#L-398"><span class="linenos">398</span></a> <span class="n">alias</span><span class="p">(</span> -</span><span id="L-399"><a href="#L-399"><span class="linenos">399</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Coalesce</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">coalesce</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">expressions</span><span class="o">=</span><span class="n">coalesce</span><span class="p">[</span><span class="mi">1</span><span class="p">:]),</span> -</span><span id="L-400"><a href="#L-400"><span class="linenos">400</span></a> <span class="n">alias</span><span class="o">=</span><span class="n">name</span><span class="p">,</span> -</span><span id="L-401"><a href="#L-401"><span class="linenos">401</span></a> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> -</span><span id="L-402"><a href="#L-402"><span class="linenos">402</span></a> <span class="p">)</span> -</span><span id="L-403"><a href="#L-403"><span class="linenos">403</span></a> <span class="p">)</span> -</span><span id="L-404"><a href="#L-404"><span class="linenos">404</span></a> <span class="k">elif</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">except_columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">table_id</span><span class="p">,</span> <span class="nb">set</span><span class="p">()):</span> -</span><span id="L-405"><a href="#L-405"><span class="linenos">405</span></a> <span class="n">alias_</span> <span class="o">=</span> <span class="n">replace_columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">table_id</span><span class="p">,</span> <span class="p">{})</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">name</span><span class="p">)</span> -</span><span id="L-406"><a href="#L-406"><span class="linenos">406</span></a> <span class="n">column</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">table</span><span class="p">)</span> -</span><span id="L-407"><a href="#L-407"><span class="linenos">407</span></a> <span class="n">new_selections</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> -</span><span id="L-408"><a href="#L-408"><span class="linenos">408</span></a> <span class="n">alias</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="n">alias_</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> <span class="k">if</span> <span class="n">alias_</span> <span class="o">!=</span> <span class="n">name</span> <span class="k">else</span> <span class="n">column</span> -</span><span id="L-409"><a href="#L-409"><span class="linenos">409</span></a> <span class="p">)</span> -</span><span id="L-410"><a href="#L-410"><span class="linenos">410</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-411"><a href="#L-411"><span class="linenos">411</span></a> <span class="k">return</span> -</span><span id="L-412"><a href="#L-412"><span class="linenos">412</span></a> -</span><span id="L-413"><a href="#L-413"><span class="linenos">413</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"expressions"</span><span class="p">,</span> <span class="n">new_selections</span><span class="p">)</span> -</span><span id="L-414"><a href="#L-414"><span class="linenos">414</span></a> -</span><span id="L-415"><a href="#L-415"><span class="linenos">415</span></a> -</span><span id="L-416"><a href="#L-416"><span class="linenos">416</span></a><span class="k">def</span> <span class="nf">_add_except_columns</span><span class="p">(</span> -</span><span id="L-417"><a href="#L-417"><span class="linenos">417</span></a> <span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">,</span> <span class="n">tables</span><span class="p">,</span> <span class="n">except_columns</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">int</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">Set</span><span class="p">[</span><span class="nb">str</span><span class="p">]]</span> -</span><span id="L-418"><a href="#L-418"><span class="linenos">418</span></a><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> -</span><span id="L-419"><a href="#L-419"><span class="linenos">419</span></a> <span class="n">except_</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"except"</span><span class="p">)</span> -</span><span id="L-420"><a href="#L-420"><span class="linenos">420</span></a> -</span><span id="L-421"><a href="#L-421"><span class="linenos">421</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">except_</span><span class="p">:</span> -</span><span id="L-422"><a href="#L-422"><span class="linenos">422</span></a> <span class="k">return</span> +</span><span id="L-327"><a href="#L-327"><span class="linenos">327</span></a> +</span><span id="L-328"><a href="#L-328"><span class="linenos">328</span></a><span class="k">def</span> <span class="nf">_expand_stars</span><span class="p">(</span> +</span><span id="L-329"><a href="#L-329"><span class="linenos">329</span></a> <span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">:</span> <span class="n">Resolver</span><span class="p">,</span> <span class="n">using_column_tables</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">Any</span><span class="p">]</span> +</span><span id="L-330"><a href="#L-330"><span class="linenos">330</span></a><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> +</span><span id="L-331"><a href="#L-331"><span class="linenos">331</span></a><span class="w"> </span><span class="sd">"""Expand stars to lists of column selections"""</span> +</span><span id="L-332"><a href="#L-332"><span class="linenos">332</span></a> +</span><span id="L-333"><a href="#L-333"><span class="linenos">333</span></a> <span class="n">new_selections</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="L-334"><a href="#L-334"><span class="linenos">334</span></a> <span class="n">except_columns</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">int</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">Set</span><span class="p">[</span><span class="nb">str</span><span class="p">]]</span> <span class="o">=</span> <span class="p">{}</span> +</span><span id="L-335"><a href="#L-335"><span class="linenos">335</span></a> <span class="n">replace_columns</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">int</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">str</span><span class="p">]]</span> <span class="o">=</span> <span class="p">{}</span> +</span><span id="L-336"><a href="#L-336"><span class="linenos">336</span></a> <span class="n">coalesced_columns</span> <span class="o">=</span> <span class="nb">set</span><span class="p">()</span> +</span><span id="L-337"><a href="#L-337"><span class="linenos">337</span></a> +</span><span id="L-338"><a href="#L-338"><span class="linenos">338</span></a> <span class="c1"># TODO: handle optimization of multiple PIVOTs (and possibly UNPIVOTs) in the future</span> +</span><span id="L-339"><a href="#L-339"><span class="linenos">339</span></a> <span class="n">pivot_columns</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="L-340"><a href="#L-340"><span class="linenos">340</span></a> <span class="n">pivot_output_columns</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="L-341"><a href="#L-341"><span class="linenos">341</span></a> <span class="n">pivot</span> <span class="o">=</span> <span class="n">t</span><span class="o">.</span><span class="n">cast</span><span class="p">(</span><span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Pivot</span><span class="p">],</span> <span class="n">seq_get</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">pivots</span><span class="p">,</span> <span class="mi">0</span><span class="p">))</span> +</span><span id="L-342"><a href="#L-342"><span class="linenos">342</span></a> +</span><span id="L-343"><a href="#L-343"><span class="linenos">343</span></a> <span class="n">has_pivoted_source</span> <span class="o">=</span> <span class="n">pivot</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">pivot</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"unpivot"</span><span class="p">)</span> +</span><span id="L-344"><a href="#L-344"><span class="linenos">344</span></a> <span class="k">if</span> <span class="n">pivot</span> <span class="ow">and</span> <span class="n">has_pivoted_source</span><span class="p">:</span> +</span><span id="L-345"><a href="#L-345"><span class="linenos">345</span></a> <span class="n">pivot_columns</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">col</span><span class="o">.</span><span class="n">output_name</span> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="n">pivot</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Column</span><span class="p">))</span> +</span><span id="L-346"><a href="#L-346"><span class="linenos">346</span></a> +</span><span id="L-347"><a href="#L-347"><span class="linenos">347</span></a> <span class="n">pivot_output_columns</span> <span class="o">=</span> <span class="p">[</span><span class="n">col</span><span class="o">.</span><span class="n">output_name</span> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="n">pivot</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"columns"</span><span class="p">,</span> <span class="p">[])]</span> +</span><span id="L-348"><a href="#L-348"><span class="linenos">348</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">pivot_output_columns</span><span class="p">:</span> +</span><span id="L-349"><a href="#L-349"><span class="linenos">349</span></a> <span class="n">pivot_output_columns</span> <span class="o">=</span> <span class="p">[</span><span class="n">col</span><span class="o">.</span><span class="n">alias_or_name</span> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="n">pivot</span><span class="o">.</span><span class="n">expressions</span><span class="p">]</span> +</span><span id="L-350"><a href="#L-350"><span class="linenos">350</span></a> +</span><span id="L-351"><a href="#L-351"><span class="linenos">351</span></a> <span class="k">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">selects</span><span class="p">:</span> +</span><span id="L-352"><a href="#L-352"><span class="linenos">352</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Star</span><span class="p">):</span> +</span><span id="L-353"><a href="#L-353"><span class="linenos">353</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">)</span> +</span><span id="L-354"><a href="#L-354"><span class="linenos">354</span></a> <span class="n">_add_except_columns</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">tables</span><span class="p">,</span> <span class="n">except_columns</span><span class="p">)</span> +</span><span id="L-355"><a href="#L-355"><span class="linenos">355</span></a> <span class="n">_add_replace_columns</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">tables</span><span class="p">,</span> <span class="n">replace_columns</span><span class="p">)</span> +</span><span id="L-356"><a href="#L-356"><span class="linenos">356</span></a> <span class="k">elif</span> <span class="n">expression</span><span class="o">.</span><span class="n">is_star</span><span class="p">:</span> +</span><span id="L-357"><a href="#L-357"><span class="linenos">357</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="p">[</span><span class="n">expression</span><span class="o">.</span><span class="n">table</span><span class="p">]</span> +</span><span id="L-358"><a href="#L-358"><span class="linenos">358</span></a> <span class="n">_add_except_columns</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">tables</span><span class="p">,</span> <span class="n">except_columns</span><span class="p">)</span> +</span><span id="L-359"><a href="#L-359"><span class="linenos">359</span></a> <span class="n">_add_replace_columns</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">tables</span><span class="p">,</span> <span class="n">replace_columns</span><span class="p">)</span> +</span><span id="L-360"><a href="#L-360"><span class="linenos">360</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-361"><a href="#L-361"><span class="linenos">361</span></a> <span class="n">new_selections</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> +</span><span id="L-362"><a href="#L-362"><span class="linenos">362</span></a> <span class="k">continue</span> +</span><span id="L-363"><a href="#L-363"><span class="linenos">363</span></a> +</span><span id="L-364"><a href="#L-364"><span class="linenos">364</span></a> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> +</span><span id="L-365"><a href="#L-365"><span class="linenos">365</span></a> <span class="k">if</span> <span class="n">table</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> +</span><span id="L-366"><a href="#L-366"><span class="linenos">366</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown table: </span><span class="si">{</span><span class="n">table</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="L-367"><a href="#L-367"><span class="linenos">367</span></a> +</span><span id="L-368"><a href="#L-368"><span class="linenos">368</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">table</span><span class="p">,</span> <span class="n">only_visible</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> +</span><span id="L-369"><a href="#L-369"><span class="linenos">369</span></a> +</span><span id="L-370"><a href="#L-370"><span class="linenos">370</span></a> <span class="c1"># The _PARTITIONTIME and _PARTITIONDATE pseudo-columns are not returned by a SELECT * statement</span> +</span><span id="L-371"><a href="#L-371"><span class="linenos">371</span></a> <span class="c1"># https://cloud.google.com/bigquery/docs/querying-partitioned-tables#query_an_ingestion-time_partitioned_table</span> +</span><span id="L-372"><a href="#L-372"><span class="linenos">372</span></a> <span class="k">if</span> <span class="n">resolver</span><span class="o">.</span><span class="n">schema</span><span class="o">.</span><span class="n">dialect</span> <span class="o">==</span> <span class="s2">"bigquery"</span><span class="p">:</span> +</span><span id="L-373"><a href="#L-373"><span class="linenos">373</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="p">[</span> +</span><span id="L-374"><a href="#L-374"><span class="linenos">374</span></a> <span class="n">name</span> +</span><span id="L-375"><a href="#L-375"><span class="linenos">375</span></a> <span class="k">for</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">columns</span> +</span><span id="L-376"><a href="#L-376"><span class="linenos">376</span></a> <span class="k">if</span> <span class="n">name</span><span class="o">.</span><span class="n">upper</span><span class="p">()</span> <span class="ow">not</span> <span class="ow">in</span> <span class="p">(</span><span class="s2">"_PARTITIONTIME"</span><span class="p">,</span> <span class="s2">"_PARTITIONDATE"</span><span class="p">)</span> +</span><span id="L-377"><a href="#L-377"><span class="linenos">377</span></a> <span class="p">]</span> +</span><span id="L-378"><a href="#L-378"><span class="linenos">378</span></a> +</span><span id="L-379"><a href="#L-379"><span class="linenos">379</span></a> <span class="k">if</span> <span class="n">columns</span> <span class="ow">and</span> <span class="s2">"*"</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span> +</span><span id="L-380"><a href="#L-380"><span class="linenos">380</span></a> <span class="k">if</span> <span class="n">pivot</span> <span class="ow">and</span> <span class="n">has_pivoted_source</span> <span class="ow">and</span> <span class="n">pivot_columns</span> <span class="ow">and</span> <span class="n">pivot_output_columns</span><span class="p">:</span> +</span><span id="L-381"><a href="#L-381"><span class="linenos">381</span></a> <span class="n">implicit_columns</span> <span class="o">=</span> <span class="p">[</span><span class="n">col</span> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="n">columns</span> <span class="k">if</span> <span class="n">col</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">pivot_columns</span><span class="p">]</span> +</span><span id="L-382"><a href="#L-382"><span class="linenos">382</span></a> <span class="n">new_selections</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span> +</span><span id="L-383"><a href="#L-383"><span class="linenos">383</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">alias_</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">pivot</span><span class="o">.</span><span class="n">alias</span><span class="p">),</span> <span class="n">name</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> +</span><span id="L-384"><a href="#L-384"><span class="linenos">384</span></a> <span class="k">for</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">implicit_columns</span> <span class="o">+</span> <span class="n">pivot_output_columns</span> +</span><span id="L-385"><a href="#L-385"><span class="linenos">385</span></a> <span class="p">)</span> +</span><span id="L-386"><a href="#L-386"><span class="linenos">386</span></a> <span class="k">continue</span> +</span><span id="L-387"><a href="#L-387"><span class="linenos">387</span></a> +</span><span id="L-388"><a href="#L-388"><span class="linenos">388</span></a> <span class="n">table_id</span> <span class="o">=</span> <span class="nb">id</span><span class="p">(</span><span class="n">table</span><span class="p">)</span> +</span><span id="L-389"><a href="#L-389"><span class="linenos">389</span></a> <span class="k">for</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span> +</span><span id="L-390"><a href="#L-390"><span class="linenos">390</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">using_column_tables</span> <span class="ow">and</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">using_column_tables</span><span class="p">[</span><span class="n">name</span><span class="p">]:</span> +</span><span id="L-391"><a href="#L-391"><span class="linenos">391</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">coalesced_columns</span><span class="p">:</span> +</span><span id="L-392"><a href="#L-392"><span class="linenos">392</span></a> <span class="k">continue</span> +</span><span id="L-393"><a href="#L-393"><span class="linenos">393</span></a> +</span><span id="L-394"><a href="#L-394"><span class="linenos">394</span></a> <span class="n">coalesced_columns</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">name</span><span class="p">)</span> +</span><span id="L-395"><a href="#L-395"><span class="linenos">395</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="n">using_column_tables</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> +</span><span id="L-396"><a href="#L-396"><span class="linenos">396</span></a> <span class="n">coalesce</span> <span class="o">=</span> <span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">table</span><span class="p">)</span> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">]</span> +</span><span id="L-397"><a href="#L-397"><span class="linenos">397</span></a> +</span><span id="L-398"><a href="#L-398"><span class="linenos">398</span></a> <span class="n">new_selections</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> +</span><span id="L-399"><a href="#L-399"><span class="linenos">399</span></a> <span class="n">alias</span><span class="p">(</span> +</span><span id="L-400"><a href="#L-400"><span class="linenos">400</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Coalesce</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">coalesce</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">expressions</span><span class="o">=</span><span class="n">coalesce</span><span class="p">[</span><span class="mi">1</span><span class="p">:]),</span> +</span><span id="L-401"><a href="#L-401"><span class="linenos">401</span></a> <span class="n">alias</span><span class="o">=</span><span class="n">name</span><span class="p">,</span> +</span><span id="L-402"><a href="#L-402"><span class="linenos">402</span></a> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> +</span><span id="L-403"><a href="#L-403"><span class="linenos">403</span></a> <span class="p">)</span> +</span><span id="L-404"><a href="#L-404"><span class="linenos">404</span></a> <span class="p">)</span> +</span><span id="L-405"><a href="#L-405"><span class="linenos">405</span></a> <span class="k">elif</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">except_columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">table_id</span><span class="p">,</span> <span class="nb">set</span><span class="p">()):</span> +</span><span id="L-406"><a href="#L-406"><span class="linenos">406</span></a> <span class="n">alias_</span> <span class="o">=</span> <span class="n">replace_columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">table_id</span><span class="p">,</span> <span class="p">{})</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">name</span><span class="p">)</span> +</span><span id="L-407"><a href="#L-407"><span class="linenos">407</span></a> <span class="n">column</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">table</span><span class="p">)</span> +</span><span id="L-408"><a href="#L-408"><span class="linenos">408</span></a> <span class="n">new_selections</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> +</span><span id="L-409"><a href="#L-409"><span class="linenos">409</span></a> <span class="n">alias</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="n">alias_</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> <span class="k">if</span> <span class="n">alias_</span> <span class="o">!=</span> <span class="n">name</span> <span class="k">else</span> <span class="n">column</span> +</span><span id="L-410"><a href="#L-410"><span class="linenos">410</span></a> <span class="p">)</span> +</span><span id="L-411"><a href="#L-411"><span class="linenos">411</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-412"><a href="#L-412"><span class="linenos">412</span></a> <span class="k">return</span> +</span><span id="L-413"><a href="#L-413"><span class="linenos">413</span></a> +</span><span id="L-414"><a href="#L-414"><span class="linenos">414</span></a> <span class="c1"># Ensures we don't overwrite the initial selections with an empty list</span> +</span><span id="L-415"><a href="#L-415"><span class="linenos">415</span></a> <span class="k">if</span> <span class="n">new_selections</span><span class="p">:</span> +</span><span id="L-416"><a href="#L-416"><span class="linenos">416</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"expressions"</span><span class="p">,</span> <span class="n">new_selections</span><span class="p">)</span> +</span><span id="L-417"><a href="#L-417"><span class="linenos">417</span></a> +</span><span id="L-418"><a href="#L-418"><span class="linenos">418</span></a> +</span><span id="L-419"><a href="#L-419"><span class="linenos">419</span></a><span class="k">def</span> <span class="nf">_add_except_columns</span><span class="p">(</span> +</span><span id="L-420"><a href="#L-420"><span class="linenos">420</span></a> <span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">,</span> <span class="n">tables</span><span class="p">,</span> <span class="n">except_columns</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">int</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">Set</span><span class="p">[</span><span class="nb">str</span><span class="p">]]</span> +</span><span id="L-421"><a href="#L-421"><span class="linenos">421</span></a><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> +</span><span id="L-422"><a href="#L-422"><span class="linenos">422</span></a> <span class="n">except_</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"except"</span><span class="p">)</span> </span><span id="L-423"><a href="#L-423"><span class="linenos">423</span></a> -</span><span id="L-424"><a href="#L-424"><span class="linenos">424</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="p">{</span><span class="n">e</span><span class="o">.</span><span class="n">name</span> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">except_</span><span class="p">}</span> -</span><span id="L-425"><a href="#L-425"><span class="linenos">425</span></a> -</span><span id="L-426"><a href="#L-426"><span class="linenos">426</span></a> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> -</span><span id="L-427"><a href="#L-427"><span class="linenos">427</span></a> <span class="n">except_columns</span><span class="p">[</span><span class="nb">id</span><span class="p">(</span><span class="n">table</span><span class="p">)]</span> <span class="o">=</span> <span class="n">columns</span> +</span><span id="L-424"><a href="#L-424"><span class="linenos">424</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">except_</span><span class="p">:</span> +</span><span id="L-425"><a href="#L-425"><span class="linenos">425</span></a> <span class="k">return</span> +</span><span id="L-426"><a href="#L-426"><span class="linenos">426</span></a> +</span><span id="L-427"><a href="#L-427"><span class="linenos">427</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="p">{</span><span class="n">e</span><span class="o">.</span><span class="n">name</span> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">except_</span><span class="p">}</span> </span><span id="L-428"><a href="#L-428"><span class="linenos">428</span></a> -</span><span id="L-429"><a href="#L-429"><span class="linenos">429</span></a> -</span><span id="L-430"><a href="#L-430"><span class="linenos">430</span></a><span class="k">def</span> <span class="nf">_add_replace_columns</span><span class="p">(</span> -</span><span id="L-431"><a href="#L-431"><span class="linenos">431</span></a> <span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">,</span> <span class="n">tables</span><span class="p">,</span> <span class="n">replace_columns</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">int</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">str</span><span class="p">]]</span> -</span><span id="L-432"><a href="#L-432"><span class="linenos">432</span></a><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> -</span><span id="L-433"><a href="#L-433"><span class="linenos">433</span></a> <span class="n">replace</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"replace"</span><span class="p">)</span> -</span><span id="L-434"><a href="#L-434"><span class="linenos">434</span></a> -</span><span id="L-435"><a href="#L-435"><span class="linenos">435</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">replace</span><span class="p">:</span> -</span><span id="L-436"><a href="#L-436"><span class="linenos">436</span></a> <span class="k">return</span> +</span><span id="L-429"><a href="#L-429"><span class="linenos">429</span></a> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> +</span><span id="L-430"><a href="#L-430"><span class="linenos">430</span></a> <span class="n">except_columns</span><span class="p">[</span><span class="nb">id</span><span class="p">(</span><span class="n">table</span><span class="p">)]</span> <span class="o">=</span> <span class="n">columns</span> +</span><span id="L-431"><a href="#L-431"><span class="linenos">431</span></a> +</span><span id="L-432"><a href="#L-432"><span class="linenos">432</span></a> +</span><span id="L-433"><a href="#L-433"><span class="linenos">433</span></a><span class="k">def</span> <span class="nf">_add_replace_columns</span><span class="p">(</span> +</span><span id="L-434"><a href="#L-434"><span class="linenos">434</span></a> <span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">,</span> <span class="n">tables</span><span class="p">,</span> <span class="n">replace_columns</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">int</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">str</span><span class="p">]]</span> +</span><span id="L-435"><a href="#L-435"><span class="linenos">435</span></a><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> +</span><span id="L-436"><a href="#L-436"><span class="linenos">436</span></a> <span class="n">replace</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"replace"</span><span class="p">)</span> </span><span id="L-437"><a href="#L-437"><span class="linenos">437</span></a> -</span><span id="L-438"><a href="#L-438"><span class="linenos">438</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="p">{</span><span class="n">e</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">name</span><span class="p">:</span> <span class="n">e</span><span class="o">.</span><span class="n">alias</span> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">replace</span><span class="p">}</span> -</span><span id="L-439"><a href="#L-439"><span class="linenos">439</span></a> -</span><span id="L-440"><a href="#L-440"><span class="linenos">440</span></a> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> -</span><span id="L-441"><a href="#L-441"><span class="linenos">441</span></a> <span class="n">replace_columns</span><span class="p">[</span><span class="nb">id</span><span class="p">(</span><span class="n">table</span><span class="p">)]</span> <span class="o">=</span> <span class="n">columns</span> +</span><span id="L-438"><a href="#L-438"><span class="linenos">438</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">replace</span><span class="p">:</span> +</span><span id="L-439"><a href="#L-439"><span class="linenos">439</span></a> <span class="k">return</span> +</span><span id="L-440"><a href="#L-440"><span class="linenos">440</span></a> +</span><span id="L-441"><a href="#L-441"><span class="linenos">441</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="p">{</span><span class="n">e</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">name</span><span class="p">:</span> <span class="n">e</span><span class="o">.</span><span class="n">alias</span> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">replace</span><span class="p">}</span> </span><span id="L-442"><a href="#L-442"><span class="linenos">442</span></a> -</span><span id="L-443"><a href="#L-443"><span class="linenos">443</span></a> -</span><span id="L-444"><a href="#L-444"><span class="linenos">444</span></a><span class="k">def</span> <span class="nf">_qualify_outputs</span><span class="p">(</span><span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">):</span> -</span><span id="L-445"><a href="#L-445"><span class="linenos">445</span></a><span class="w"> </span><span class="sd">"""Ensure all output columns are aliased"""</span> -</span><span id="L-446"><a href="#L-446"><span class="linenos">446</span></a> <span class="n">new_selections</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="L-447"><a href="#L-447"><span class="linenos">447</span></a> -</span><span id="L-448"><a href="#L-448"><span class="linenos">448</span></a> <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="p">(</span><span class="n">selection</span><span class="p">,</span> <span class="n">aliased_column</span><span class="p">)</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span> -</span><span id="L-449"><a href="#L-449"><span class="linenos">449</span></a> <span class="n">itertools</span><span class="o">.</span><span class="n">zip_longest</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">selects</span><span class="p">,</span> <span class="n">scope</span><span class="o">.</span><span class="n">outer_column_list</span><span class="p">)</span> -</span><span id="L-450"><a href="#L-450"><span class="linenos">450</span></a> <span class="p">):</span> -</span><span id="L-451"><a href="#L-451"><span class="linenos">451</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">selection</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">):</span> -</span><span id="L-452"><a href="#L-452"><span class="linenos">452</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">selection</span><span class="o">.</span><span class="n">output_name</span><span class="p">:</span> -</span><span id="L-453"><a href="#L-453"><span class="linenos">453</span></a> <span class="n">selection</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="sa">f</span><span class="s2">"_col_</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">"</span><span class="p">)))</span> -</span><span id="L-454"><a href="#L-454"><span class="linenos">454</span></a> <span class="k">elif</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">selection</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Alias</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">selection</span><span class="o">.</span><span class="n">is_star</span><span class="p">:</span> -</span><span id="L-455"><a href="#L-455"><span class="linenos">455</span></a> <span class="n">selection</span> <span class="o">=</span> <span class="n">alias</span><span class="p">(</span> -</span><span id="L-456"><a href="#L-456"><span class="linenos">456</span></a> <span class="n">selection</span><span class="p">,</span> -</span><span id="L-457"><a href="#L-457"><span class="linenos">457</span></a> <span class="n">alias</span><span class="o">=</span><span class="n">selection</span><span class="o">.</span><span class="n">output_name</span> <span class="ow">or</span> <span class="sa">f</span><span class="s2">"_col_</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">"</span><span class="p">,</span> -</span><span id="L-458"><a href="#L-458"><span class="linenos">458</span></a> <span class="p">)</span> -</span><span id="L-459"><a href="#L-459"><span class="linenos">459</span></a> <span class="k">if</span> <span class="n">aliased_column</span><span class="p">:</span> -</span><span id="L-460"><a href="#L-460"><span class="linenos">460</span></a> <span class="n">selection</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">aliased_column</span><span class="p">))</span> -</span><span id="L-461"><a href="#L-461"><span class="linenos">461</span></a> -</span><span id="L-462"><a href="#L-462"><span class="linenos">462</span></a> <span class="n">new_selections</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">selection</span><span class="p">)</span> -</span><span id="L-463"><a href="#L-463"><span class="linenos">463</span></a> -</span><span id="L-464"><a href="#L-464"><span class="linenos">464</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"expressions"</span><span class="p">,</span> <span class="n">new_selections</span><span class="p">)</span> -</span><span id="L-465"><a href="#L-465"><span class="linenos">465</span></a> +</span><span id="L-443"><a href="#L-443"><span class="linenos">443</span></a> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> +</span><span id="L-444"><a href="#L-444"><span class="linenos">444</span></a> <span class="n">replace_columns</span><span class="p">[</span><span class="nb">id</span><span class="p">(</span><span class="n">table</span><span class="p">)]</span> <span class="o">=</span> <span class="n">columns</span> +</span><span id="L-445"><a href="#L-445"><span class="linenos">445</span></a> +</span><span id="L-446"><a href="#L-446"><span class="linenos">446</span></a> +</span><span id="L-447"><a href="#L-447"><span class="linenos">447</span></a><span class="k">def</span> <span class="nf">_qualify_outputs</span><span class="p">(</span><span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">):</span> +</span><span id="L-448"><a href="#L-448"><span class="linenos">448</span></a><span class="w"> </span><span class="sd">"""Ensure all output columns are aliased"""</span> +</span><span id="L-449"><a href="#L-449"><span class="linenos">449</span></a> <span class="n">new_selections</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="L-450"><a href="#L-450"><span class="linenos">450</span></a> +</span><span id="L-451"><a href="#L-451"><span class="linenos">451</span></a> <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="p">(</span><span class="n">selection</span><span class="p">,</span> <span class="n">aliased_column</span><span class="p">)</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span> +</span><span id="L-452"><a href="#L-452"><span class="linenos">452</span></a> <span class="n">itertools</span><span class="o">.</span><span class="n">zip_longest</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">selects</span><span class="p">,</span> <span class="n">scope</span><span class="o">.</span><span class="n">outer_column_list</span><span class="p">)</span> +</span><span id="L-453"><a href="#L-453"><span class="linenos">453</span></a> <span class="p">):</span> +</span><span id="L-454"><a href="#L-454"><span class="linenos">454</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">selection</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">):</span> +</span><span id="L-455"><a href="#L-455"><span class="linenos">455</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">selection</span><span class="o">.</span><span class="n">output_name</span><span class="p">:</span> +</span><span id="L-456"><a href="#L-456"><span class="linenos">456</span></a> <span class="n">selection</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="sa">f</span><span class="s2">"_col_</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">"</span><span class="p">)))</span> +</span><span id="L-457"><a href="#L-457"><span class="linenos">457</span></a> <span class="k">elif</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">selection</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Alias</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">selection</span><span class="o">.</span><span class="n">is_star</span><span class="p">:</span> +</span><span id="L-458"><a href="#L-458"><span class="linenos">458</span></a> <span class="n">selection</span> <span class="o">=</span> <span class="n">alias</span><span class="p">(</span> +</span><span id="L-459"><a href="#L-459"><span class="linenos">459</span></a> <span class="n">selection</span><span class="p">,</span> +</span><span id="L-460"><a href="#L-460"><span class="linenos">460</span></a> <span class="n">alias</span><span class="o">=</span><span class="n">selection</span><span class="o">.</span><span class="n">output_name</span> <span class="ow">or</span> <span class="sa">f</span><span class="s2">"_col_</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">"</span><span class="p">,</span> +</span><span id="L-461"><a href="#L-461"><span class="linenos">461</span></a> <span class="p">)</span> +</span><span id="L-462"><a href="#L-462"><span class="linenos">462</span></a> <span class="k">if</span> <span class="n">aliased_column</span><span class="p">:</span> +</span><span id="L-463"><a href="#L-463"><span class="linenos">463</span></a> <span class="n">selection</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">aliased_column</span><span class="p">))</span> +</span><span id="L-464"><a href="#L-464"><span class="linenos">464</span></a> +</span><span id="L-465"><a href="#L-465"><span class="linenos">465</span></a> <span class="n">new_selections</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">selection</span><span class="p">)</span> </span><span id="L-466"><a href="#L-466"><span class="linenos">466</span></a> -</span><span id="L-467"><a href="#L-467"><span class="linenos">467</span></a><span class="k">def</span> <span class="nf">quote_identifiers</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">E</span><span class="p">,</span> <span class="n">dialect</span><span class="p">:</span> <span class="n">DialectType</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> <span class="n">identify</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">True</span><span class="p">)</span> <span class="o">-></span> <span class="n">E</span><span class="p">:</span> -</span><span id="L-468"><a href="#L-468"><span class="linenos">468</span></a><span class="w"> </span><span class="sd">"""Makes sure all identifiers that need to be quoted are quoted."""</span> -</span><span id="L-469"><a href="#L-469"><span class="linenos">469</span></a> <span class="k">return</span> <span class="n">expression</span><span class="o">.</span><span class="n">transform</span><span class="p">(</span> -</span><span id="L-470"><a href="#L-470"><span class="linenos">470</span></a> <span class="n">Dialect</span><span class="o">.</span><span class="n">get_or_raise</span><span class="p">(</span><span class="n">dialect</span><span class="p">)</span><span class="o">.</span><span class="n">quote_identifier</span><span class="p">,</span> <span class="n">identify</span><span class="o">=</span><span class="n">identify</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span> -</span><span id="L-471"><a href="#L-471"><span class="linenos">471</span></a> <span class="p">)</span> -</span><span id="L-472"><a href="#L-472"><span class="linenos">472</span></a> -</span><span id="L-473"><a href="#L-473"><span class="linenos">473</span></a> -</span><span id="L-474"><a href="#L-474"><span class="linenos">474</span></a><span class="k">class</span> <span class="nc">Resolver</span><span class="p">:</span> -</span><span id="L-475"><a href="#L-475"><span class="linenos">475</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-476"><a href="#L-476"><span class="linenos">476</span></a><span class="sd"> Helper for resolving columns.</span> -</span><span id="L-477"><a href="#L-477"><span class="linenos">477</span></a> -</span><span id="L-478"><a href="#L-478"><span class="linenos">478</span></a><span class="sd"> This is a class so we can lazily load some things and easily share them across functions.</span> -</span><span id="L-479"><a href="#L-479"><span class="linenos">479</span></a><span class="sd"> """</span> +</span><span id="L-467"><a href="#L-467"><span class="linenos">467</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"expressions"</span><span class="p">,</span> <span class="n">new_selections</span><span class="p">)</span> +</span><span id="L-468"><a href="#L-468"><span class="linenos">468</span></a> +</span><span id="L-469"><a href="#L-469"><span class="linenos">469</span></a> +</span><span id="L-470"><a href="#L-470"><span class="linenos">470</span></a><span class="k">def</span> <span class="nf">quote_identifiers</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">E</span><span class="p">,</span> <span class="n">dialect</span><span class="p">:</span> <span class="n">DialectType</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> <span class="n">identify</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">True</span><span class="p">)</span> <span class="o">-></span> <span class="n">E</span><span class="p">:</span> +</span><span id="L-471"><a href="#L-471"><span class="linenos">471</span></a><span class="w"> </span><span class="sd">"""Makes sure all identifiers that need to be quoted are quoted."""</span> +</span><span id="L-472"><a href="#L-472"><span class="linenos">472</span></a> <span class="k">return</span> <span class="n">expression</span><span class="o">.</span><span class="n">transform</span><span class="p">(</span> +</span><span id="L-473"><a href="#L-473"><span class="linenos">473</span></a> <span class="n">Dialect</span><span class="o">.</span><span class="n">get_or_raise</span><span class="p">(</span><span class="n">dialect</span><span class="p">)</span><span class="o">.</span><span class="n">quote_identifier</span><span class="p">,</span> <span class="n">identify</span><span class="o">=</span><span class="n">identify</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span> +</span><span id="L-474"><a href="#L-474"><span class="linenos">474</span></a> <span class="p">)</span> +</span><span id="L-475"><a href="#L-475"><span class="linenos">475</span></a> +</span><span id="L-476"><a href="#L-476"><span class="linenos">476</span></a> +</span><span id="L-477"><a href="#L-477"><span class="linenos">477</span></a><span class="k">class</span> <span class="nc">Resolver</span><span class="p">:</span> +</span><span id="L-478"><a href="#L-478"><span class="linenos">478</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-479"><a href="#L-479"><span class="linenos">479</span></a><span class="sd"> Helper for resolving columns.</span> </span><span id="L-480"><a href="#L-480"><span class="linenos">480</span></a> -</span><span id="L-481"><a href="#L-481"><span class="linenos">481</span></a> <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">schema</span><span class="p">:</span> <span class="n">Schema</span><span class="p">,</span> <span class="n">infer_schema</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">True</span><span class="p">):</span> -</span><span id="L-482"><a href="#L-482"><span class="linenos">482</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span> <span class="o">=</span> <span class="n">scope</span> -</span><span id="L-483"><a href="#L-483"><span class="linenos">483</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span> <span class="o">=</span> <span class="n">schema</span> -</span><span id="L-484"><a href="#L-484"><span class="linenos">484</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="L-485"><a href="#L-485"><span class="linenos">485</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">str</span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="L-486"><a href="#L-486"><span class="linenos">486</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="L-487"><a href="#L-487"><span class="linenos">487</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_infer_schema</span> <span class="o">=</span> <span class="n">infer_schema</span> -</span><span id="L-488"><a href="#L-488"><span class="linenos">488</span></a> -</span><span id="L-489"><a href="#L-489"><span class="linenos">489</span></a> <span class="k">def</span> <span class="nf">get_table</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">column_name</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Identifier</span><span class="p">]:</span> -</span><span id="L-490"><a href="#L-490"><span class="linenos">490</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-491"><a href="#L-491"><span class="linenos">491</span></a><span class="sd"> Get the table for a column name.</span> -</span><span id="L-492"><a href="#L-492"><span class="linenos">492</span></a> -</span><span id="L-493"><a href="#L-493"><span class="linenos">493</span></a><span class="sd"> Args:</span> -</span><span id="L-494"><a href="#L-494"><span class="linenos">494</span></a><span class="sd"> column_name: The column name to find the table for.</span> -</span><span id="L-495"><a href="#L-495"><span class="linenos">495</span></a><span class="sd"> Returns:</span> -</span><span id="L-496"><a href="#L-496"><span class="linenos">496</span></a><span class="sd"> The table name if it can be found/inferred.</span> -</span><span id="L-497"><a href="#L-497"><span class="linenos">497</span></a><span class="sd"> """</span> -</span><span id="L-498"><a href="#L-498"><span class="linenos">498</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> -</span><span id="L-499"><a href="#L-499"><span class="linenos">499</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_unambiguous_columns</span><span class="p">(</span> -</span><span id="L-500"><a href="#L-500"><span class="linenos">500</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span> -</span><span id="L-501"><a href="#L-501"><span class="linenos">501</span></a> <span class="p">)</span> -</span><span id="L-502"><a href="#L-502"><span class="linenos">502</span></a> -</span><span id="L-503"><a href="#L-503"><span class="linenos">503</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column_name</span><span class="p">)</span> -</span><span id="L-504"><a href="#L-504"><span class="linenos">504</span></a> -</span><span id="L-505"><a href="#L-505"><span class="linenos">505</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table_name</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">_infer_schema</span><span class="p">:</span> -</span><span id="L-506"><a href="#L-506"><span class="linenos">506</span></a> <span class="n">sources_without_schema</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span> -</span><span id="L-507"><a href="#L-507"><span class="linenos">507</span></a> <span class="n">source</span> -</span><span id="L-508"><a href="#L-508"><span class="linenos">508</span></a> <span class="k">for</span> <span class="n">source</span><span class="p">,</span> <span class="n">columns</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> -</span><span id="L-509"><a href="#L-509"><span class="linenos">509</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">columns</span> <span class="ow">or</span> <span class="s2">"*"</span> <span class="ow">in</span> <span class="n">columns</span> -</span><span id="L-510"><a href="#L-510"><span class="linenos">510</span></a> <span class="p">)</span> -</span><span id="L-511"><a href="#L-511"><span class="linenos">511</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">sources_without_schema</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span> -</span><span id="L-512"><a href="#L-512"><span class="linenos">512</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="n">sources_without_schema</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> -</span><span id="L-513"><a href="#L-513"><span class="linenos">513</span></a> -</span><span id="L-514"><a href="#L-514"><span class="linenos">514</span></a> <span class="k">if</span> <span class="n">table_name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">:</span> -</span><span id="L-515"><a href="#L-515"><span class="linenos">515</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> +</span><span id="L-481"><a href="#L-481"><span class="linenos">481</span></a><span class="sd"> This is a class so we can lazily load some things and easily share them across functions.</span> +</span><span id="L-482"><a href="#L-482"><span class="linenos">482</span></a><span class="sd"> """</span> +</span><span id="L-483"><a href="#L-483"><span class="linenos">483</span></a> +</span><span id="L-484"><a href="#L-484"><span class="linenos">484</span></a> <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">schema</span><span class="p">:</span> <span class="n">Schema</span><span class="p">,</span> <span class="n">infer_schema</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">True</span><span class="p">):</span> +</span><span id="L-485"><a href="#L-485"><span class="linenos">485</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span> <span class="o">=</span> <span class="n">scope</span> +</span><span id="L-486"><a href="#L-486"><span class="linenos">486</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span> <span class="o">=</span> <span class="n">schema</span> +</span><span id="L-487"><a href="#L-487"><span class="linenos">487</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="L-488"><a href="#L-488"><span class="linenos">488</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">str</span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="L-489"><a href="#L-489"><span class="linenos">489</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="L-490"><a href="#L-490"><span class="linenos">490</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_infer_schema</span> <span class="o">=</span> <span class="n">infer_schema</span> +</span><span id="L-491"><a href="#L-491"><span class="linenos">491</span></a> +</span><span id="L-492"><a href="#L-492"><span class="linenos">492</span></a> <span class="k">def</span> <span class="nf">get_table</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">column_name</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Identifier</span><span class="p">]:</span> +</span><span id="L-493"><a href="#L-493"><span class="linenos">493</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-494"><a href="#L-494"><span class="linenos">494</span></a><span class="sd"> Get the table for a column name.</span> +</span><span id="L-495"><a href="#L-495"><span class="linenos">495</span></a> +</span><span id="L-496"><a href="#L-496"><span class="linenos">496</span></a><span class="sd"> Args:</span> +</span><span id="L-497"><a href="#L-497"><span class="linenos">497</span></a><span class="sd"> column_name: The column name to find the table for.</span> +</span><span id="L-498"><a href="#L-498"><span class="linenos">498</span></a><span class="sd"> Returns:</span> +</span><span id="L-499"><a href="#L-499"><span class="linenos">499</span></a><span class="sd"> The table name if it can be found/inferred.</span> +</span><span id="L-500"><a href="#L-500"><span class="linenos">500</span></a><span class="sd"> """</span> +</span><span id="L-501"><a href="#L-501"><span class="linenos">501</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> +</span><span id="L-502"><a href="#L-502"><span class="linenos">502</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_unambiguous_columns</span><span class="p">(</span> +</span><span id="L-503"><a href="#L-503"><span class="linenos">503</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span> +</span><span id="L-504"><a href="#L-504"><span class="linenos">504</span></a> <span class="p">)</span> +</span><span id="L-505"><a href="#L-505"><span class="linenos">505</span></a> +</span><span id="L-506"><a href="#L-506"><span class="linenos">506</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column_name</span><span class="p">)</span> +</span><span id="L-507"><a href="#L-507"><span class="linenos">507</span></a> +</span><span id="L-508"><a href="#L-508"><span class="linenos">508</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table_name</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">_infer_schema</span><span class="p">:</span> +</span><span id="L-509"><a href="#L-509"><span class="linenos">509</span></a> <span class="n">sources_without_schema</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span> +</span><span id="L-510"><a href="#L-510"><span class="linenos">510</span></a> <span class="n">source</span> +</span><span id="L-511"><a href="#L-511"><span class="linenos">511</span></a> <span class="k">for</span> <span class="n">source</span><span class="p">,</span> <span class="n">columns</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> +</span><span id="L-512"><a href="#L-512"><span class="linenos">512</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">columns</span> <span class="ow">or</span> <span class="s2">"*"</span> <span class="ow">in</span> <span class="n">columns</span> +</span><span id="L-513"><a href="#L-513"><span class="linenos">513</span></a> <span class="p">)</span> +</span><span id="L-514"><a href="#L-514"><span class="linenos">514</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">sources_without_schema</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span> +</span><span id="L-515"><a href="#L-515"><span class="linenos">515</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="n">sources_without_schema</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> </span><span id="L-516"><a href="#L-516"><span class="linenos">516</span></a> -</span><span id="L-517"><a href="#L-517"><span class="linenos">517</span></a> <span class="n">node</span><span class="p">,</span> <span class="n">_</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> -</span><span id="L-518"><a href="#L-518"><span class="linenos">518</span></a> -</span><span id="L-519"><a href="#L-519"><span class="linenos">519</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subqueryable</span><span class="p">):</span> -</span><span id="L-520"><a href="#L-520"><span class="linenos">520</span></a> <span class="k">while</span> <span class="n">node</span> <span class="ow">and</span> <span class="n">node</span><span class="o">.</span><span class="n">alias</span> <span class="o">!=</span> <span class="n">table_name</span><span class="p">:</span> -</span><span id="L-521"><a href="#L-521"><span class="linenos">521</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">parent</span> -</span><span id="L-522"><a href="#L-522"><span class="linenos">522</span></a> -</span><span id="L-523"><a href="#L-523"><span class="linenos">523</span></a> <span class="n">node_alias</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">)</span> -</span><span id="L-524"><a href="#L-524"><span class="linenos">524</span></a> <span class="k">if</span> <span class="n">node_alias</span><span class="p">:</span> -</span><span id="L-525"><a href="#L-525"><span class="linenos">525</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">node_alias</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> -</span><span id="L-526"><a href="#L-526"><span class="linenos">526</span></a> -</span><span id="L-527"><a href="#L-527"><span class="linenos">527</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> -</span><span id="L-528"><a href="#L-528"><span class="linenos">528</span></a> -</span><span id="L-529"><a href="#L-529"><span class="linenos">529</span></a> <span class="nd">@property</span> -</span><span id="L-530"><a href="#L-530"><span class="linenos">530</span></a> <span class="k">def</span> <span class="nf">all_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> -</span><span id="L-531"><a href="#L-531"><span class="linenos">531</span></a><span class="w"> </span><span class="sd">"""All available columns of all sources in this scope"""</span> -</span><span id="L-532"><a href="#L-532"><span class="linenos">532</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> -</span><span id="L-533"><a href="#L-533"><span class="linenos">533</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="o">=</span> <span class="p">{</span> -</span><span id="L-534"><a href="#L-534"><span class="linenos">534</span></a> <span class="n">column</span> <span class="k">for</span> <span class="n">columns</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span><span class="o">.</span><span class="n">values</span><span class="p">()</span> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">columns</span> -</span><span id="L-535"><a href="#L-535"><span class="linenos">535</span></a> <span class="p">}</span> -</span><span id="L-536"><a href="#L-536"><span class="linenos">536</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> -</span><span id="L-537"><a href="#L-537"><span class="linenos">537</span></a> -</span><span id="L-538"><a href="#L-538"><span class="linenos">538</span></a> <span class="k">def</span> <span class="nf">get_source_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">only_visible</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> -</span><span id="L-539"><a href="#L-539"><span class="linenos">539</span></a><span class="w"> </span><span class="sd">"""Resolve the source columns for a given source `name`"""</span> -</span><span id="L-540"><a href="#L-540"><span class="linenos">540</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> -</span><span id="L-541"><a href="#L-541"><span class="linenos">541</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown table: </span><span class="si">{</span><span class="n">name</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> -</span><span id="L-542"><a href="#L-542"><span class="linenos">542</span></a> -</span><span id="L-543"><a href="#L-543"><span class="linenos">543</span></a> <span class="n">source</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> -</span><span id="L-544"><a href="#L-544"><span class="linenos">544</span></a> -</span><span id="L-545"><a href="#L-545"><span class="linenos">545</span></a> <span class="c1"># If referencing a table, return the columns from the schema</span> -</span><span id="L-546"><a href="#L-546"><span class="linenos">546</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> -</span><span id="L-547"><a href="#L-547"><span class="linenos">547</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span><span class="o">.</span><span class="n">column_names</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">only_visible</span><span class="p">)</span> -</span><span id="L-548"><a href="#L-548"><span class="linenos">548</span></a> -</span><span id="L-549"><a href="#L-549"><span class="linenos">549</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">Scope</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Values</span><span class="p">):</span> -</span><span id="L-550"><a href="#L-550"><span class="linenos">550</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">alias_column_names</span> +</span><span id="L-517"><a href="#L-517"><span class="linenos">517</span></a> <span class="k">if</span> <span class="n">table_name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">:</span> +</span><span id="L-518"><a href="#L-518"><span class="linenos">518</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> +</span><span id="L-519"><a href="#L-519"><span class="linenos">519</span></a> +</span><span id="L-520"><a href="#L-520"><span class="linenos">520</span></a> <span class="n">node</span><span class="p">,</span> <span class="n">_</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> +</span><span id="L-521"><a href="#L-521"><span class="linenos">521</span></a> +</span><span id="L-522"><a href="#L-522"><span class="linenos">522</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subqueryable</span><span class="p">):</span> +</span><span id="L-523"><a href="#L-523"><span class="linenos">523</span></a> <span class="k">while</span> <span class="n">node</span> <span class="ow">and</span> <span class="n">node</span><span class="o">.</span><span class="n">alias</span> <span class="o">!=</span> <span class="n">table_name</span><span class="p">:</span> +</span><span id="L-524"><a href="#L-524"><span class="linenos">524</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">parent</span> +</span><span id="L-525"><a href="#L-525"><span class="linenos">525</span></a> +</span><span id="L-526"><a href="#L-526"><span class="linenos">526</span></a> <span class="n">node_alias</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">)</span> +</span><span id="L-527"><a href="#L-527"><span class="linenos">527</span></a> <span class="k">if</span> <span class="n">node_alias</span><span class="p">:</span> +</span><span id="L-528"><a href="#L-528"><span class="linenos">528</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">node_alias</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> +</span><span id="L-529"><a href="#L-529"><span class="linenos">529</span></a> +</span><span id="L-530"><a href="#L-530"><span class="linenos">530</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> +</span><span id="L-531"><a href="#L-531"><span class="linenos">531</span></a> +</span><span id="L-532"><a href="#L-532"><span class="linenos">532</span></a> <span class="nd">@property</span> +</span><span id="L-533"><a href="#L-533"><span class="linenos">533</span></a> <span class="k">def</span> <span class="nf">all_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> +</span><span id="L-534"><a href="#L-534"><span class="linenos">534</span></a><span class="w"> </span><span class="sd">"""All available columns of all sources in this scope"""</span> +</span><span id="L-535"><a href="#L-535"><span class="linenos">535</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> +</span><span id="L-536"><a href="#L-536"><span class="linenos">536</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="o">=</span> <span class="p">{</span> +</span><span id="L-537"><a href="#L-537"><span class="linenos">537</span></a> <span class="n">column</span> <span class="k">for</span> <span class="n">columns</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span><span class="o">.</span><span class="n">values</span><span class="p">()</span> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">columns</span> +</span><span id="L-538"><a href="#L-538"><span class="linenos">538</span></a> <span class="p">}</span> +</span><span id="L-539"><a href="#L-539"><span class="linenos">539</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> +</span><span id="L-540"><a href="#L-540"><span class="linenos">540</span></a> +</span><span id="L-541"><a href="#L-541"><span class="linenos">541</span></a> <span class="k">def</span> <span class="nf">get_source_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">only_visible</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> +</span><span id="L-542"><a href="#L-542"><span class="linenos">542</span></a><span class="w"> </span><span class="sd">"""Resolve the source columns for a given source `name`"""</span> +</span><span id="L-543"><a href="#L-543"><span class="linenos">543</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> +</span><span id="L-544"><a href="#L-544"><span class="linenos">544</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown table: </span><span class="si">{</span><span class="n">name</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="L-545"><a href="#L-545"><span class="linenos">545</span></a> +</span><span id="L-546"><a href="#L-546"><span class="linenos">546</span></a> <span class="n">source</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> +</span><span id="L-547"><a href="#L-547"><span class="linenos">547</span></a> +</span><span id="L-548"><a href="#L-548"><span class="linenos">548</span></a> <span class="c1"># If referencing a table, return the columns from the schema</span> +</span><span id="L-549"><a href="#L-549"><span class="linenos">549</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> +</span><span id="L-550"><a href="#L-550"><span class="linenos">550</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span><span class="o">.</span><span class="n">column_names</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">only_visible</span><span class="p">)</span> </span><span id="L-551"><a href="#L-551"><span class="linenos">551</span></a> -</span><span id="L-552"><a href="#L-552"><span class="linenos">552</span></a> <span class="c1"># Otherwise, if referencing another scope, return that scope's named selects</span> -</span><span id="L-553"><a href="#L-553"><span class="linenos">553</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">named_selects</span> +</span><span id="L-552"><a href="#L-552"><span class="linenos">552</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">Scope</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Values</span><span class="p">):</span> +</span><span id="L-553"><a href="#L-553"><span class="linenos">553</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">alias_column_names</span> </span><span id="L-554"><a href="#L-554"><span class="linenos">554</span></a> -</span><span id="L-555"><a href="#L-555"><span class="linenos">555</span></a> <span class="k">def</span> <span class="nf">_get_all_source_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> -</span><span id="L-556"><a href="#L-556"><span class="linenos">556</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> -</span><span id="L-557"><a href="#L-557"><span class="linenos">557</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="o">=</span> <span class="p">{</span> -</span><span id="L-558"><a href="#L-558"><span class="linenos">558</span></a> <span class="n">k</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">k</span><span class="p">)</span> -</span><span id="L-559"><a href="#L-559"><span class="linenos">559</span></a> <span class="k">for</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">chain</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">lateral_sources</span><span class="p">)</span> -</span><span id="L-560"><a href="#L-560"><span class="linenos">560</span></a> <span class="p">}</span> -</span><span id="L-561"><a href="#L-561"><span class="linenos">561</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> -</span><span id="L-562"><a href="#L-562"><span class="linenos">562</span></a> -</span><span id="L-563"><a href="#L-563"><span class="linenos">563</span></a> <span class="k">def</span> <span class="nf">_get_unambiguous_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">source_columns</span><span class="p">):</span> -</span><span id="L-564"><a href="#L-564"><span class="linenos">564</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-565"><a href="#L-565"><span class="linenos">565</span></a><span class="sd"> Find all the unambiguous columns in sources.</span> -</span><span id="L-566"><a href="#L-566"><span class="linenos">566</span></a> -</span><span id="L-567"><a href="#L-567"><span class="linenos">567</span></a><span class="sd"> Args:</span> -</span><span id="L-568"><a href="#L-568"><span class="linenos">568</span></a><span class="sd"> source_columns (dict): Mapping of names to source columns</span> -</span><span id="L-569"><a href="#L-569"><span class="linenos">569</span></a><span class="sd"> Returns:</span> -</span><span id="L-570"><a href="#L-570"><span class="linenos">570</span></a><span class="sd"> dict: Mapping of column name to source name</span> -</span><span id="L-571"><a href="#L-571"><span class="linenos">571</span></a><span class="sd"> """</span> -</span><span id="L-572"><a href="#L-572"><span class="linenos">572</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">source_columns</span><span class="p">:</span> -</span><span id="L-573"><a href="#L-573"><span class="linenos">573</span></a> <span class="k">return</span> <span class="p">{}</span> -</span><span id="L-574"><a href="#L-574"><span class="linenos">574</span></a> -</span><span id="L-575"><a href="#L-575"><span class="linenos">575</span></a> <span class="n">source_columns</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">source_columns</span><span class="o">.</span><span class="n">items</span><span class="p">())</span> -</span><span id="L-576"><a href="#L-576"><span class="linenos">576</span></a> -</span><span id="L-577"><a href="#L-577"><span class="linenos">577</span></a> <span class="n">first_table</span><span class="p">,</span> <span class="n">first_columns</span> <span class="o">=</span> <span class="n">source_columns</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> -</span><span id="L-578"><a href="#L-578"><span class="linenos">578</span></a> <span class="n">unambiguous_columns</span> <span class="o">=</span> <span class="p">{</span><span class="n">col</span><span class="p">:</span> <span class="n">first_table</span> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_find_unique_columns</span><span class="p">(</span><span class="n">first_columns</span><span class="p">)}</span> -</span><span id="L-579"><a href="#L-579"><span class="linenos">579</span></a> <span class="n">all_columns</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">unambiguous_columns</span><span class="p">)</span> -</span><span id="L-580"><a href="#L-580"><span class="linenos">580</span></a> -</span><span id="L-581"><a href="#L-581"><span class="linenos">581</span></a> <span class="k">for</span> <span class="n">table</span><span class="p">,</span> <span class="n">columns</span> <span class="ow">in</span> <span class="n">source_columns</span><span class="p">[</span><span class="mi">1</span><span class="p">:]:</span> -</span><span id="L-582"><a href="#L-582"><span class="linenos">582</span></a> <span class="n">unique</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_find_unique_columns</span><span class="p">(</span><span class="n">columns</span><span class="p">)</span> -</span><span id="L-583"><a href="#L-583"><span class="linenos">583</span></a> <span class="n">ambiguous</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">all_columns</span><span class="p">)</span><span class="o">.</span><span class="n">intersection</span><span class="p">(</span><span class="n">unique</span><span class="p">)</span> -</span><span id="L-584"><a href="#L-584"><span class="linenos">584</span></a> <span class="n">all_columns</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">columns</span><span class="p">)</span> -</span><span id="L-585"><a href="#L-585"><span class="linenos">585</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">ambiguous</span><span class="p">:</span> -</span><span id="L-586"><a href="#L-586"><span class="linenos">586</span></a> <span class="n">unambiguous_columns</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> -</span><span id="L-587"><a href="#L-587"><span class="linenos">587</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">unique</span><span class="o">.</span><span class="n">difference</span><span class="p">(</span><span class="n">ambiguous</span><span class="p">):</span> -</span><span id="L-588"><a href="#L-588"><span class="linenos">588</span></a> <span class="n">unambiguous_columns</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">table</span> -</span><span id="L-589"><a href="#L-589"><span class="linenos">589</span></a> -</span><span id="L-590"><a href="#L-590"><span class="linenos">590</span></a> <span class="k">return</span> <span class="n">unambiguous_columns</span> -</span><span id="L-591"><a href="#L-591"><span class="linenos">591</span></a> -</span><span id="L-592"><a href="#L-592"><span class="linenos">592</span></a> <span class="nd">@staticmethod</span> -</span><span id="L-593"><a href="#L-593"><span class="linenos">593</span></a> <span class="k">def</span> <span class="nf">_find_unique_columns</span><span class="p">(</span><span class="n">columns</span><span class="p">):</span> -</span><span id="L-594"><a href="#L-594"><span class="linenos">594</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-595"><a href="#L-595"><span class="linenos">595</span></a><span class="sd"> Find the unique columns in a list of columns.</span> -</span><span id="L-596"><a href="#L-596"><span class="linenos">596</span></a> -</span><span id="L-597"><a href="#L-597"><span class="linenos">597</span></a><span class="sd"> Example:</span> -</span><span id="L-598"><a href="#L-598"><span class="linenos">598</span></a><span class="sd"> >>> sorted(Resolver._find_unique_columns(["a", "b", "b", "c"]))</span> -</span><span id="L-599"><a href="#L-599"><span class="linenos">599</span></a><span class="sd"> ['a', 'c']</span> -</span><span id="L-600"><a href="#L-600"><span class="linenos">600</span></a> -</span><span id="L-601"><a href="#L-601"><span class="linenos">601</span></a><span class="sd"> This is necessary because duplicate column names are ambiguous.</span> -</span><span id="L-602"><a href="#L-602"><span class="linenos">602</span></a><span class="sd"> """</span> -</span><span id="L-603"><a href="#L-603"><span class="linenos">603</span></a> <span class="n">counts</span> <span class="o">=</span> <span class="p">{}</span> -</span><span id="L-604"><a href="#L-604"><span class="linenos">604</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span> -</span><span id="L-605"><a href="#L-605"><span class="linenos">605</span></a> <span class="n">counts</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">counts</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span> <span class="o">+</span> <span class="mi">1</span> -</span><span id="L-606"><a href="#L-606"><span class="linenos">606</span></a> <span class="k">return</span> <span class="p">{</span><span class="n">column</span> <span class="k">for</span> <span class="n">column</span><span class="p">,</span> <span class="n">count</span> <span class="ow">in</span> <span class="n">counts</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> <span class="k">if</span> <span class="n">count</span> <span class="o">==</span> <span class="mi">1</span><span class="p">}</span> +</span><span id="L-555"><a href="#L-555"><span class="linenos">555</span></a> <span class="c1"># Otherwise, if referencing another scope, return that scope's named selects</span> +</span><span id="L-556"><a href="#L-556"><span class="linenos">556</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">named_selects</span> +</span><span id="L-557"><a href="#L-557"><span class="linenos">557</span></a> +</span><span id="L-558"><a href="#L-558"><span class="linenos">558</span></a> <span class="k">def</span> <span class="nf">_get_all_source_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> +</span><span id="L-559"><a href="#L-559"><span class="linenos">559</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> +</span><span id="L-560"><a href="#L-560"><span class="linenos">560</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="o">=</span> <span class="p">{</span> +</span><span id="L-561"><a href="#L-561"><span class="linenos">561</span></a> <span class="n">k</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">k</span><span class="p">)</span> +</span><span id="L-562"><a href="#L-562"><span class="linenos">562</span></a> <span class="k">for</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">chain</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">lateral_sources</span><span class="p">)</span> +</span><span id="L-563"><a href="#L-563"><span class="linenos">563</span></a> <span class="p">}</span> +</span><span id="L-564"><a href="#L-564"><span class="linenos">564</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> +</span><span id="L-565"><a href="#L-565"><span class="linenos">565</span></a> +</span><span id="L-566"><a href="#L-566"><span class="linenos">566</span></a> <span class="k">def</span> <span class="nf">_get_unambiguous_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">source_columns</span><span class="p">):</span> +</span><span id="L-567"><a href="#L-567"><span class="linenos">567</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-568"><a href="#L-568"><span class="linenos">568</span></a><span class="sd"> Find all the unambiguous columns in sources.</span> +</span><span id="L-569"><a href="#L-569"><span class="linenos">569</span></a> +</span><span id="L-570"><a href="#L-570"><span class="linenos">570</span></a><span class="sd"> Args:</span> +</span><span id="L-571"><a href="#L-571"><span class="linenos">571</span></a><span class="sd"> source_columns (dict): Mapping of names to source columns</span> +</span><span id="L-572"><a href="#L-572"><span class="linenos">572</span></a><span class="sd"> Returns:</span> +</span><span id="L-573"><a href="#L-573"><span class="linenos">573</span></a><span class="sd"> dict: Mapping of column name to source name</span> +</span><span id="L-574"><a href="#L-574"><span class="linenos">574</span></a><span class="sd"> """</span> +</span><span id="L-575"><a href="#L-575"><span class="linenos">575</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">source_columns</span><span class="p">:</span> +</span><span id="L-576"><a href="#L-576"><span class="linenos">576</span></a> <span class="k">return</span> <span class="p">{}</span> +</span><span id="L-577"><a href="#L-577"><span class="linenos">577</span></a> +</span><span id="L-578"><a href="#L-578"><span class="linenos">578</span></a> <span class="n">source_columns</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">source_columns</span><span class="o">.</span><span class="n">items</span><span class="p">())</span> +</span><span id="L-579"><a href="#L-579"><span class="linenos">579</span></a> +</span><span id="L-580"><a href="#L-580"><span class="linenos">580</span></a> <span class="n">first_table</span><span class="p">,</span> <span class="n">first_columns</span> <span class="o">=</span> <span class="n">source_columns</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> +</span><span id="L-581"><a href="#L-581"><span class="linenos">581</span></a> <span class="n">unambiguous_columns</span> <span class="o">=</span> <span class="p">{</span><span class="n">col</span><span class="p">:</span> <span class="n">first_table</span> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_find_unique_columns</span><span class="p">(</span><span class="n">first_columns</span><span class="p">)}</span> +</span><span id="L-582"><a href="#L-582"><span class="linenos">582</span></a> <span class="n">all_columns</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">unambiguous_columns</span><span class="p">)</span> +</span><span id="L-583"><a href="#L-583"><span class="linenos">583</span></a> +</span><span id="L-584"><a href="#L-584"><span class="linenos">584</span></a> <span class="k">for</span> <span class="n">table</span><span class="p">,</span> <span class="n">columns</span> <span class="ow">in</span> <span class="n">source_columns</span><span class="p">[</span><span class="mi">1</span><span class="p">:]:</span> +</span><span id="L-585"><a href="#L-585"><span class="linenos">585</span></a> <span class="n">unique</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_find_unique_columns</span><span class="p">(</span><span class="n">columns</span><span class="p">)</span> +</span><span id="L-586"><a href="#L-586"><span class="linenos">586</span></a> <span class="n">ambiguous</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">all_columns</span><span class="p">)</span><span class="o">.</span><span class="n">intersection</span><span class="p">(</span><span class="n">unique</span><span class="p">)</span> +</span><span id="L-587"><a href="#L-587"><span class="linenos">587</span></a> <span class="n">all_columns</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">columns</span><span class="p">)</span> +</span><span id="L-588"><a href="#L-588"><span class="linenos">588</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">ambiguous</span><span class="p">:</span> +</span><span id="L-589"><a href="#L-589"><span class="linenos">589</span></a> <span class="n">unambiguous_columns</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> +</span><span id="L-590"><a href="#L-590"><span class="linenos">590</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">unique</span><span class="o">.</span><span class="n">difference</span><span class="p">(</span><span class="n">ambiguous</span><span class="p">):</span> +</span><span id="L-591"><a href="#L-591"><span class="linenos">591</span></a> <span class="n">unambiguous_columns</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">table</span> +</span><span id="L-592"><a href="#L-592"><span class="linenos">592</span></a> +</span><span id="L-593"><a href="#L-593"><span class="linenos">593</span></a> <span class="k">return</span> <span class="n">unambiguous_columns</span> +</span><span id="L-594"><a href="#L-594"><span class="linenos">594</span></a> +</span><span id="L-595"><a href="#L-595"><span class="linenos">595</span></a> <span class="nd">@staticmethod</span> +</span><span id="L-596"><a href="#L-596"><span class="linenos">596</span></a> <span class="k">def</span> <span class="nf">_find_unique_columns</span><span class="p">(</span><span class="n">columns</span><span class="p">):</span> +</span><span id="L-597"><a href="#L-597"><span class="linenos">597</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-598"><a href="#L-598"><span class="linenos">598</span></a><span class="sd"> Find the unique columns in a list of columns.</span> +</span><span id="L-599"><a href="#L-599"><span class="linenos">599</span></a> +</span><span id="L-600"><a href="#L-600"><span class="linenos">600</span></a><span class="sd"> Example:</span> +</span><span id="L-601"><a href="#L-601"><span class="linenos">601</span></a><span class="sd"> >>> sorted(Resolver._find_unique_columns(["a", "b", "b", "c"]))</span> +</span><span id="L-602"><a href="#L-602"><span class="linenos">602</span></a><span class="sd"> ['a', 'c']</span> +</span><span id="L-603"><a href="#L-603"><span class="linenos">603</span></a> +</span><span id="L-604"><a href="#L-604"><span class="linenos">604</span></a><span class="sd"> This is necessary because duplicate column names are ambiguous.</span> +</span><span id="L-605"><a href="#L-605"><span class="linenos">605</span></a><span class="sd"> """</span> +</span><span id="L-606"><a href="#L-606"><span class="linenos">606</span></a> <span class="n">counts</span> <span class="o">=</span> <span class="p">{}</span> +</span><span id="L-607"><a href="#L-607"><span class="linenos">607</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span> +</span><span id="L-608"><a href="#L-608"><span class="linenos">608</span></a> <span class="n">counts</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">counts</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span> <span class="o">+</span> <span class="mi">1</span> +</span><span id="L-609"><a href="#L-609"><span class="linenos">609</span></a> <span class="k">return</span> <span class="p">{</span><span class="n">column</span> <span class="k">for</span> <span class="n">column</span><span class="p">,</span> <span class="n">count</span> <span class="ow">in</span> <span class="n">counts</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> <span class="k">if</span> <span class="n">count</span> <span class="o">==</span> <span class="mi">1</span><span class="p">}</span> </span></pre></div> @@ -724,37 +727,38 @@ </span><span id="qualify_columns-30"><a href="#qualify_columns-30"><span class="linenos">30</span></a><span class="sd"> 'SELECT tbl.col AS col FROM tbl'</span> </span><span id="qualify_columns-31"><a href="#qualify_columns-31"><span class="linenos">31</span></a> </span><span id="qualify_columns-32"><a href="#qualify_columns-32"><span class="linenos">32</span></a><span class="sd"> Args:</span> -</span><span id="qualify_columns-33"><a href="#qualify_columns-33"><span class="linenos">33</span></a><span class="sd"> expression: expression to qualify</span> -</span><span id="qualify_columns-34"><a href="#qualify_columns-34"><span class="linenos">34</span></a><span class="sd"> schema: Database schema</span> -</span><span id="qualify_columns-35"><a href="#qualify_columns-35"><span class="linenos">35</span></a><span class="sd"> expand_alias_refs: whether or not to expand references to aliases</span> -</span><span id="qualify_columns-36"><a href="#qualify_columns-36"><span class="linenos">36</span></a><span class="sd"> infer_schema: whether or not to infer the schema if missing</span> -</span><span id="qualify_columns-37"><a href="#qualify_columns-37"><span class="linenos">37</span></a><span class="sd"> Returns:</span> -</span><span id="qualify_columns-38"><a href="#qualify_columns-38"><span class="linenos">38</span></a><span class="sd"> sqlglot.Expression: qualified expression</span> -</span><span id="qualify_columns-39"><a href="#qualify_columns-39"><span class="linenos">39</span></a><span class="sd"> """</span> -</span><span id="qualify_columns-40"><a href="#qualify_columns-40"><span class="linenos">40</span></a> <span class="n">schema</span> <span class="o">=</span> <span class="n">ensure_schema</span><span class="p">(</span><span class="n">schema</span><span class="p">)</span> -</span><span id="qualify_columns-41"><a href="#qualify_columns-41"><span class="linenos">41</span></a> <span class="n">infer_schema</span> <span class="o">=</span> <span class="n">schema</span><span class="o">.</span><span class="n">empty</span> <span class="k">if</span> <span class="n">infer_schema</span> <span class="ow">is</span> <span class="kc">None</span> <span class="k">else</span> <span class="n">infer_schema</span> -</span><span id="qualify_columns-42"><a href="#qualify_columns-42"><span class="linenos">42</span></a> -</span><span id="qualify_columns-43"><a href="#qualify_columns-43"><span class="linenos">43</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="qualify_columns-44"><a href="#qualify_columns-44"><span class="linenos">44</span></a> <span class="n">resolver</span> <span class="o">=</span> <span class="n">Resolver</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">schema</span><span class="p">,</span> <span class="n">infer_schema</span><span class="o">=</span><span class="n">infer_schema</span><span class="p">)</span> -</span><span id="qualify_columns-45"><a href="#qualify_columns-45"><span class="linenos">45</span></a> <span class="n">_pop_table_column_aliases</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">ctes</span><span class="p">)</span> -</span><span id="qualify_columns-46"><a href="#qualify_columns-46"><span class="linenos">46</span></a> <span class="n">_pop_table_column_aliases</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">derived_tables</span><span class="p">)</span> -</span><span id="qualify_columns-47"><a href="#qualify_columns-47"><span class="linenos">47</span></a> <span class="n">using_column_tables</span> <span class="o">=</span> <span class="n">_expand_using</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> -</span><span id="qualify_columns-48"><a href="#qualify_columns-48"><span class="linenos">48</span></a> -</span><span id="qualify_columns-49"><a href="#qualify_columns-49"><span class="linenos">49</span></a> <span class="k">if</span> <span class="n">schema</span><span class="o">.</span><span class="n">empty</span> <span class="ow">and</span> <span class="n">expand_alias_refs</span><span class="p">:</span> -</span><span id="qualify_columns-50"><a href="#qualify_columns-50"><span class="linenos">50</span></a> <span class="n">_expand_alias_refs</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> -</span><span id="qualify_columns-51"><a href="#qualify_columns-51"><span class="linenos">51</span></a> -</span><span id="qualify_columns-52"><a href="#qualify_columns-52"><span class="linenos">52</span></a> <span class="n">_qualify_columns</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> -</span><span id="qualify_columns-53"><a href="#qualify_columns-53"><span class="linenos">53</span></a> -</span><span id="qualify_columns-54"><a href="#qualify_columns-54"><span class="linenos">54</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">schema</span><span class="o">.</span><span class="n">empty</span> <span class="ow">and</span> <span class="n">expand_alias_refs</span><span class="p">:</span> -</span><span id="qualify_columns-55"><a href="#qualify_columns-55"><span class="linenos">55</span></a> <span class="n">_expand_alias_refs</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> -</span><span id="qualify_columns-56"><a href="#qualify_columns-56"><span class="linenos">56</span></a> -</span><span id="qualify_columns-57"><a href="#qualify_columns-57"><span class="linenos">57</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">UDTF</span><span class="p">):</span> -</span><span id="qualify_columns-58"><a href="#qualify_columns-58"><span class="linenos">58</span></a> <span class="n">_expand_stars</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">,</span> <span class="n">using_column_tables</span><span class="p">)</span> -</span><span id="qualify_columns-59"><a href="#qualify_columns-59"><span class="linenos">59</span></a> <span class="n">_qualify_outputs</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> -</span><span id="qualify_columns-60"><a href="#qualify_columns-60"><span class="linenos">60</span></a> <span class="n">_expand_group_by</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> -</span><span id="qualify_columns-61"><a href="#qualify_columns-61"><span class="linenos">61</span></a> <span class="n">_expand_order_by</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> -</span><span id="qualify_columns-62"><a href="#qualify_columns-62"><span class="linenos">62</span></a> -</span><span id="qualify_columns-63"><a href="#qualify_columns-63"><span class="linenos">63</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="qualify_columns-33"><a href="#qualify_columns-33"><span class="linenos">33</span></a><span class="sd"> expression: Expression to qualify.</span> +</span><span id="qualify_columns-34"><a href="#qualify_columns-34"><span class="linenos">34</span></a><span class="sd"> schema: Database schema.</span> +</span><span id="qualify_columns-35"><a href="#qualify_columns-35"><span class="linenos">35</span></a><span class="sd"> expand_alias_refs: Whether or not to expand references to aliases.</span> +</span><span id="qualify_columns-36"><a href="#qualify_columns-36"><span class="linenos">36</span></a><span class="sd"> infer_schema: Whether or not to infer the schema if missing.</span> +</span><span id="qualify_columns-37"><a href="#qualify_columns-37"><span class="linenos">37</span></a> +</span><span id="qualify_columns-38"><a href="#qualify_columns-38"><span class="linenos">38</span></a><span class="sd"> Returns:</span> +</span><span id="qualify_columns-39"><a href="#qualify_columns-39"><span class="linenos">39</span></a><span class="sd"> The qualified expression.</span> +</span><span id="qualify_columns-40"><a href="#qualify_columns-40"><span class="linenos">40</span></a><span class="sd"> """</span> +</span><span id="qualify_columns-41"><a href="#qualify_columns-41"><span class="linenos">41</span></a> <span class="n">schema</span> <span class="o">=</span> <span class="n">ensure_schema</span><span class="p">(</span><span class="n">schema</span><span class="p">)</span> +</span><span id="qualify_columns-42"><a href="#qualify_columns-42"><span class="linenos">42</span></a> <span class="n">infer_schema</span> <span class="o">=</span> <span class="n">schema</span><span class="o">.</span><span class="n">empty</span> <span class="k">if</span> <span class="n">infer_schema</span> <span class="ow">is</span> <span class="kc">None</span> <span class="k">else</span> <span class="n">infer_schema</span> +</span><span id="qualify_columns-43"><a href="#qualify_columns-43"><span class="linenos">43</span></a> +</span><span id="qualify_columns-44"><a href="#qualify_columns-44"><span class="linenos">44</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="qualify_columns-45"><a href="#qualify_columns-45"><span class="linenos">45</span></a> <span class="n">resolver</span> <span class="o">=</span> <span class="n">Resolver</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">schema</span><span class="p">,</span> <span class="n">infer_schema</span><span class="o">=</span><span class="n">infer_schema</span><span class="p">)</span> +</span><span id="qualify_columns-46"><a href="#qualify_columns-46"><span class="linenos">46</span></a> <span class="n">_pop_table_column_aliases</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">ctes</span><span class="p">)</span> +</span><span id="qualify_columns-47"><a href="#qualify_columns-47"><span class="linenos">47</span></a> <span class="n">_pop_table_column_aliases</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">derived_tables</span><span class="p">)</span> +</span><span id="qualify_columns-48"><a href="#qualify_columns-48"><span class="linenos">48</span></a> <span class="n">using_column_tables</span> <span class="o">=</span> <span class="n">_expand_using</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> +</span><span id="qualify_columns-49"><a href="#qualify_columns-49"><span class="linenos">49</span></a> +</span><span id="qualify_columns-50"><a href="#qualify_columns-50"><span class="linenos">50</span></a> <span class="k">if</span> <span class="n">schema</span><span class="o">.</span><span class="n">empty</span> <span class="ow">and</span> <span class="n">expand_alias_refs</span><span class="p">:</span> +</span><span id="qualify_columns-51"><a href="#qualify_columns-51"><span class="linenos">51</span></a> <span class="n">_expand_alias_refs</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> +</span><span id="qualify_columns-52"><a href="#qualify_columns-52"><span class="linenos">52</span></a> +</span><span id="qualify_columns-53"><a href="#qualify_columns-53"><span class="linenos">53</span></a> <span class="n">_qualify_columns</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> +</span><span id="qualify_columns-54"><a href="#qualify_columns-54"><span class="linenos">54</span></a> +</span><span id="qualify_columns-55"><a href="#qualify_columns-55"><span class="linenos">55</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">schema</span><span class="o">.</span><span class="n">empty</span> <span class="ow">and</span> <span class="n">expand_alias_refs</span><span class="p">:</span> +</span><span id="qualify_columns-56"><a href="#qualify_columns-56"><span class="linenos">56</span></a> <span class="n">_expand_alias_refs</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> +</span><span id="qualify_columns-57"><a href="#qualify_columns-57"><span class="linenos">57</span></a> +</span><span id="qualify_columns-58"><a href="#qualify_columns-58"><span class="linenos">58</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">UDTF</span><span class="p">):</span> +</span><span id="qualify_columns-59"><a href="#qualify_columns-59"><span class="linenos">59</span></a> <span class="n">_expand_stars</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">,</span> <span class="n">using_column_tables</span><span class="p">)</span> +</span><span id="qualify_columns-60"><a href="#qualify_columns-60"><span class="linenos">60</span></a> <span class="n">_qualify_outputs</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> +</span><span id="qualify_columns-61"><a href="#qualify_columns-61"><span class="linenos">61</span></a> <span class="n">_expand_group_by</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> +</span><span id="qualify_columns-62"><a href="#qualify_columns-62"><span class="linenos">62</span></a> <span class="n">_expand_order_by</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> +</span><span id="qualify_columns-63"><a href="#qualify_columns-63"><span class="linenos">63</span></a> +</span><span id="qualify_columns-64"><a href="#qualify_columns-64"><span class="linenos">64</span></a> <span class="k">return</span> <span class="n">expression</span> </span></pre></div> @@ -776,16 +780,16 @@ <h6 id="arguments">Arguments:</h6> <ul> -<li><strong>expression:</strong> expression to qualify</li> -<li><strong>schema:</strong> Database schema</li> -<li><strong>expand_alias_refs:</strong> whether or not to expand references to aliases</li> -<li><strong>infer_schema:</strong> whether or not to infer the schema if missing</li> +<li><strong>expression:</strong> Expression to qualify.</li> +<li><strong>schema:</strong> Database schema.</li> +<li><strong>expand_alias_refs:</strong> Whether or not to expand references to aliases.</li> +<li><strong>infer_schema:</strong> Whether or not to infer the schema if missing.</li> </ul> <h6 id="returns">Returns:</h6> <blockquote> - <p>sqlglot.Expression: qualified expression</p> + <p>The qualified expression.</p> </blockquote> </div> @@ -802,21 +806,21 @@ </div> <a class="headerlink" href="#validate_qualify_columns"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="validate_qualify_columns-66"><a href="#validate_qualify_columns-66"><span class="linenos">66</span></a><span class="k">def</span> <span class="nf">validate_qualify_columns</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">E</span><span class="p">)</span> <span class="o">-></span> <span class="n">E</span><span class="p">:</span> -</span><span id="validate_qualify_columns-67"><a href="#validate_qualify_columns-67"><span class="linenos">67</span></a><span class="w"> </span><span class="sd">"""Raise an `OptimizeError` if any columns aren't qualified"""</span> -</span><span id="validate_qualify_columns-68"><a href="#validate_qualify_columns-68"><span class="linenos">68</span></a> <span class="n">unqualified_columns</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="validate_qualify_columns-69"><a href="#validate_qualify_columns-69"><span class="linenos">69</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="validate_qualify_columns-70"><a href="#validate_qualify_columns-70"><span class="linenos">70</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">):</span> -</span><span id="validate_qualify_columns-71"><a href="#validate_qualify_columns-71"><span class="linenos">71</span></a> <span class="n">unqualified_columns</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">unqualified_columns</span><span class="p">)</span> -</span><span id="validate_qualify_columns-72"><a href="#validate_qualify_columns-72"><span class="linenos">72</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">external_columns</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">scope</span><span class="o">.</span><span class="n">is_correlated_subquery</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">scope</span><span class="o">.</span><span class="n">pivots</span><span class="p">:</span> -</span><span id="validate_qualify_columns-73"><a href="#validate_qualify_columns-73"><span class="linenos">73</span></a> <span class="n">column</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">external_columns</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> -</span><span id="validate_qualify_columns-74"><a href="#validate_qualify_columns-74"><span class="linenos">74</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span> -</span><span id="validate_qualify_columns-75"><a href="#validate_qualify_columns-75"><span class="linenos">75</span></a> <span class="sa">f</span><span class="s2">"""Column '</span><span class="si">{</span><span class="n">column</span><span class="si">}</span><span class="s2">' could not be resolved</span><span class="si">{</span><span class="sa">f</span><span class="s2">" for table: '</span><span class="si">{</span><span class="n">column</span><span class="o">.</span><span class="n">table</span><span class="si">}</span><span class="s2">'"</span><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="n">column</span><span class="o">.</span><span class="n">table</span><span class="w"> </span><span class="k">else</span><span class="w"> </span><span class="s1">''</span><span class="si">}</span><span class="s2">"""</span> -</span><span id="validate_qualify_columns-76"><a href="#validate_qualify_columns-76"><span class="linenos">76</span></a> <span class="p">)</span> -</span><span id="validate_qualify_columns-77"><a href="#validate_qualify_columns-77"><span class="linenos">77</span></a> -</span><span id="validate_qualify_columns-78"><a href="#validate_qualify_columns-78"><span class="linenos">78</span></a> <span class="k">if</span> <span class="n">unqualified_columns</span><span class="p">:</span> -</span><span id="validate_qualify_columns-79"><a href="#validate_qualify_columns-79"><span class="linenos">79</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Ambiguous columns: </span><span class="si">{</span><span class="n">unqualified_columns</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> -</span><span id="validate_qualify_columns-80"><a href="#validate_qualify_columns-80"><span class="linenos">80</span></a> <span class="k">return</span> <span class="n">expression</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="validate_qualify_columns-67"><a href="#validate_qualify_columns-67"><span class="linenos">67</span></a><span class="k">def</span> <span class="nf">validate_qualify_columns</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">E</span><span class="p">)</span> <span class="o">-></span> <span class="n">E</span><span class="p">:</span> +</span><span id="validate_qualify_columns-68"><a href="#validate_qualify_columns-68"><span class="linenos">68</span></a><span class="w"> </span><span class="sd">"""Raise an `OptimizeError` if any columns aren't qualified"""</span> +</span><span id="validate_qualify_columns-69"><a href="#validate_qualify_columns-69"><span class="linenos">69</span></a> <span class="n">unqualified_columns</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="validate_qualify_columns-70"><a href="#validate_qualify_columns-70"><span class="linenos">70</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="validate_qualify_columns-71"><a href="#validate_qualify_columns-71"><span class="linenos">71</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">):</span> +</span><span id="validate_qualify_columns-72"><a href="#validate_qualify_columns-72"><span class="linenos">72</span></a> <span class="n">unqualified_columns</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">unqualified_columns</span><span class="p">)</span> +</span><span id="validate_qualify_columns-73"><a href="#validate_qualify_columns-73"><span class="linenos">73</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">external_columns</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">scope</span><span class="o">.</span><span class="n">is_correlated_subquery</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">scope</span><span class="o">.</span><span class="n">pivots</span><span class="p">:</span> +</span><span id="validate_qualify_columns-74"><a href="#validate_qualify_columns-74"><span class="linenos">74</span></a> <span class="n">column</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">external_columns</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> +</span><span id="validate_qualify_columns-75"><a href="#validate_qualify_columns-75"><span class="linenos">75</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span> +</span><span id="validate_qualify_columns-76"><a href="#validate_qualify_columns-76"><span class="linenos">76</span></a> <span class="sa">f</span><span class="s2">"""Column '</span><span class="si">{</span><span class="n">column</span><span class="si">}</span><span class="s2">' could not be resolved</span><span class="si">{</span><span class="sa">f</span><span class="s2">" for table: '</span><span class="si">{</span><span class="n">column</span><span class="o">.</span><span class="n">table</span><span class="si">}</span><span class="s2">'"</span><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="n">column</span><span class="o">.</span><span class="n">table</span><span class="w"> </span><span class="k">else</span><span class="w"> </span><span class="s1">''</span><span class="si">}</span><span class="s2">"""</span> +</span><span id="validate_qualify_columns-77"><a href="#validate_qualify_columns-77"><span class="linenos">77</span></a> <span class="p">)</span> +</span><span id="validate_qualify_columns-78"><a href="#validate_qualify_columns-78"><span class="linenos">78</span></a> +</span><span id="validate_qualify_columns-79"><a href="#validate_qualify_columns-79"><span class="linenos">79</span></a> <span class="k">if</span> <span class="n">unqualified_columns</span><span class="p">:</span> +</span><span id="validate_qualify_columns-80"><a href="#validate_qualify_columns-80"><span class="linenos">80</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Ambiguous columns: </span><span class="si">{</span><span class="n">unqualified_columns</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="validate_qualify_columns-81"><a href="#validate_qualify_columns-81"><span class="linenos">81</span></a> <span class="k">return</span> <span class="n">expression</span> </span></pre></div> @@ -836,11 +840,11 @@ </div> <a class="headerlink" href="#quote_identifiers"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="quote_identifiers-468"><a href="#quote_identifiers-468"><span class="linenos">468</span></a><span class="k">def</span> <span class="nf">quote_identifiers</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">E</span><span class="p">,</span> <span class="n">dialect</span><span class="p">:</span> <span class="n">DialectType</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> <span class="n">identify</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">True</span><span class="p">)</span> <span class="o">-></span> <span class="n">E</span><span class="p">:</span> -</span><span id="quote_identifiers-469"><a href="#quote_identifiers-469"><span class="linenos">469</span></a><span class="w"> </span><span class="sd">"""Makes sure all identifiers that need to be quoted are quoted."""</span> -</span><span id="quote_identifiers-470"><a href="#quote_identifiers-470"><span class="linenos">470</span></a> <span class="k">return</span> <span class="n">expression</span><span class="o">.</span><span class="n">transform</span><span class="p">(</span> -</span><span id="quote_identifiers-471"><a href="#quote_identifiers-471"><span class="linenos">471</span></a> <span class="n">Dialect</span><span class="o">.</span><span class="n">get_or_raise</span><span class="p">(</span><span class="n">dialect</span><span class="p">)</span><span class="o">.</span><span class="n">quote_identifier</span><span class="p">,</span> <span class="n">identify</span><span class="o">=</span><span class="n">identify</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span> -</span><span id="quote_identifiers-472"><a href="#quote_identifiers-472"><span class="linenos">472</span></a> <span class="p">)</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="quote_identifiers-471"><a href="#quote_identifiers-471"><span class="linenos">471</span></a><span class="k">def</span> <span class="nf">quote_identifiers</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">E</span><span class="p">,</span> <span class="n">dialect</span><span class="p">:</span> <span class="n">DialectType</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> <span class="n">identify</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">True</span><span class="p">)</span> <span class="o">-></span> <span class="n">E</span><span class="p">:</span> +</span><span id="quote_identifiers-472"><a href="#quote_identifiers-472"><span class="linenos">472</span></a><span class="w"> </span><span class="sd">"""Makes sure all identifiers that need to be quoted are quoted."""</span> +</span><span id="quote_identifiers-473"><a href="#quote_identifiers-473"><span class="linenos">473</span></a> <span class="k">return</span> <span class="n">expression</span><span class="o">.</span><span class="n">transform</span><span class="p">(</span> +</span><span id="quote_identifiers-474"><a href="#quote_identifiers-474"><span class="linenos">474</span></a> <span class="n">Dialect</span><span class="o">.</span><span class="n">get_or_raise</span><span class="p">(</span><span class="n">dialect</span><span class="p">)</span><span class="o">.</span><span class="n">quote_identifier</span><span class="p">,</span> <span class="n">identify</span><span class="o">=</span><span class="n">identify</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span> +</span><span id="quote_identifiers-475"><a href="#quote_identifiers-475"><span class="linenos">475</span></a> <span class="p">)</span> </span></pre></div> @@ -860,139 +864,139 @@ </div> <a class="headerlink" href="#Resolver"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="Resolver-475"><a href="#Resolver-475"><span class="linenos">475</span></a><span class="k">class</span> <span class="nc">Resolver</span><span class="p">:</span> -</span><span id="Resolver-476"><a href="#Resolver-476"><span class="linenos">476</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="Resolver-477"><a href="#Resolver-477"><span class="linenos">477</span></a><span class="sd"> Helper for resolving columns.</span> -</span><span id="Resolver-478"><a href="#Resolver-478"><span class="linenos">478</span></a> -</span><span id="Resolver-479"><a href="#Resolver-479"><span class="linenos">479</span></a><span class="sd"> This is a class so we can lazily load some things and easily share them across functions.</span> -</span><span id="Resolver-480"><a href="#Resolver-480"><span class="linenos">480</span></a><span class="sd"> """</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="Resolver-478"><a href="#Resolver-478"><span class="linenos">478</span></a><span class="k">class</span> <span class="nc">Resolver</span><span class="p">:</span> +</span><span id="Resolver-479"><a href="#Resolver-479"><span class="linenos">479</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="Resolver-480"><a href="#Resolver-480"><span class="linenos">480</span></a><span class="sd"> Helper for resolving columns.</span> </span><span id="Resolver-481"><a href="#Resolver-481"><span class="linenos">481</span></a> -</span><span id="Resolver-482"><a href="#Resolver-482"><span class="linenos">482</span></a> <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">schema</span><span class="p">:</span> <span class="n">Schema</span><span class="p">,</span> <span class="n">infer_schema</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">True</span><span class="p">):</span> -</span><span id="Resolver-483"><a href="#Resolver-483"><span class="linenos">483</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span> <span class="o">=</span> <span class="n">scope</span> -</span><span id="Resolver-484"><a href="#Resolver-484"><span class="linenos">484</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span> <span class="o">=</span> <span class="n">schema</span> -</span><span id="Resolver-485"><a href="#Resolver-485"><span class="linenos">485</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="Resolver-486"><a href="#Resolver-486"><span class="linenos">486</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">str</span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="Resolver-487"><a href="#Resolver-487"><span class="linenos">487</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="Resolver-488"><a href="#Resolver-488"><span class="linenos">488</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_infer_schema</span> <span class="o">=</span> <span class="n">infer_schema</span> -</span><span id="Resolver-489"><a href="#Resolver-489"><span class="linenos">489</span></a> -</span><span id="Resolver-490"><a href="#Resolver-490"><span class="linenos">490</span></a> <span class="k">def</span> <span class="nf">get_table</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">column_name</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Identifier</span><span class="p">]:</span> -</span><span id="Resolver-491"><a href="#Resolver-491"><span class="linenos">491</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="Resolver-492"><a href="#Resolver-492"><span class="linenos">492</span></a><span class="sd"> Get the table for a column name.</span> -</span><span id="Resolver-493"><a href="#Resolver-493"><span class="linenos">493</span></a> -</span><span id="Resolver-494"><a href="#Resolver-494"><span class="linenos">494</span></a><span class="sd"> Args:</span> -</span><span id="Resolver-495"><a href="#Resolver-495"><span class="linenos">495</span></a><span class="sd"> column_name: The column name to find the table for.</span> -</span><span id="Resolver-496"><a href="#Resolver-496"><span class="linenos">496</span></a><span class="sd"> Returns:</span> -</span><span id="Resolver-497"><a href="#Resolver-497"><span class="linenos">497</span></a><span class="sd"> The table name if it can be found/inferred.</span> -</span><span id="Resolver-498"><a href="#Resolver-498"><span class="linenos">498</span></a><span class="sd"> """</span> -</span><span id="Resolver-499"><a href="#Resolver-499"><span class="linenos">499</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> -</span><span id="Resolver-500"><a href="#Resolver-500"><span class="linenos">500</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_unambiguous_columns</span><span class="p">(</span> -</span><span id="Resolver-501"><a href="#Resolver-501"><span class="linenos">501</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span> -</span><span id="Resolver-502"><a href="#Resolver-502"><span class="linenos">502</span></a> <span class="p">)</span> -</span><span id="Resolver-503"><a href="#Resolver-503"><span class="linenos">503</span></a> -</span><span id="Resolver-504"><a href="#Resolver-504"><span class="linenos">504</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column_name</span><span class="p">)</span> -</span><span id="Resolver-505"><a href="#Resolver-505"><span class="linenos">505</span></a> -</span><span id="Resolver-506"><a href="#Resolver-506"><span class="linenos">506</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table_name</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">_infer_schema</span><span class="p">:</span> -</span><span id="Resolver-507"><a href="#Resolver-507"><span class="linenos">507</span></a> <span class="n">sources_without_schema</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span> -</span><span id="Resolver-508"><a href="#Resolver-508"><span class="linenos">508</span></a> <span class="n">source</span> -</span><span id="Resolver-509"><a href="#Resolver-509"><span class="linenos">509</span></a> <span class="k">for</span> <span class="n">source</span><span class="p">,</span> <span class="n">columns</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> -</span><span id="Resolver-510"><a href="#Resolver-510"><span class="linenos">510</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">columns</span> <span class="ow">or</span> <span class="s2">"*"</span> <span class="ow">in</span> <span class="n">columns</span> -</span><span id="Resolver-511"><a href="#Resolver-511"><span class="linenos">511</span></a> <span class="p">)</span> -</span><span id="Resolver-512"><a href="#Resolver-512"><span class="linenos">512</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">sources_without_schema</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span> -</span><span id="Resolver-513"><a href="#Resolver-513"><span class="linenos">513</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="n">sources_without_schema</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> -</span><span id="Resolver-514"><a href="#Resolver-514"><span class="linenos">514</span></a> -</span><span id="Resolver-515"><a href="#Resolver-515"><span class="linenos">515</span></a> <span class="k">if</span> <span class="n">table_name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">:</span> -</span><span id="Resolver-516"><a href="#Resolver-516"><span class="linenos">516</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> +</span><span id="Resolver-482"><a href="#Resolver-482"><span class="linenos">482</span></a><span class="sd"> This is a class so we can lazily load some things and easily share them across functions.</span> +</span><span id="Resolver-483"><a href="#Resolver-483"><span class="linenos">483</span></a><span class="sd"> """</span> +</span><span id="Resolver-484"><a href="#Resolver-484"><span class="linenos">484</span></a> +</span><span id="Resolver-485"><a href="#Resolver-485"><span class="linenos">485</span></a> <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">schema</span><span class="p">:</span> <span class="n">Schema</span><span class="p">,</span> <span class="n">infer_schema</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">True</span><span class="p">):</span> +</span><span id="Resolver-486"><a href="#Resolver-486"><span class="linenos">486</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span> <span class="o">=</span> <span class="n">scope</span> +</span><span id="Resolver-487"><a href="#Resolver-487"><span class="linenos">487</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span> <span class="o">=</span> <span class="n">schema</span> +</span><span id="Resolver-488"><a href="#Resolver-488"><span class="linenos">488</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="Resolver-489"><a href="#Resolver-489"><span class="linenos">489</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">str</span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="Resolver-490"><a href="#Resolver-490"><span class="linenos">490</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="Resolver-491"><a href="#Resolver-491"><span class="linenos">491</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_infer_schema</span> <span class="o">=</span> <span class="n">infer_schema</span> +</span><span id="Resolver-492"><a href="#Resolver-492"><span class="linenos">492</span></a> +</span><span id="Resolver-493"><a href="#Resolver-493"><span class="linenos">493</span></a> <span class="k">def</span> <span class="nf">get_table</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">column_name</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Identifier</span><span class="p">]:</span> +</span><span id="Resolver-494"><a href="#Resolver-494"><span class="linenos">494</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="Resolver-495"><a href="#Resolver-495"><span class="linenos">495</span></a><span class="sd"> Get the table for a column name.</span> +</span><span id="Resolver-496"><a href="#Resolver-496"><span class="linenos">496</span></a> +</span><span id="Resolver-497"><a href="#Resolver-497"><span class="linenos">497</span></a><span class="sd"> Args:</span> +</span><span id="Resolver-498"><a href="#Resolver-498"><span class="linenos">498</span></a><span class="sd"> column_name: The column name to find the table for.</span> +</span><span id="Resolver-499"><a href="#Resolver-499"><span class="linenos">499</span></a><span class="sd"> Returns:</span> +</span><span id="Resolver-500"><a href="#Resolver-500"><span class="linenos">500</span></a><span class="sd"> The table name if it can be found/inferred.</span> +</span><span id="Resolver-501"><a href="#Resolver-501"><span class="linenos">501</span></a><span class="sd"> """</span> +</span><span id="Resolver-502"><a href="#Resolver-502"><span class="linenos">502</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> +</span><span id="Resolver-503"><a href="#Resolver-503"><span class="linenos">503</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_unambiguous_columns</span><span class="p">(</span> +</span><span id="Resolver-504"><a href="#Resolver-504"><span class="linenos">504</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span> +</span><span id="Resolver-505"><a href="#Resolver-505"><span class="linenos">505</span></a> <span class="p">)</span> +</span><span id="Resolver-506"><a href="#Resolver-506"><span class="linenos">506</span></a> +</span><span id="Resolver-507"><a href="#Resolver-507"><span class="linenos">507</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column_name</span><span class="p">)</span> +</span><span id="Resolver-508"><a href="#Resolver-508"><span class="linenos">508</span></a> +</span><span id="Resolver-509"><a href="#Resolver-509"><span class="linenos">509</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table_name</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">_infer_schema</span><span class="p">:</span> +</span><span id="Resolver-510"><a href="#Resolver-510"><span class="linenos">510</span></a> <span class="n">sources_without_schema</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span> +</span><span id="Resolver-511"><a href="#Resolver-511"><span class="linenos">511</span></a> <span class="n">source</span> +</span><span id="Resolver-512"><a href="#Resolver-512"><span class="linenos">512</span></a> <span class="k">for</span> <span class="n">source</span><span class="p">,</span> <span class="n">columns</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> +</span><span id="Resolver-513"><a href="#Resolver-513"><span class="linenos">513</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">columns</span> <span class="ow">or</span> <span class="s2">"*"</span> <span class="ow">in</span> <span class="n">columns</span> +</span><span id="Resolver-514"><a href="#Resolver-514"><span class="linenos">514</span></a> <span class="p">)</span> +</span><span id="Resolver-515"><a href="#Resolver-515"><span class="linenos">515</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">sources_without_schema</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span> +</span><span id="Resolver-516"><a href="#Resolver-516"><span class="linenos">516</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="n">sources_without_schema</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> </span><span id="Resolver-517"><a href="#Resolver-517"><span class="linenos">517</span></a> -</span><span id="Resolver-518"><a href="#Resolver-518"><span class="linenos">518</span></a> <span class="n">node</span><span class="p">,</span> <span class="n">_</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> -</span><span id="Resolver-519"><a href="#Resolver-519"><span class="linenos">519</span></a> -</span><span id="Resolver-520"><a href="#Resolver-520"><span class="linenos">520</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subqueryable</span><span class="p">):</span> -</span><span id="Resolver-521"><a href="#Resolver-521"><span class="linenos">521</span></a> <span class="k">while</span> <span class="n">node</span> <span class="ow">and</span> <span class="n">node</span><span class="o">.</span><span class="n">alias</span> <span class="o">!=</span> <span class="n">table_name</span><span class="p">:</span> -</span><span id="Resolver-522"><a href="#Resolver-522"><span class="linenos">522</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">parent</span> -</span><span id="Resolver-523"><a href="#Resolver-523"><span class="linenos">523</span></a> -</span><span id="Resolver-524"><a href="#Resolver-524"><span class="linenos">524</span></a> <span class="n">node_alias</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">)</span> -</span><span id="Resolver-525"><a href="#Resolver-525"><span class="linenos">525</span></a> <span class="k">if</span> <span class="n">node_alias</span><span class="p">:</span> -</span><span id="Resolver-526"><a href="#Resolver-526"><span class="linenos">526</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">node_alias</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> -</span><span id="Resolver-527"><a href="#Resolver-527"><span class="linenos">527</span></a> -</span><span id="Resolver-528"><a href="#Resolver-528"><span class="linenos">528</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> -</span><span id="Resolver-529"><a href="#Resolver-529"><span class="linenos">529</span></a> -</span><span id="Resolver-530"><a href="#Resolver-530"><span class="linenos">530</span></a> <span class="nd">@property</span> -</span><span id="Resolver-531"><a href="#Resolver-531"><span class="linenos">531</span></a> <span class="k">def</span> <span class="nf">all_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> -</span><span id="Resolver-532"><a href="#Resolver-532"><span class="linenos">532</span></a><span class="w"> </span><span class="sd">"""All available columns of all sources in this scope"""</span> -</span><span id="Resolver-533"><a href="#Resolver-533"><span class="linenos">533</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> -</span><span id="Resolver-534"><a href="#Resolver-534"><span class="linenos">534</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="o">=</span> <span class="p">{</span> -</span><span id="Resolver-535"><a href="#Resolver-535"><span class="linenos">535</span></a> <span class="n">column</span> <span class="k">for</span> <span class="n">columns</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span><span class="o">.</span><span class="n">values</span><span class="p">()</span> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">columns</span> -</span><span id="Resolver-536"><a href="#Resolver-536"><span class="linenos">536</span></a> <span class="p">}</span> -</span><span id="Resolver-537"><a href="#Resolver-537"><span class="linenos">537</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> -</span><span id="Resolver-538"><a href="#Resolver-538"><span class="linenos">538</span></a> -</span><span id="Resolver-539"><a href="#Resolver-539"><span class="linenos">539</span></a> <span class="k">def</span> <span class="nf">get_source_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">only_visible</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> -</span><span id="Resolver-540"><a href="#Resolver-540"><span class="linenos">540</span></a><span class="w"> </span><span class="sd">"""Resolve the source columns for a given source `name`"""</span> -</span><span id="Resolver-541"><a href="#Resolver-541"><span class="linenos">541</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> -</span><span id="Resolver-542"><a href="#Resolver-542"><span class="linenos">542</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown table: </span><span class="si">{</span><span class="n">name</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> -</span><span id="Resolver-543"><a href="#Resolver-543"><span class="linenos">543</span></a> -</span><span id="Resolver-544"><a href="#Resolver-544"><span class="linenos">544</span></a> <span class="n">source</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> -</span><span id="Resolver-545"><a href="#Resolver-545"><span class="linenos">545</span></a> -</span><span id="Resolver-546"><a href="#Resolver-546"><span class="linenos">546</span></a> <span class="c1"># If referencing a table, return the columns from the schema</span> -</span><span id="Resolver-547"><a href="#Resolver-547"><span class="linenos">547</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> -</span><span id="Resolver-548"><a href="#Resolver-548"><span class="linenos">548</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span><span class="o">.</span><span class="n">column_names</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">only_visible</span><span class="p">)</span> -</span><span id="Resolver-549"><a href="#Resolver-549"><span class="linenos">549</span></a> -</span><span id="Resolver-550"><a href="#Resolver-550"><span class="linenos">550</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">Scope</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Values</span><span class="p">):</span> -</span><span id="Resolver-551"><a href="#Resolver-551"><span class="linenos">551</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">alias_column_names</span> +</span><span id="Resolver-518"><a href="#Resolver-518"><span class="linenos">518</span></a> <span class="k">if</span> <span class="n">table_name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">:</span> +</span><span id="Resolver-519"><a href="#Resolver-519"><span class="linenos">519</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> +</span><span id="Resolver-520"><a href="#Resolver-520"><span class="linenos">520</span></a> +</span><span id="Resolver-521"><a href="#Resolver-521"><span class="linenos">521</span></a> <span class="n">node</span><span class="p">,</span> <span class="n">_</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> +</span><span id="Resolver-522"><a href="#Resolver-522"><span class="linenos">522</span></a> +</span><span id="Resolver-523"><a href="#Resolver-523"><span class="linenos">523</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subqueryable</span><span class="p">):</span> +</span><span id="Resolver-524"><a href="#Resolver-524"><span class="linenos">524</span></a> <span class="k">while</span> <span class="n">node</span> <span class="ow">and</span> <span class="n">node</span><span class="o">.</span><span class="n">alias</span> <span class="o">!=</span> <span class="n">table_name</span><span class="p">:</span> +</span><span id="Resolver-525"><a href="#Resolver-525"><span class="linenos">525</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">parent</span> +</span><span id="Resolver-526"><a href="#Resolver-526"><span class="linenos">526</span></a> +</span><span id="Resolver-527"><a href="#Resolver-527"><span class="linenos">527</span></a> <span class="n">node_alias</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">)</span> +</span><span id="Resolver-528"><a href="#Resolver-528"><span class="linenos">528</span></a> <span class="k">if</span> <span class="n">node_alias</span><span class="p">:</span> +</span><span id="Resolver-529"><a href="#Resolver-529"><span class="linenos">529</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">node_alias</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> +</span><span id="Resolver-530"><a href="#Resolver-530"><span class="linenos">530</span></a> +</span><span id="Resolver-531"><a href="#Resolver-531"><span class="linenos">531</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> +</span><span id="Resolver-532"><a href="#Resolver-532"><span class="linenos">532</span></a> +</span><span id="Resolver-533"><a href="#Resolver-533"><span class="linenos">533</span></a> <span class="nd">@property</span> +</span><span id="Resolver-534"><a href="#Resolver-534"><span class="linenos">534</span></a> <span class="k">def</span> <span class="nf">all_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> +</span><span id="Resolver-535"><a href="#Resolver-535"><span class="linenos">535</span></a><span class="w"> </span><span class="sd">"""All available columns of all sources in this scope"""</span> +</span><span id="Resolver-536"><a href="#Resolver-536"><span class="linenos">536</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> +</span><span id="Resolver-537"><a href="#Resolver-537"><span class="linenos">537</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="o">=</span> <span class="p">{</span> +</span><span id="Resolver-538"><a href="#Resolver-538"><span class="linenos">538</span></a> <span class="n">column</span> <span class="k">for</span> <span class="n">columns</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span><span class="o">.</span><span class="n">values</span><span class="p">()</span> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">columns</span> +</span><span id="Resolver-539"><a href="#Resolver-539"><span class="linenos">539</span></a> <span class="p">}</span> +</span><span id="Resolver-540"><a href="#Resolver-540"><span class="linenos">540</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> +</span><span id="Resolver-541"><a href="#Resolver-541"><span class="linenos">541</span></a> +</span><span id="Resolver-542"><a href="#Resolver-542"><span class="linenos">542</span></a> <span class="k">def</span> <span class="nf">get_source_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">only_visible</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> +</span><span id="Resolver-543"><a href="#Resolver-543"><span class="linenos">543</span></a><span class="w"> </span><span class="sd">"""Resolve the source columns for a given source `name`"""</span> +</span><span id="Resolver-544"><a href="#Resolver-544"><span class="linenos">544</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> +</span><span id="Resolver-545"><a href="#Resolver-545"><span class="linenos">545</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown table: </span><span class="si">{</span><span class="n">name</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="Resolver-546"><a href="#Resolver-546"><span class="linenos">546</span></a> +</span><span id="Resolver-547"><a href="#Resolver-547"><span class="linenos">547</span></a> <span class="n">source</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> +</span><span id="Resolver-548"><a href="#Resolver-548"><span class="linenos">548</span></a> +</span><span id="Resolver-549"><a href="#Resolver-549"><span class="linenos">549</span></a> <span class="c1"># If referencing a table, return the columns from the schema</span> +</span><span id="Resolver-550"><a href="#Resolver-550"><span class="linenos">550</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> +</span><span id="Resolver-551"><a href="#Resolver-551"><span class="linenos">551</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span><span class="o">.</span><span class="n">column_names</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">only_visible</span><span class="p">)</span> </span><span id="Resolver-552"><a href="#Resolver-552"><span class="linenos">552</span></a> -</span><span id="Resolver-553"><a href="#Resolver-553"><span class="linenos">553</span></a> <span class="c1"># Otherwise, if referencing another scope, return that scope's named selects</span> -</span><span id="Resolver-554"><a href="#Resolver-554"><span class="linenos">554</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">named_selects</span> +</span><span id="Resolver-553"><a href="#Resolver-553"><span class="linenos">553</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">Scope</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Values</span><span class="p">):</span> +</span><span id="Resolver-554"><a href="#Resolver-554"><span class="linenos">554</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">alias_column_names</span> </span><span id="Resolver-555"><a href="#Resolver-555"><span class="linenos">555</span></a> -</span><span id="Resolver-556"><a href="#Resolver-556"><span class="linenos">556</span></a> <span class="k">def</span> <span class="nf">_get_all_source_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> -</span><span id="Resolver-557"><a href="#Resolver-557"><span class="linenos">557</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> -</span><span id="Resolver-558"><a href="#Resolver-558"><span class="linenos">558</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="o">=</span> <span class="p">{</span> -</span><span id="Resolver-559"><a href="#Resolver-559"><span class="linenos">559</span></a> <span class="n">k</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">k</span><span class="p">)</span> -</span><span id="Resolver-560"><a href="#Resolver-560"><span class="linenos">560</span></a> <span class="k">for</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">chain</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">lateral_sources</span><span class="p">)</span> -</span><span id="Resolver-561"><a href="#Resolver-561"><span class="linenos">561</span></a> <span class="p">}</span> -</span><span id="Resolver-562"><a href="#Resolver-562"><span class="linenos">562</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> -</span><span id="Resolver-563"><a href="#Resolver-563"><span class="linenos">563</span></a> -</span><span id="Resolver-564"><a href="#Resolver-564"><span class="linenos">564</span></a> <span class="k">def</span> <span class="nf">_get_unambiguous_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">source_columns</span><span class="p">):</span> -</span><span id="Resolver-565"><a href="#Resolver-565"><span class="linenos">565</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="Resolver-566"><a href="#Resolver-566"><span class="linenos">566</span></a><span class="sd"> Find all the unambiguous columns in sources.</span> -</span><span id="Resolver-567"><a href="#Resolver-567"><span class="linenos">567</span></a> -</span><span id="Resolver-568"><a href="#Resolver-568"><span class="linenos">568</span></a><span class="sd"> Args:</span> -</span><span id="Resolver-569"><a href="#Resolver-569"><span class="linenos">569</span></a><span class="sd"> source_columns (dict): Mapping of names to source columns</span> -</span><span id="Resolver-570"><a href="#Resolver-570"><span class="linenos">570</span></a><span class="sd"> Returns:</span> -</span><span id="Resolver-571"><a href="#Resolver-571"><span class="linenos">571</span></a><span class="sd"> dict: Mapping of column name to source name</span> -</span><span id="Resolver-572"><a href="#Resolver-572"><span class="linenos">572</span></a><span class="sd"> """</span> -</span><span id="Resolver-573"><a href="#Resolver-573"><span class="linenos">573</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">source_columns</span><span class="p">:</span> -</span><span id="Resolver-574"><a href="#Resolver-574"><span class="linenos">574</span></a> <span class="k">return</span> <span class="p">{}</span> -</span><span id="Resolver-575"><a href="#Resolver-575"><span class="linenos">575</span></a> -</span><span id="Resolver-576"><a href="#Resolver-576"><span class="linenos">576</span></a> <span class="n">source_columns</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">source_columns</span><span class="o">.</span><span class="n">items</span><span class="p">())</span> -</span><span id="Resolver-577"><a href="#Resolver-577"><span class="linenos">577</span></a> -</span><span id="Resolver-578"><a href="#Resolver-578"><span class="linenos">578</span></a> <span class="n">first_table</span><span class="p">,</span> <span class="n">first_columns</span> <span class="o">=</span> <span class="n">source_columns</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> -</span><span id="Resolver-579"><a href="#Resolver-579"><span class="linenos">579</span></a> <span class="n">unambiguous_columns</span> <span class="o">=</span> <span class="p">{</span><span class="n">col</span><span class="p">:</span> <span class="n">first_table</span> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_find_unique_columns</span><span class="p">(</span><span class="n">first_columns</span><span class="p">)}</span> -</span><span id="Resolver-580"><a href="#Resolver-580"><span class="linenos">580</span></a> <span class="n">all_columns</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">unambiguous_columns</span><span class="p">)</span> -</span><span id="Resolver-581"><a href="#Resolver-581"><span class="linenos">581</span></a> -</span><span id="Resolver-582"><a href="#Resolver-582"><span class="linenos">582</span></a> <span class="k">for</span> <span class="n">table</span><span class="p">,</span> <span class="n">columns</span> <span class="ow">in</span> <span class="n">source_columns</span><span class="p">[</span><span class="mi">1</span><span class="p">:]:</span> -</span><span id="Resolver-583"><a href="#Resolver-583"><span class="linenos">583</span></a> <span class="n">unique</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_find_unique_columns</span><span class="p">(</span><span class="n">columns</span><span class="p">)</span> -</span><span id="Resolver-584"><a href="#Resolver-584"><span class="linenos">584</span></a> <span class="n">ambiguous</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">all_columns</span><span class="p">)</span><span class="o">.</span><span class="n">intersection</span><span class="p">(</span><span class="n">unique</span><span class="p">)</span> -</span><span id="Resolver-585"><a href="#Resolver-585"><span class="linenos">585</span></a> <span class="n">all_columns</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">columns</span><span class="p">)</span> -</span><span id="Resolver-586"><a href="#Resolver-586"><span class="linenos">586</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">ambiguous</span><span class="p">:</span> -</span><span id="Resolver-587"><a href="#Resolver-587"><span class="linenos">587</span></a> <span class="n">unambiguous_columns</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> -</span><span id="Resolver-588"><a href="#Resolver-588"><span class="linenos">588</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">unique</span><span class="o">.</span><span class="n">difference</span><span class="p">(</span><span class="n">ambiguous</span><span class="p">):</span> -</span><span id="Resolver-589"><a href="#Resolver-589"><span class="linenos">589</span></a> <span class="n">unambiguous_columns</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">table</span> -</span><span id="Resolver-590"><a href="#Resolver-590"><span class="linenos">590</span></a> -</span><span id="Resolver-591"><a href="#Resolver-591"><span class="linenos">591</span></a> <span class="k">return</span> <span class="n">unambiguous_columns</span> -</span><span id="Resolver-592"><a href="#Resolver-592"><span class="linenos">592</span></a> -</span><span id="Resolver-593"><a href="#Resolver-593"><span class="linenos">593</span></a> <span class="nd">@staticmethod</span> -</span><span id="Resolver-594"><a href="#Resolver-594"><span class="linenos">594</span></a> <span class="k">def</span> <span class="nf">_find_unique_columns</span><span class="p">(</span><span class="n">columns</span><span class="p">):</span> -</span><span id="Resolver-595"><a href="#Resolver-595"><span class="linenos">595</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="Resolver-596"><a href="#Resolver-596"><span class="linenos">596</span></a><span class="sd"> Find the unique columns in a list of columns.</span> -</span><span id="Resolver-597"><a href="#Resolver-597"><span class="linenos">597</span></a> -</span><span id="Resolver-598"><a href="#Resolver-598"><span class="linenos">598</span></a><span class="sd"> Example:</span> -</span><span id="Resolver-599"><a href="#Resolver-599"><span class="linenos">599</span></a><span class="sd"> >>> sorted(Resolver._find_unique_columns(["a", "b", "b", "c"]))</span> -</span><span id="Resolver-600"><a href="#Resolver-600"><span class="linenos">600</span></a><span class="sd"> ['a', 'c']</span> -</span><span id="Resolver-601"><a href="#Resolver-601"><span class="linenos">601</span></a> -</span><span id="Resolver-602"><a href="#Resolver-602"><span class="linenos">602</span></a><span class="sd"> This is necessary because duplicate column names are ambiguous.</span> -</span><span id="Resolver-603"><a href="#Resolver-603"><span class="linenos">603</span></a><span class="sd"> """</span> -</span><span id="Resolver-604"><a href="#Resolver-604"><span class="linenos">604</span></a> <span class="n">counts</span> <span class="o">=</span> <span class="p">{}</span> -</span><span id="Resolver-605"><a href="#Resolver-605"><span class="linenos">605</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span> -</span><span id="Resolver-606"><a href="#Resolver-606"><span class="linenos">606</span></a> <span class="n">counts</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">counts</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span> <span class="o">+</span> <span class="mi">1</span> -</span><span id="Resolver-607"><a href="#Resolver-607"><span class="linenos">607</span></a> <span class="k">return</span> <span class="p">{</span><span class="n">column</span> <span class="k">for</span> <span class="n">column</span><span class="p">,</span> <span class="n">count</span> <span class="ow">in</span> <span class="n">counts</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> <span class="k">if</span> <span class="n">count</span> <span class="o">==</span> <span class="mi">1</span><span class="p">}</span> +</span><span id="Resolver-556"><a href="#Resolver-556"><span class="linenos">556</span></a> <span class="c1"># Otherwise, if referencing another scope, return that scope's named selects</span> +</span><span id="Resolver-557"><a href="#Resolver-557"><span class="linenos">557</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">named_selects</span> +</span><span id="Resolver-558"><a href="#Resolver-558"><span class="linenos">558</span></a> +</span><span id="Resolver-559"><a href="#Resolver-559"><span class="linenos">559</span></a> <span class="k">def</span> <span class="nf">_get_all_source_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> +</span><span id="Resolver-560"><a href="#Resolver-560"><span class="linenos">560</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> +</span><span id="Resolver-561"><a href="#Resolver-561"><span class="linenos">561</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="o">=</span> <span class="p">{</span> +</span><span id="Resolver-562"><a href="#Resolver-562"><span class="linenos">562</span></a> <span class="n">k</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">k</span><span class="p">)</span> +</span><span id="Resolver-563"><a href="#Resolver-563"><span class="linenos">563</span></a> <span class="k">for</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">chain</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">lateral_sources</span><span class="p">)</span> +</span><span id="Resolver-564"><a href="#Resolver-564"><span class="linenos">564</span></a> <span class="p">}</span> +</span><span id="Resolver-565"><a href="#Resolver-565"><span class="linenos">565</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> +</span><span id="Resolver-566"><a href="#Resolver-566"><span class="linenos">566</span></a> +</span><span id="Resolver-567"><a href="#Resolver-567"><span class="linenos">567</span></a> <span class="k">def</span> <span class="nf">_get_unambiguous_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">source_columns</span><span class="p">):</span> +</span><span id="Resolver-568"><a href="#Resolver-568"><span class="linenos">568</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="Resolver-569"><a href="#Resolver-569"><span class="linenos">569</span></a><span class="sd"> Find all the unambiguous columns in sources.</span> +</span><span id="Resolver-570"><a href="#Resolver-570"><span class="linenos">570</span></a> +</span><span id="Resolver-571"><a href="#Resolver-571"><span class="linenos">571</span></a><span class="sd"> Args:</span> +</span><span id="Resolver-572"><a href="#Resolver-572"><span class="linenos">572</span></a><span class="sd"> source_columns (dict): Mapping of names to source columns</span> +</span><span id="Resolver-573"><a href="#Resolver-573"><span class="linenos">573</span></a><span class="sd"> Returns:</span> +</span><span id="Resolver-574"><a href="#Resolver-574"><span class="linenos">574</span></a><span class="sd"> dict: Mapping of column name to source name</span> +</span><span id="Resolver-575"><a href="#Resolver-575"><span class="linenos">575</span></a><span class="sd"> """</span> +</span><span id="Resolver-576"><a href="#Resolver-576"><span class="linenos">576</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">source_columns</span><span class="p">:</span> +</span><span id="Resolver-577"><a href="#Resolver-577"><span class="linenos">577</span></a> <span class="k">return</span> <span class="p">{}</span> +</span><span id="Resolver-578"><a href="#Resolver-578"><span class="linenos">578</span></a> +</span><span id="Resolver-579"><a href="#Resolver-579"><span class="linenos">579</span></a> <span class="n">source_columns</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">source_columns</span><span class="o">.</span><span class="n">items</span><span class="p">())</span> +</span><span id="Resolver-580"><a href="#Resolver-580"><span class="linenos">580</span></a> +</span><span id="Resolver-581"><a href="#Resolver-581"><span class="linenos">581</span></a> <span class="n">first_table</span><span class="p">,</span> <span class="n">first_columns</span> <span class="o">=</span> <span class="n">source_columns</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> +</span><span id="Resolver-582"><a href="#Resolver-582"><span class="linenos">582</span></a> <span class="n">unambiguous_columns</span> <span class="o">=</span> <span class="p">{</span><span class="n">col</span><span class="p">:</span> <span class="n">first_table</span> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_find_unique_columns</span><span class="p">(</span><span class="n">first_columns</span><span class="p">)}</span> +</span><span id="Resolver-583"><a href="#Resolver-583"><span class="linenos">583</span></a> <span class="n">all_columns</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">unambiguous_columns</span><span class="p">)</span> +</span><span id="Resolver-584"><a href="#Resolver-584"><span class="linenos">584</span></a> +</span><span id="Resolver-585"><a href="#Resolver-585"><span class="linenos">585</span></a> <span class="k">for</span> <span class="n">table</span><span class="p">,</span> <span class="n">columns</span> <span class="ow">in</span> <span class="n">source_columns</span><span class="p">[</span><span class="mi">1</span><span class="p">:]:</span> +</span><span id="Resolver-586"><a href="#Resolver-586"><span class="linenos">586</span></a> <span class="n">unique</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_find_unique_columns</span><span class="p">(</span><span class="n">columns</span><span class="p">)</span> +</span><span id="Resolver-587"><a href="#Resolver-587"><span class="linenos">587</span></a> <span class="n">ambiguous</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">all_columns</span><span class="p">)</span><span class="o">.</span><span class="n">intersection</span><span class="p">(</span><span class="n">unique</span><span class="p">)</span> +</span><span id="Resolver-588"><a href="#Resolver-588"><span class="linenos">588</span></a> <span class="n">all_columns</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">columns</span><span class="p">)</span> +</span><span id="Resolver-589"><a href="#Resolver-589"><span class="linenos">589</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">ambiguous</span><span class="p">:</span> +</span><span id="Resolver-590"><a href="#Resolver-590"><span class="linenos">590</span></a> <span class="n">unambiguous_columns</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> +</span><span id="Resolver-591"><a href="#Resolver-591"><span class="linenos">591</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">unique</span><span class="o">.</span><span class="n">difference</span><span class="p">(</span><span class="n">ambiguous</span><span class="p">):</span> +</span><span id="Resolver-592"><a href="#Resolver-592"><span class="linenos">592</span></a> <span class="n">unambiguous_columns</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">table</span> +</span><span id="Resolver-593"><a href="#Resolver-593"><span class="linenos">593</span></a> +</span><span id="Resolver-594"><a href="#Resolver-594"><span class="linenos">594</span></a> <span class="k">return</span> <span class="n">unambiguous_columns</span> +</span><span id="Resolver-595"><a href="#Resolver-595"><span class="linenos">595</span></a> +</span><span id="Resolver-596"><a href="#Resolver-596"><span class="linenos">596</span></a> <span class="nd">@staticmethod</span> +</span><span id="Resolver-597"><a href="#Resolver-597"><span class="linenos">597</span></a> <span class="k">def</span> <span class="nf">_find_unique_columns</span><span class="p">(</span><span class="n">columns</span><span class="p">):</span> +</span><span id="Resolver-598"><a href="#Resolver-598"><span class="linenos">598</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="Resolver-599"><a href="#Resolver-599"><span class="linenos">599</span></a><span class="sd"> Find the unique columns in a list of columns.</span> +</span><span id="Resolver-600"><a href="#Resolver-600"><span class="linenos">600</span></a> +</span><span id="Resolver-601"><a href="#Resolver-601"><span class="linenos">601</span></a><span class="sd"> Example:</span> +</span><span id="Resolver-602"><a href="#Resolver-602"><span class="linenos">602</span></a><span class="sd"> >>> sorted(Resolver._find_unique_columns(["a", "b", "b", "c"]))</span> +</span><span id="Resolver-603"><a href="#Resolver-603"><span class="linenos">603</span></a><span class="sd"> ['a', 'c']</span> +</span><span id="Resolver-604"><a href="#Resolver-604"><span class="linenos">604</span></a> +</span><span id="Resolver-605"><a href="#Resolver-605"><span class="linenos">605</span></a><span class="sd"> This is necessary because duplicate column names are ambiguous.</span> +</span><span id="Resolver-606"><a href="#Resolver-606"><span class="linenos">606</span></a><span class="sd"> """</span> +</span><span id="Resolver-607"><a href="#Resolver-607"><span class="linenos">607</span></a> <span class="n">counts</span> <span class="o">=</span> <span class="p">{}</span> +</span><span id="Resolver-608"><a href="#Resolver-608"><span class="linenos">608</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span> +</span><span id="Resolver-609"><a href="#Resolver-609"><span class="linenos">609</span></a> <span class="n">counts</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">counts</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span> <span class="o">+</span> <span class="mi">1</span> +</span><span id="Resolver-610"><a href="#Resolver-610"><span class="linenos">610</span></a> <span class="k">return</span> <span class="p">{</span><span class="n">column</span> <span class="k">for</span> <span class="n">column</span><span class="p">,</span> <span class="n">count</span> <span class="ow">in</span> <span class="n">counts</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> <span class="k">if</span> <span class="n">count</span> <span class="o">==</span> <span class="mi">1</span><span class="p">}</span> </span></pre></div> @@ -1012,13 +1016,13 @@ </div> <a class="headerlink" href="#Resolver.__init__"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="Resolver.__init__-482"><a href="#Resolver.__init__-482"><span class="linenos">482</span></a> <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">schema</span><span class="p">:</span> <span class="n">Schema</span><span class="p">,</span> <span class="n">infer_schema</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">True</span><span class="p">):</span> -</span><span id="Resolver.__init__-483"><a href="#Resolver.__init__-483"><span class="linenos">483</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span> <span class="o">=</span> <span class="n">scope</span> -</span><span id="Resolver.__init__-484"><a href="#Resolver.__init__-484"><span class="linenos">484</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span> <span class="o">=</span> <span class="n">schema</span> -</span><span id="Resolver.__init__-485"><a href="#Resolver.__init__-485"><span class="linenos">485</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="Resolver.__init__-486"><a href="#Resolver.__init__-486"><span class="linenos">486</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">str</span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="Resolver.__init__-487"><a href="#Resolver.__init__-487"><span class="linenos">487</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="Resolver.__init__-488"><a href="#Resolver.__init__-488"><span class="linenos">488</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_infer_schema</span> <span class="o">=</span> <span class="n">infer_schema</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="Resolver.__init__-485"><a href="#Resolver.__init__-485"><span class="linenos">485</span></a> <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">schema</span><span class="p">:</span> <span class="n">Schema</span><span class="p">,</span> <span class="n">infer_schema</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">True</span><span class="p">):</span> +</span><span id="Resolver.__init__-486"><a href="#Resolver.__init__-486"><span class="linenos">486</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span> <span class="o">=</span> <span class="n">scope</span> +</span><span id="Resolver.__init__-487"><a href="#Resolver.__init__-487"><span class="linenos">487</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span> <span class="o">=</span> <span class="n">schema</span> +</span><span id="Resolver.__init__-488"><a href="#Resolver.__init__-488"><span class="linenos">488</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="Resolver.__init__-489"><a href="#Resolver.__init__-489"><span class="linenos">489</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">str</span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="Resolver.__init__-490"><a href="#Resolver.__init__-490"><span class="linenos">490</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="Resolver.__init__-491"><a href="#Resolver.__init__-491"><span class="linenos">491</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_infer_schema</span> <span class="o">=</span> <span class="n">infer_schema</span> </span></pre></div> @@ -1058,45 +1062,45 @@ </div> <a class="headerlink" href="#Resolver.get_table"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="Resolver.get_table-490"><a href="#Resolver.get_table-490"><span class="linenos">490</span></a> <span class="k">def</span> <span class="nf">get_table</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">column_name</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Identifier</span><span class="p">]:</span> -</span><span id="Resolver.get_table-491"><a href="#Resolver.get_table-491"><span class="linenos">491</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="Resolver.get_table-492"><a href="#Resolver.get_table-492"><span class="linenos">492</span></a><span class="sd"> Get the table for a column name.</span> -</span><span id="Resolver.get_table-493"><a href="#Resolver.get_table-493"><span class="linenos">493</span></a> -</span><span id="Resolver.get_table-494"><a href="#Resolver.get_table-494"><span class="linenos">494</span></a><span class="sd"> Args:</span> -</span><span id="Resolver.get_table-495"><a href="#Resolver.get_table-495"><span class="linenos">495</span></a><span class="sd"> column_name: The column name to find the table for.</span> -</span><span id="Resolver.get_table-496"><a href="#Resolver.get_table-496"><span class="linenos">496</span></a><span class="sd"> Returns:</span> -</span><span id="Resolver.get_table-497"><a href="#Resolver.get_table-497"><span class="linenos">497</span></a><span class="sd"> The table name if it can be found/inferred.</span> -</span><span id="Resolver.get_table-498"><a href="#Resolver.get_table-498"><span class="linenos">498</span></a><span class="sd"> """</span> -</span><span id="Resolver.get_table-499"><a href="#Resolver.get_table-499"><span class="linenos">499</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> -</span><span id="Resolver.get_table-500"><a href="#Resolver.get_table-500"><span class="linenos">500</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_unambiguous_columns</span><span class="p">(</span> -</span><span id="Resolver.get_table-501"><a href="#Resolver.get_table-501"><span class="linenos">501</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span> -</span><span id="Resolver.get_table-502"><a href="#Resolver.get_table-502"><span class="linenos">502</span></a> <span class="p">)</span> -</span><span id="Resolver.get_table-503"><a href="#Resolver.get_table-503"><span class="linenos">503</span></a> -</span><span id="Resolver.get_table-504"><a href="#Resolver.get_table-504"><span class="linenos">504</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column_name</span><span class="p">)</span> -</span><span id="Resolver.get_table-505"><a href="#Resolver.get_table-505"><span class="linenos">505</span></a> -</span><span id="Resolver.get_table-506"><a href="#Resolver.get_table-506"><span class="linenos">506</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table_name</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">_infer_schema</span><span class="p">:</span> -</span><span id="Resolver.get_table-507"><a href="#Resolver.get_table-507"><span class="linenos">507</span></a> <span class="n">sources_without_schema</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span> -</span><span id="Resolver.get_table-508"><a href="#Resolver.get_table-508"><span class="linenos">508</span></a> <span class="n">source</span> -</span><span id="Resolver.get_table-509"><a href="#Resolver.get_table-509"><span class="linenos">509</span></a> <span class="k">for</span> <span class="n">source</span><span class="p">,</span> <span class="n">columns</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> -</span><span id="Resolver.get_table-510"><a href="#Resolver.get_table-510"><span class="linenos">510</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">columns</span> <span class="ow">or</span> <span class="s2">"*"</span> <span class="ow">in</span> <span class="n">columns</span> -</span><span id="Resolver.get_table-511"><a href="#Resolver.get_table-511"><span class="linenos">511</span></a> <span class="p">)</span> -</span><span id="Resolver.get_table-512"><a href="#Resolver.get_table-512"><span class="linenos">512</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">sources_without_schema</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span> -</span><span id="Resolver.get_table-513"><a href="#Resolver.get_table-513"><span class="linenos">513</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="n">sources_without_schema</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> -</span><span id="Resolver.get_table-514"><a href="#Resolver.get_table-514"><span class="linenos">514</span></a> -</span><span id="Resolver.get_table-515"><a href="#Resolver.get_table-515"><span class="linenos">515</span></a> <span class="k">if</span> <span class="n">table_name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">:</span> -</span><span id="Resolver.get_table-516"><a href="#Resolver.get_table-516"><span class="linenos">516</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="Resolver.get_table-493"><a href="#Resolver.get_table-493"><span class="linenos">493</span></a> <span class="k">def</span> <span class="nf">get_table</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">column_name</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Identifier</span><span class="p">]:</span> +</span><span id="Resolver.get_table-494"><a href="#Resolver.get_table-494"><span class="linenos">494</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="Resolver.get_table-495"><a href="#Resolver.get_table-495"><span class="linenos">495</span></a><span class="sd"> Get the table for a column name.</span> +</span><span id="Resolver.get_table-496"><a href="#Resolver.get_table-496"><span class="linenos">496</span></a> +</span><span id="Resolver.get_table-497"><a href="#Resolver.get_table-497"><span class="linenos">497</span></a><span class="sd"> Args:</span> +</span><span id="Resolver.get_table-498"><a href="#Resolver.get_table-498"><span class="linenos">498</span></a><span class="sd"> column_name: The column name to find the table for.</span> +</span><span id="Resolver.get_table-499"><a href="#Resolver.get_table-499"><span class="linenos">499</span></a><span class="sd"> Returns:</span> +</span><span id="Resolver.get_table-500"><a href="#Resolver.get_table-500"><span class="linenos">500</span></a><span class="sd"> The table name if it can be found/inferred.</span> +</span><span id="Resolver.get_table-501"><a href="#Resolver.get_table-501"><span class="linenos">501</span></a><span class="sd"> """</span> +</span><span id="Resolver.get_table-502"><a href="#Resolver.get_table-502"><span class="linenos">502</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> +</span><span id="Resolver.get_table-503"><a href="#Resolver.get_table-503"><span class="linenos">503</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_unambiguous_columns</span><span class="p">(</span> +</span><span id="Resolver.get_table-504"><a href="#Resolver.get_table-504"><span class="linenos">504</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span> +</span><span id="Resolver.get_table-505"><a href="#Resolver.get_table-505"><span class="linenos">505</span></a> <span class="p">)</span> +</span><span id="Resolver.get_table-506"><a href="#Resolver.get_table-506"><span class="linenos">506</span></a> +</span><span id="Resolver.get_table-507"><a href="#Resolver.get_table-507"><span class="linenos">507</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column_name</span><span class="p">)</span> +</span><span id="Resolver.get_table-508"><a href="#Resolver.get_table-508"><span class="linenos">508</span></a> +</span><span id="Resolver.get_table-509"><a href="#Resolver.get_table-509"><span class="linenos">509</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table_name</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">_infer_schema</span><span class="p">:</span> +</span><span id="Resolver.get_table-510"><a href="#Resolver.get_table-510"><span class="linenos">510</span></a> <span class="n">sources_without_schema</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span> +</span><span id="Resolver.get_table-511"><a href="#Resolver.get_table-511"><span class="linenos">511</span></a> <span class="n">source</span> +</span><span id="Resolver.get_table-512"><a href="#Resolver.get_table-512"><span class="linenos">512</span></a> <span class="k">for</span> <span class="n">source</span><span class="p">,</span> <span class="n">columns</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> +</span><span id="Resolver.get_table-513"><a href="#Resolver.get_table-513"><span class="linenos">513</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">columns</span> <span class="ow">or</span> <span class="s2">"*"</span> <span class="ow">in</span> <span class="n">columns</span> +</span><span id="Resolver.get_table-514"><a href="#Resolver.get_table-514"><span class="linenos">514</span></a> <span class="p">)</span> +</span><span id="Resolver.get_table-515"><a href="#Resolver.get_table-515"><span class="linenos">515</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">sources_without_schema</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span> +</span><span id="Resolver.get_table-516"><a href="#Resolver.get_table-516"><span class="linenos">516</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="n">sources_without_schema</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> </span><span id="Resolver.get_table-517"><a href="#Resolver.get_table-517"><span class="linenos">517</span></a> -</span><span id="Resolver.get_table-518"><a href="#Resolver.get_table-518"><span class="linenos">518</span></a> <span class="n">node</span><span class="p">,</span> <span class="n">_</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> -</span><span id="Resolver.get_table-519"><a href="#Resolver.get_table-519"><span class="linenos">519</span></a> -</span><span id="Resolver.get_table-520"><a href="#Resolver.get_table-520"><span class="linenos">520</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subqueryable</span><span class="p">):</span> -</span><span id="Resolver.get_table-521"><a href="#Resolver.get_table-521"><span class="linenos">521</span></a> <span class="k">while</span> <span class="n">node</span> <span class="ow">and</span> <span class="n">node</span><span class="o">.</span><span class="n">alias</span> <span class="o">!=</span> <span class="n">table_name</span><span class="p">:</span> -</span><span id="Resolver.get_table-522"><a href="#Resolver.get_table-522"><span class="linenos">522</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">parent</span> -</span><span id="Resolver.get_table-523"><a href="#Resolver.get_table-523"><span class="linenos">523</span></a> -</span><span id="Resolver.get_table-524"><a href="#Resolver.get_table-524"><span class="linenos">524</span></a> <span class="n">node_alias</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">)</span> -</span><span id="Resolver.get_table-525"><a href="#Resolver.get_table-525"><span class="linenos">525</span></a> <span class="k">if</span> <span class="n">node_alias</span><span class="p">:</span> -</span><span id="Resolver.get_table-526"><a href="#Resolver.get_table-526"><span class="linenos">526</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">node_alias</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> -</span><span id="Resolver.get_table-527"><a href="#Resolver.get_table-527"><span class="linenos">527</span></a> -</span><span id="Resolver.get_table-528"><a href="#Resolver.get_table-528"><span class="linenos">528</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> +</span><span id="Resolver.get_table-518"><a href="#Resolver.get_table-518"><span class="linenos">518</span></a> <span class="k">if</span> <span class="n">table_name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">:</span> +</span><span id="Resolver.get_table-519"><a href="#Resolver.get_table-519"><span class="linenos">519</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> +</span><span id="Resolver.get_table-520"><a href="#Resolver.get_table-520"><span class="linenos">520</span></a> +</span><span id="Resolver.get_table-521"><a href="#Resolver.get_table-521"><span class="linenos">521</span></a> <span class="n">node</span><span class="p">,</span> <span class="n">_</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> +</span><span id="Resolver.get_table-522"><a href="#Resolver.get_table-522"><span class="linenos">522</span></a> +</span><span id="Resolver.get_table-523"><a href="#Resolver.get_table-523"><span class="linenos">523</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subqueryable</span><span class="p">):</span> +</span><span id="Resolver.get_table-524"><a href="#Resolver.get_table-524"><span class="linenos">524</span></a> <span class="k">while</span> <span class="n">node</span> <span class="ow">and</span> <span class="n">node</span><span class="o">.</span><span class="n">alias</span> <span class="o">!=</span> <span class="n">table_name</span><span class="p">:</span> +</span><span id="Resolver.get_table-525"><a href="#Resolver.get_table-525"><span class="linenos">525</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">parent</span> +</span><span id="Resolver.get_table-526"><a href="#Resolver.get_table-526"><span class="linenos">526</span></a> +</span><span id="Resolver.get_table-527"><a href="#Resolver.get_table-527"><span class="linenos">527</span></a> <span class="n">node_alias</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">)</span> +</span><span id="Resolver.get_table-528"><a href="#Resolver.get_table-528"><span class="linenos">528</span></a> <span class="k">if</span> <span class="n">node_alias</span><span class="p">:</span> +</span><span id="Resolver.get_table-529"><a href="#Resolver.get_table-529"><span class="linenos">529</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">node_alias</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> +</span><span id="Resolver.get_table-530"><a href="#Resolver.get_table-530"><span class="linenos">530</span></a> +</span><span id="Resolver.get_table-531"><a href="#Resolver.get_table-531"><span class="linenos">531</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> </span></pre></div> @@ -1141,22 +1145,22 @@ </div> <a class="headerlink" href="#Resolver.get_source_columns"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="Resolver.get_source_columns-539"><a href="#Resolver.get_source_columns-539"><span class="linenos">539</span></a> <span class="k">def</span> <span class="nf">get_source_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">only_visible</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> -</span><span id="Resolver.get_source_columns-540"><a href="#Resolver.get_source_columns-540"><span class="linenos">540</span></a><span class="w"> </span><span class="sd">"""Resolve the source columns for a given source `name`"""</span> -</span><span id="Resolver.get_source_columns-541"><a href="#Resolver.get_source_columns-541"><span class="linenos">541</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> -</span><span id="Resolver.get_source_columns-542"><a href="#Resolver.get_source_columns-542"><span class="linenos">542</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown table: </span><span class="si">{</span><span class="n">name</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> -</span><span id="Resolver.get_source_columns-543"><a href="#Resolver.get_source_columns-543"><span class="linenos">543</span></a> -</span><span id="Resolver.get_source_columns-544"><a href="#Resolver.get_source_columns-544"><span class="linenos">544</span></a> <span class="n">source</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> -</span><span id="Resolver.get_source_columns-545"><a href="#Resolver.get_source_columns-545"><span class="linenos">545</span></a> -</span><span id="Resolver.get_source_columns-546"><a href="#Resolver.get_source_columns-546"><span class="linenos">546</span></a> <span class="c1"># If referencing a table, return the columns from the schema</span> -</span><span id="Resolver.get_source_columns-547"><a href="#Resolver.get_source_columns-547"><span class="linenos">547</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> -</span><span id="Resolver.get_source_columns-548"><a href="#Resolver.get_source_columns-548"><span class="linenos">548</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span><span class="o">.</span><span class="n">column_names</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">only_visible</span><span class="p">)</span> -</span><span id="Resolver.get_source_columns-549"><a href="#Resolver.get_source_columns-549"><span class="linenos">549</span></a> -</span><span id="Resolver.get_source_columns-550"><a href="#Resolver.get_source_columns-550"><span class="linenos">550</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">Scope</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Values</span><span class="p">):</span> -</span><span id="Resolver.get_source_columns-551"><a href="#Resolver.get_source_columns-551"><span class="linenos">551</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">alias_column_names</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="Resolver.get_source_columns-542"><a href="#Resolver.get_source_columns-542"><span class="linenos">542</span></a> <span class="k">def</span> <span class="nf">get_source_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">only_visible</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> +</span><span id="Resolver.get_source_columns-543"><a href="#Resolver.get_source_columns-543"><span class="linenos">543</span></a><span class="w"> </span><span class="sd">"""Resolve the source columns for a given source `name`"""</span> +</span><span id="Resolver.get_source_columns-544"><a href="#Resolver.get_source_columns-544"><span class="linenos">544</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> +</span><span id="Resolver.get_source_columns-545"><a href="#Resolver.get_source_columns-545"><span class="linenos">545</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown table: </span><span class="si">{</span><span class="n">name</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="Resolver.get_source_columns-546"><a href="#Resolver.get_source_columns-546"><span class="linenos">546</span></a> +</span><span id="Resolver.get_source_columns-547"><a href="#Resolver.get_source_columns-547"><span class="linenos">547</span></a> <span class="n">source</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> +</span><span id="Resolver.get_source_columns-548"><a href="#Resolver.get_source_columns-548"><span class="linenos">548</span></a> +</span><span id="Resolver.get_source_columns-549"><a href="#Resolver.get_source_columns-549"><span class="linenos">549</span></a> <span class="c1"># If referencing a table, return the columns from the schema</span> +</span><span id="Resolver.get_source_columns-550"><a href="#Resolver.get_source_columns-550"><span class="linenos">550</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> +</span><span id="Resolver.get_source_columns-551"><a href="#Resolver.get_source_columns-551"><span class="linenos">551</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span><span class="o">.</span><span class="n">column_names</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">only_visible</span><span class="p">)</span> </span><span id="Resolver.get_source_columns-552"><a href="#Resolver.get_source_columns-552"><span class="linenos">552</span></a> -</span><span id="Resolver.get_source_columns-553"><a href="#Resolver.get_source_columns-553"><span class="linenos">553</span></a> <span class="c1"># Otherwise, if referencing another scope, return that scope's named selects</span> -</span><span id="Resolver.get_source_columns-554"><a href="#Resolver.get_source_columns-554"><span class="linenos">554</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">named_selects</span> +</span><span id="Resolver.get_source_columns-553"><a href="#Resolver.get_source_columns-553"><span class="linenos">553</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">Scope</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Values</span><span class="p">):</span> +</span><span id="Resolver.get_source_columns-554"><a href="#Resolver.get_source_columns-554"><span class="linenos">554</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">alias_column_names</span> +</span><span id="Resolver.get_source_columns-555"><a href="#Resolver.get_source_columns-555"><span class="linenos">555</span></a> +</span><span id="Resolver.get_source_columns-556"><a href="#Resolver.get_source_columns-556"><span class="linenos">556</span></a> <span class="c1"># Otherwise, if referencing another scope, return that scope's named selects</span> +</span><span id="Resolver.get_source_columns-557"><a href="#Resolver.get_source_columns-557"><span class="linenos">557</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">named_selects</span> </span></pre></div> |