summaryrefslogtreecommitdiffstats
path: root/docs/sqlglot/optimizer/merge_subqueries.html
diff options
context:
space:
mode:
Diffstat (limited to 'docs/sqlglot/optimizer/merge_subqueries.html')
-rw-r--r--docs/sqlglot/optimizer/merge_subqueries.html118
1 files changed, 66 insertions, 52 deletions
diff --git a/docs/sqlglot/optimizer/merge_subqueries.html b/docs/sqlglot/optimizer/merge_subqueries.html
index 8adfc14..1842f90 100644
--- a/docs/sqlglot/optimizer/merge_subqueries.html
+++ b/docs/sqlglot/optimizer/merge_subqueries.html
@@ -378,60 +378,74 @@
</span><span id="L-314"><a href="#L-314"><span class="linenos">314</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">where</span> <span class="ow">or</span> <span class="ow">not</span> <span class="n">where</span><span class="o">.</span><span class="n">this</span><span class="p">:</span>
</span><span id="L-315"><a href="#L-315"><span class="linenos">315</span></a> <span class="k">return</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="nb">isinstance</span><span class="p">(</span><span class="n">from_or_join</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-318"><a href="#L-318"><span class="linenos">318</span></a> <span class="c1"># Merge predicates from an outer join to the ON clause</span>
-</span><span id="L-319"><a href="#L-319"><span class="linenos">319</span></a> <span class="n">from_or_join</span><span class="o">.</span><span class="n">on</span><span class="p">(</span><span class="n">where</span><span class="o">.</span><span class="n">this</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-320"><a href="#L-320"><span class="linenos">320</span></a> <span class="n">from_or_join</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">&quot;on&quot;</span><span class="p">,</span> <span class="n">simplify</span><span class="p">(</span><span class="n">from_or_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">&quot;on&quot;</span><span class="p">)))</span>
-</span><span id="L-321"><a href="#L-321"><span class="linenos">321</span></a> <span class="k">else</span><span class="p">:</span>
-</span><span id="L-322"><a href="#L-322"><span class="linenos">322</span></a> <span class="n">outer_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">where</span><span class="p">(</span><span class="n">where</span><span class="o">.</span><span class="n">this</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-323"><a href="#L-323"><span class="linenos">323</span></a> <span class="n">outer_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">&quot;where&quot;</span><span class="p">,</span> <span class="n">simplify</span><span class="p">(</span><span class="n">outer_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">&quot;where&quot;</span><span class="p">)))</span>
+</span><span id="L-317"><a href="#L-317"><span class="linenos">317</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">outer_scope</span><span class="o">.</span><span class="n">expression</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">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">from_or_join</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-320"><a href="#L-320"><span class="linenos">320</span></a> <span class="c1"># Merge predicates from an outer join to the ON clause</span>
+</span><span id="L-321"><a href="#L-321"><span class="linenos">321</span></a> <span class="c1"># if it only has columns that are already joined</span>
+</span><span id="L-322"><a href="#L-322"><span class="linenos">322</span></a> <span class="n">from_</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">&quot;from&quot;</span><span class="p">)</span>
+</span><span id="L-323"><a href="#L-323"><span class="linenos">323</span></a> <span class="n">sources</span> <span class="o">=</span> <span class="p">{</span><span class="n">table</span><span class="o">.</span><span class="n">alias_or_name</span> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">from_</span><span class="o">.</span><span class="n">expressions</span><span class="p">}</span> <span class="k">if</span> <span class="n">from_</span> <span class="k">else</span> <span class="p">{}</span>
</span><span id="L-324"><a href="#L-324"><span class="linenos">324</span></a>
-</span><span id="L-325"><a href="#L-325"><span class="linenos">325</span></a>
-</span><span id="L-326"><a href="#L-326"><span class="linenos">326</span></a><span class="k">def</span> <span class="nf">_merge_order</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">):</span>
-</span><span id="L-327"><a href="#L-327"><span class="linenos">327</span></a><span class="w"> </span><span class="sd">&quot;&quot;&quot;</span>
-</span><span id="L-328"><a href="#L-328"><span class="linenos">328</span></a><span class="sd"> Merge ORDER clause of inner query into outer query.</span>
-</span><span id="L-329"><a href="#L-329"><span class="linenos">329</span></a>
-</span><span id="L-330"><a href="#L-330"><span class="linenos">330</span></a><span class="sd"> Args:</span>
-</span><span id="L-331"><a href="#L-331"><span class="linenos">331</span></a><span class="sd"> outer_scope (sqlglot.optimizer.scope.Scope)</span>
-</span><span id="L-332"><a href="#L-332"><span class="linenos">332</span></a><span class="sd"> inner_scope (sqlglot.optimizer.scope.Scope)</span>
-</span><span id="L-333"><a href="#L-333"><span class="linenos">333</span></a><span class="sd"> &quot;&quot;&quot;</span>
-</span><span id="L-334"><a href="#L-334"><span class="linenos">334</span></a> <span class="k">if</span> <span class="p">(</span>
-</span><span id="L-335"><a href="#L-335"><span class="linenos">335</span></a> <span class="nb">any</span><span class="p">(</span>
-</span><span id="L-336"><a href="#L-336"><span class="linenos">336</span></a> <span class="n">outer_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="n">arg</span><span class="p">)</span> <span class="k">for</span> <span class="n">arg</span> <span class="ow">in</span> <span class="p">[</span><span class="s2">&quot;group&quot;</span><span class="p">,</span> <span class="s2">&quot;distinct&quot;</span><span class="p">,</span> <span class="s2">&quot;having&quot;</span><span class="p">,</span> <span class="s2">&quot;order&quot;</span><span class="p">]</span>
-</span><span id="L-337"><a href="#L-337"><span class="linenos">337</span></a> <span class="p">)</span>
-</span><span id="L-338"><a href="#L-338"><span class="linenos">338</span></a> <span class="ow">or</span> <span class="nb">len</span><span class="p">(</span><span class="n">outer_scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">)</span> <span class="o">!=</span> <span class="mi">1</span>
-</span><span id="L-339"><a href="#L-339"><span class="linenos">339</span></a> <span class="ow">or</span> <span class="nb">any</span><span class="p">(</span><span class="n">expression</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="k">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="n">outer_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">expressions</span><span class="p">)</span>
-</span><span id="L-340"><a href="#L-340"><span class="linenos">340</span></a> <span class="p">):</span>
-</span><span id="L-341"><a href="#L-341"><span class="linenos">341</span></a> <span class="k">return</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">outer_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">&quot;order&quot;</span><span class="p">,</span> <span class="n">inner_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">&quot;order&quot;</span><span class="p">))</span>
-</span><span id="L-344"><a href="#L-344"><span class="linenos">344</span></a>
-</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="k">def</span> <span class="nf">_merge_hints</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">):</span>
-</span><span id="L-347"><a href="#L-347"><span class="linenos">347</span></a> <span class="n">inner_scope_hint</span> <span class="o">=</span> <span class="n">inner_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">&quot;hint&quot;</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">inner_scope_hint</span><span class="p">:</span>
-</span><span id="L-349"><a href="#L-349"><span class="linenos">349</span></a> <span class="k">return</span>
-</span><span id="L-350"><a href="#L-350"><span class="linenos">350</span></a> <span class="n">outer_scope_hint</span> <span class="o">=</span> <span class="n">outer_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">&quot;hint&quot;</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="n">outer_scope_hint</span><span class="p">:</span>
-</span><span id="L-352"><a href="#L-352"><span class="linenos">352</span></a> <span class="k">for</span> <span class="n">hint_expression</span> <span class="ow">in</span> <span class="n">inner_scope_hint</span><span class="o">.</span><span class="n">expressions</span><span class="p">:</span>
-</span><span id="L-353"><a href="#L-353"><span class="linenos">353</span></a> <span class="n">outer_scope_hint</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s2">&quot;expressions&quot;</span><span class="p">,</span> <span class="n">hint_expression</span><span class="p">)</span>
-</span><span id="L-354"><a href="#L-354"><span class="linenos">354</span></a> <span class="k">else</span><span class="p">:</span>
-</span><span id="L-355"><a href="#L-355"><span class="linenos">355</span></a> <span class="n">outer_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">&quot;hint&quot;</span><span class="p">,</span> <span class="n">inner_scope_hint</span><span class="p">)</span>
+</span><span id="L-325"><a href="#L-325"><span class="linenos">325</span></a> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">&quot;joins&quot;</span><span class="p">]:</span>
+</span><span id="L-326"><a href="#L-326"><span class="linenos">326</span></a> <span class="n">source</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-327"><a href="#L-327"><span class="linenos">327</span></a> <span class="n">sources</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">source</span><span class="p">)</span>
+</span><span id="L-328"><a href="#L-328"><span class="linenos">328</span></a> <span class="k">if</span> <span class="n">source</span> <span class="o">==</span> <span class="n">from_or_join</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">:</span>
+</span><span id="L-329"><a href="#L-329"><span class="linenos">329</span></a> <span class="k">break</span>
+</span><span id="L-330"><a href="#L-330"><span class="linenos">330</span></a>
+</span><span id="L-331"><a href="#L-331"><span class="linenos">331</span></a> <span class="k">if</span> <span class="nb">set</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">column_table_names</span><span class="p">(</span><span class="n">where</span><span class="o">.</span><span class="n">this</span><span class="p">))</span> <span class="o">&lt;=</span> <span class="n">sources</span><span class="p">:</span>
+</span><span id="L-332"><a href="#L-332"><span class="linenos">332</span></a> <span class="n">from_or_join</span><span class="o">.</span><span class="n">on</span><span class="p">(</span><span class="n">where</span><span class="o">.</span><span class="n">this</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-333"><a href="#L-333"><span class="linenos">333</span></a> <span class="n">from_or_join</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">&quot;on&quot;</span><span class="p">,</span> <span class="n">simplify</span><span class="p">(</span><span class="n">from_or_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">&quot;on&quot;</span><span class="p">)))</span>
+</span><span id="L-334"><a href="#L-334"><span class="linenos">334</span></a> <span class="k">return</span>
+</span><span id="L-335"><a href="#L-335"><span class="linenos">335</span></a>
+</span><span id="L-336"><a href="#L-336"><span class="linenos">336</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">where</span><span class="p">(</span><span class="n">where</span><span class="o">.</span><span class="n">this</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-337"><a href="#L-337"><span class="linenos">337</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">&quot;where&quot;</span><span class="p">,</span> <span class="n">simplify</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">&quot;where&quot;</span><span class="p">)))</span>
+</span><span id="L-338"><a href="#L-338"><span class="linenos">338</span></a>
+</span><span id="L-339"><a href="#L-339"><span class="linenos">339</span></a>
+</span><span id="L-340"><a href="#L-340"><span class="linenos">340</span></a><span class="k">def</span> <span class="nf">_merge_order</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">):</span>
+</span><span id="L-341"><a href="#L-341"><span class="linenos">341</span></a><span class="w"> </span><span class="sd">&quot;&quot;&quot;</span>
+</span><span id="L-342"><a href="#L-342"><span class="linenos">342</span></a><span class="sd"> Merge ORDER clause of inner query into outer query.</span>
+</span><span id="L-343"><a href="#L-343"><span class="linenos">343</span></a>
+</span><span id="L-344"><a href="#L-344"><span class="linenos">344</span></a><span class="sd"> Args:</span>
+</span><span id="L-345"><a href="#L-345"><span class="linenos">345</span></a><span class="sd"> outer_scope (sqlglot.optimizer.scope.Scope)</span>
+</span><span id="L-346"><a href="#L-346"><span class="linenos">346</span></a><span class="sd"> inner_scope (sqlglot.optimizer.scope.Scope)</span>
+</span><span id="L-347"><a href="#L-347"><span class="linenos">347</span></a><span class="sd"> &quot;&quot;&quot;</span>
+</span><span id="L-348"><a href="#L-348"><span class="linenos">348</span></a> <span class="k">if</span> <span class="p">(</span>
+</span><span id="L-349"><a href="#L-349"><span class="linenos">349</span></a> <span class="nb">any</span><span class="p">(</span>
+</span><span id="L-350"><a href="#L-350"><span class="linenos">350</span></a> <span class="n">outer_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="n">arg</span><span class="p">)</span> <span class="k">for</span> <span class="n">arg</span> <span class="ow">in</span> <span class="p">[</span><span class="s2">&quot;group&quot;</span><span class="p">,</span> <span class="s2">&quot;distinct&quot;</span><span class="p">,</span> <span class="s2">&quot;having&quot;</span><span class="p">,</span> <span class="s2">&quot;order&quot;</span><span class="p">]</span>
+</span><span id="L-351"><a href="#L-351"><span class="linenos">351</span></a> <span class="p">)</span>
+</span><span id="L-352"><a href="#L-352"><span class="linenos">352</span></a> <span class="ow">or</span> <span class="nb">len</span><span class="p">(</span><span class="n">outer_scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">)</span> <span class="o">!=</span> <span class="mi">1</span>
+</span><span id="L-353"><a href="#L-353"><span class="linenos">353</span></a> <span class="ow">or</span> <span class="nb">any</span><span class="p">(</span><span class="n">expression</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="k">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="n">outer_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">expressions</span><span class="p">)</span>
+</span><span id="L-354"><a href="#L-354"><span class="linenos">354</span></a> <span class="p">):</span>
+</span><span id="L-355"><a href="#L-355"><span class="linenos">355</span></a> <span class="k">return</span>
</span><span id="L-356"><a href="#L-356"><span class="linenos">356</span></a>
-</span><span id="L-357"><a href="#L-357"><span class="linenos">357</span></a>
-</span><span id="L-358"><a href="#L-358"><span class="linenos">358</span></a><span class="k">def</span> <span class="nf">_pop_cte</span><span class="p">(</span><span class="n">inner_scope</span><span class="p">):</span>
-</span><span id="L-359"><a href="#L-359"><span class="linenos">359</span></a><span class="w"> </span><span class="sd">&quot;&quot;&quot;</span>
-</span><span id="L-360"><a href="#L-360"><span class="linenos">360</span></a><span class="sd"> Remove CTE from the AST.</span>
-</span><span id="L-361"><a href="#L-361"><span class="linenos">361</span></a>
-</span><span id="L-362"><a href="#L-362"><span class="linenos">362</span></a><span class="sd"> Args:</span>
-</span><span id="L-363"><a href="#L-363"><span class="linenos">363</span></a><span class="sd"> inner_scope (sqlglot.optimizer.scope.Scope)</span>
-</span><span id="L-364"><a href="#L-364"><span class="linenos">364</span></a><span class="sd"> &quot;&quot;&quot;</span>
-</span><span id="L-365"><a href="#L-365"><span class="linenos">365</span></a> <span class="n">cte</span> <span class="o">=</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span>
-</span><span id="L-366"><a href="#L-366"><span class="linenos">366</span></a> <span class="n">with_</span> <span class="o">=</span> <span class="n">cte</span><span class="o">.</span><span class="n">parent</span>
-</span><span id="L-367"><a href="#L-367"><span class="linenos">367</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">with_</span><span class="o">.</span><span class="n">expressions</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span>
-</span><span id="L-368"><a href="#L-368"><span class="linenos">368</span></a> <span class="n">with_</span><span class="o">.</span><span class="n">pop</span><span class="p">()</span>
-</span><span id="L-369"><a href="#L-369"><span class="linenos">369</span></a> <span class="k">else</span><span class="p">:</span>
-</span><span id="L-370"><a href="#L-370"><span class="linenos">370</span></a> <span class="n">cte</span><span class="o">.</span><span class="n">pop</span><span class="p">()</span>
+</span><span id="L-357"><a href="#L-357"><span class="linenos">357</span></a> <span class="n">outer_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">&quot;order&quot;</span><span class="p">,</span> <span class="n">inner_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">&quot;order&quot;</span><span class="p">))</span>
+</span><span id="L-358"><a href="#L-358"><span class="linenos">358</span></a>
+</span><span id="L-359"><a href="#L-359"><span class="linenos">359</span></a>
+</span><span id="L-360"><a href="#L-360"><span class="linenos">360</span></a><span class="k">def</span> <span class="nf">_merge_hints</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">):</span>
+</span><span id="L-361"><a href="#L-361"><span class="linenos">361</span></a> <span class="n">inner_scope_hint</span> <span class="o">=</span> <span class="n">inner_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">&quot;hint&quot;</span><span class="p">)</span>
+</span><span id="L-362"><a href="#L-362"><span class="linenos">362</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">inner_scope_hint</span><span class="p">:</span>
+</span><span id="L-363"><a href="#L-363"><span class="linenos">363</span></a> <span class="k">return</span>
+</span><span id="L-364"><a href="#L-364"><span class="linenos">364</span></a> <span class="n">outer_scope_hint</span> <span class="o">=</span> <span class="n">outer_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">&quot;hint&quot;</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">outer_scope_hint</span><span class="p">:</span>
+</span><span id="L-366"><a href="#L-366"><span class="linenos">366</span></a> <span class="k">for</span> <span class="n">hint_expression</span> <span class="ow">in</span> <span class="n">inner_scope_hint</span><span class="o">.</span><span class="n">expressions</span><span class="p">:</span>
+</span><span id="L-367"><a href="#L-367"><span class="linenos">367</span></a> <span class="n">outer_scope_hint</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s2">&quot;expressions&quot;</span><span class="p">,</span> <span class="n">hint_expression</span><span class="p">)</span>
+</span><span id="L-368"><a href="#L-368"><span class="linenos">368</span></a> <span class="k">else</span><span class="p">:</span>
+</span><span id="L-369"><a href="#L-369"><span class="linenos">369</span></a> <span class="n">outer_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">&quot;hint&quot;</span><span class="p">,</span> <span class="n">inner_scope_hint</span><span class="p">)</span>
+</span><span id="L-370"><a href="#L-370"><span class="linenos">370</span></a>
+</span><span id="L-371"><a href="#L-371"><span class="linenos">371</span></a>
+</span><span id="L-372"><a href="#L-372"><span class="linenos">372</span></a><span class="k">def</span> <span class="nf">_pop_cte</span><span class="p">(</span><span class="n">inner_scope</span><span class="p">):</span>
+</span><span id="L-373"><a href="#L-373"><span class="linenos">373</span></a><span class="w"> </span><span class="sd">&quot;&quot;&quot;</span>
+</span><span id="L-374"><a href="#L-374"><span class="linenos">374</span></a><span class="sd"> Remove CTE from the AST.</span>
+</span><span id="L-375"><a href="#L-375"><span class="linenos">375</span></a>
+</span><span id="L-376"><a href="#L-376"><span class="linenos">376</span></a><span class="sd"> Args:</span>
+</span><span id="L-377"><a href="#L-377"><span class="linenos">377</span></a><span class="sd"> inner_scope (sqlglot.optimizer.scope.Scope)</span>
+</span><span id="L-378"><a href="#L-378"><span class="linenos">378</span></a><span class="sd"> &quot;&quot;&quot;</span>
+</span><span id="L-379"><a href="#L-379"><span class="linenos">379</span></a> <span class="n">cte</span> <span class="o">=</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span>
+</span><span id="L-380"><a href="#L-380"><span class="linenos">380</span></a> <span class="n">with_</span> <span class="o">=</span> <span class="n">cte</span><span class="o">.</span><span class="n">parent</span>
+</span><span id="L-381"><a href="#L-381"><span class="linenos">381</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">with_</span><span class="o">.</span><span class="n">expressions</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span>
+</span><span id="L-382"><a href="#L-382"><span class="linenos">382</span></a> <span class="n">with_</span><span class="o">.</span><span class="n">pop</span><span class="p">()</span>
+</span><span id="L-383"><a href="#L-383"><span class="linenos">383</span></a> <span class="k">else</span><span class="p">:</span>
+</span><span id="L-384"><a href="#L-384"><span class="linenos">384</span></a> <span class="n">cte</span><span class="o">.</span><span class="n">pop</span><span class="p">()</span>
</span></pre></div>