sqlglot.dialects.teradata
1from __future__ import annotations 2 3from sqlglot import exp, generator, parser, tokens 4from sqlglot.dialects.dialect import Dialect, min_or_least 5from sqlglot.tokens import TokenType 6 7 8class Teradata(Dialect): 9 class Tokenizer(tokens.Tokenizer): 10 # https://docs.teradata.com/r/Teradata-Database-SQL-Functions-Operators-Expressions-and-Predicates/March-2017/Comparison-Operators-and-Functions/Comparison-Operators/ANSI-Compliance 11 KEYWORDS = { 12 **tokens.Tokenizer.KEYWORDS, 13 "BYTEINT": TokenType.SMALLINT, 14 "SEL": TokenType.SELECT, 15 "INS": TokenType.INSERT, 16 "MOD": TokenType.MOD, 17 "LT": TokenType.LT, 18 "LE": TokenType.LTE, 19 "GT": TokenType.GT, 20 "GE": TokenType.GTE, 21 "^=": TokenType.NEQ, 22 "NE": TokenType.NEQ, 23 "NOT=": TokenType.NEQ, 24 "ST_GEOMETRY": TokenType.GEOMETRY, 25 } 26 27 # teradata does not support % for modulus 28 SINGLE_TOKENS = {**tokens.Tokenizer.SINGLE_TOKENS} 29 SINGLE_TOKENS.pop("%") 30 31 class Parser(parser.Parser): 32 CHARSET_TRANSLATORS = { 33 "GRAPHIC_TO_KANJISJIS", 34 "GRAPHIC_TO_LATIN", 35 "GRAPHIC_TO_UNICODE", 36 "GRAPHIC_TO_UNICODE_PadSpace", 37 "KANJI1_KanjiEBCDIC_TO_UNICODE", 38 "KANJI1_KanjiEUC_TO_UNICODE", 39 "KANJI1_KANJISJIS_TO_UNICODE", 40 "KANJI1_SBC_TO_UNICODE", 41 "KANJISJIS_TO_GRAPHIC", 42 "KANJISJIS_TO_LATIN", 43 "KANJISJIS_TO_UNICODE", 44 "LATIN_TO_GRAPHIC", 45 "LATIN_TO_KANJISJIS", 46 "LATIN_TO_UNICODE", 47 "LOCALE_TO_UNICODE", 48 "UNICODE_TO_GRAPHIC", 49 "UNICODE_TO_GRAPHIC_PadGraphic", 50 "UNICODE_TO_GRAPHIC_VarGraphic", 51 "UNICODE_TO_KANJI1_KanjiEBCDIC", 52 "UNICODE_TO_KANJI1_KanjiEUC", 53 "UNICODE_TO_KANJI1_KANJISJIS", 54 "UNICODE_TO_KANJI1_SBC", 55 "UNICODE_TO_KANJISJIS", 56 "UNICODE_TO_LATIN", 57 "UNICODE_TO_LOCALE", 58 "UNICODE_TO_UNICODE_FoldSpace", 59 "UNICODE_TO_UNICODE_Fullwidth", 60 "UNICODE_TO_UNICODE_Halfwidth", 61 "UNICODE_TO_UNICODE_NFC", 62 "UNICODE_TO_UNICODE_NFD", 63 "UNICODE_TO_UNICODE_NFKC", 64 "UNICODE_TO_UNICODE_NFKD", 65 } 66 67 FUNC_TOKENS = {*parser.Parser.FUNC_TOKENS} 68 FUNC_TOKENS.remove(TokenType.REPLACE) 69 70 STATEMENT_PARSERS = { 71 **parser.Parser.STATEMENT_PARSERS, # type: ignore 72 TokenType.REPLACE: lambda self: self._parse_create(), 73 } 74 75 FUNCTION_PARSERS = { 76 **parser.Parser.FUNCTION_PARSERS, # type: ignore 77 "RANGE_N": lambda self: self._parse_rangen(), 78 "TRANSLATE": lambda self: self._parse_translate(self.STRICT_CAST), 79 } 80 81 def _parse_translate(self, strict: bool) -> exp.Expression: 82 this = self._parse_conjunction() 83 84 if not self._match(TokenType.USING): 85 self.raise_error("Expected USING in TRANSLATE") 86 87 if self._match_texts(self.CHARSET_TRANSLATORS): 88 charset_split = self._prev.text.split("_TO_") 89 to = self.expression(exp.CharacterSet, this=charset_split[1]) 90 else: 91 self.raise_error("Expected a character set translator after USING in TRANSLATE") 92 93 return self.expression(exp.Cast if strict else exp.TryCast, this=this, to=to) 94 95 # FROM before SET in Teradata UPDATE syntax 96 # https://docs.teradata.com/r/Enterprise_IntelliFlex_VMware/Teradata-VantageTM-SQL-Data-Manipulation-Language-17.20/Statement-Syntax/UPDATE/UPDATE-Syntax-Basic-Form-FROM-Clause 97 def _parse_update(self) -> exp.Expression: 98 return self.expression( 99 exp.Update, 100 **{ # type: ignore 101 "this": self._parse_table(alias_tokens=self.UPDATE_ALIAS_TOKENS), 102 "from": self._parse_from(), 103 "expressions": self._match(TokenType.SET) 104 and self._parse_csv(self._parse_equality), 105 "where": self._parse_where(), 106 }, 107 ) 108 109 def _parse_rangen(self): 110 this = self._parse_id_var() 111 self._match(TokenType.BETWEEN) 112 113 expressions = self._parse_csv(self._parse_conjunction) 114 each = self._match_text_seq("EACH") and self._parse_conjunction() 115 116 return self.expression(exp.RangeN, this=this, expressions=expressions, each=each) 117 118 class Generator(generator.Generator): 119 TYPE_MAPPING = { 120 **generator.Generator.TYPE_MAPPING, # type: ignore 121 exp.DataType.Type.GEOMETRY: "ST_GEOMETRY", 122 } 123 124 PROPERTIES_LOCATION = { 125 **generator.Generator.PROPERTIES_LOCATION, # type: ignore 126 exp.PartitionedByProperty: exp.Properties.Location.POST_INDEX, 127 } 128 129 TRANSFORMS = { 130 **generator.Generator.TRANSFORMS, 131 exp.Min: min_or_least, 132 exp.ToChar: lambda self, e: self.function_fallback_sql(e), 133 } 134 135 def partitionedbyproperty_sql(self, expression: exp.PartitionedByProperty) -> str: 136 return f"PARTITION BY {self.sql(expression, 'this')}" 137 138 # FROM before SET in Teradata UPDATE syntax 139 # https://docs.teradata.com/r/Enterprise_IntelliFlex_VMware/Teradata-VantageTM-SQL-Data-Manipulation-Language-17.20/Statement-Syntax/UPDATE/UPDATE-Syntax-Basic-Form-FROM-Clause 140 def update_sql(self, expression: exp.Update) -> str: 141 this = self.sql(expression, "this") 142 from_sql = self.sql(expression, "from") 143 set_sql = self.expressions(expression, flat=True) 144 where_sql = self.sql(expression, "where") 145 sql = f"UPDATE {this}{from_sql} SET {set_sql}{where_sql}" 146 return self.prepend_ctes(expression, sql) 147 148 def mod_sql(self, expression: exp.Mod) -> str: 149 return self.binary(expression, "MOD") 150 151 def datatype_sql(self, expression: exp.DataType) -> str: 152 type_sql = super().datatype_sql(expression) 153 prefix_sql = expression.args.get("prefix") 154 return f"SYSUDTLIB.{type_sql}" if prefix_sql else type_sql 155 156 def rangen_sql(self, expression: exp.RangeN) -> str: 157 this = self.sql(expression, "this") 158 expressions_sql = self.expressions(expression) 159 each_sql = self.sql(expression, "each") 160 each_sql = f" EACH {each_sql}" if each_sql else "" 161 162 return f"RANGE_N({this} BETWEEN {expressions_sql}{each_sql})"
9class Teradata(Dialect): 10 class Tokenizer(tokens.Tokenizer): 11 # https://docs.teradata.com/r/Teradata-Database-SQL-Functions-Operators-Expressions-and-Predicates/March-2017/Comparison-Operators-and-Functions/Comparison-Operators/ANSI-Compliance 12 KEYWORDS = { 13 **tokens.Tokenizer.KEYWORDS, 14 "BYTEINT": TokenType.SMALLINT, 15 "SEL": TokenType.SELECT, 16 "INS": TokenType.INSERT, 17 "MOD": TokenType.MOD, 18 "LT": TokenType.LT, 19 "LE": TokenType.LTE, 20 "GT": TokenType.GT, 21 "GE": TokenType.GTE, 22 "^=": TokenType.NEQ, 23 "NE": TokenType.NEQ, 24 "NOT=": TokenType.NEQ, 25 "ST_GEOMETRY": TokenType.GEOMETRY, 26 } 27 28 # teradata does not support % for modulus 29 SINGLE_TOKENS = {**tokens.Tokenizer.SINGLE_TOKENS} 30 SINGLE_TOKENS.pop("%") 31 32 class Parser(parser.Parser): 33 CHARSET_TRANSLATORS = { 34 "GRAPHIC_TO_KANJISJIS", 35 "GRAPHIC_TO_LATIN", 36 "GRAPHIC_TO_UNICODE", 37 "GRAPHIC_TO_UNICODE_PadSpace", 38 "KANJI1_KanjiEBCDIC_TO_UNICODE", 39 "KANJI1_KanjiEUC_TO_UNICODE", 40 "KANJI1_KANJISJIS_TO_UNICODE", 41 "KANJI1_SBC_TO_UNICODE", 42 "KANJISJIS_TO_GRAPHIC", 43 "KANJISJIS_TO_LATIN", 44 "KANJISJIS_TO_UNICODE", 45 "LATIN_TO_GRAPHIC", 46 "LATIN_TO_KANJISJIS", 47 "LATIN_TO_UNICODE", 48 "LOCALE_TO_UNICODE", 49 "UNICODE_TO_GRAPHIC", 50 "UNICODE_TO_GRAPHIC_PadGraphic", 51 "UNICODE_TO_GRAPHIC_VarGraphic", 52 "UNICODE_TO_KANJI1_KanjiEBCDIC", 53 "UNICODE_TO_KANJI1_KanjiEUC", 54 "UNICODE_TO_KANJI1_KANJISJIS", 55 "UNICODE_TO_KANJI1_SBC", 56 "UNICODE_TO_KANJISJIS", 57 "UNICODE_TO_LATIN", 58 "UNICODE_TO_LOCALE", 59 "UNICODE_TO_UNICODE_FoldSpace", 60 "UNICODE_TO_UNICODE_Fullwidth", 61 "UNICODE_TO_UNICODE_Halfwidth", 62 "UNICODE_TO_UNICODE_NFC", 63 "UNICODE_TO_UNICODE_NFD", 64 "UNICODE_TO_UNICODE_NFKC", 65 "UNICODE_TO_UNICODE_NFKD", 66 } 67 68 FUNC_TOKENS = {*parser.Parser.FUNC_TOKENS} 69 FUNC_TOKENS.remove(TokenType.REPLACE) 70 71 STATEMENT_PARSERS = { 72 **parser.Parser.STATEMENT_PARSERS, # type: ignore 73 TokenType.REPLACE: lambda self: self._parse_create(), 74 } 75 76 FUNCTION_PARSERS = { 77 **parser.Parser.FUNCTION_PARSERS, # type: ignore 78 "RANGE_N": lambda self: self._parse_rangen(), 79 "TRANSLATE": lambda self: self._parse_translate(self.STRICT_CAST), 80 } 81 82 def _parse_translate(self, strict: bool) -> exp.Expression: 83 this = self._parse_conjunction() 84 85 if not self._match(TokenType.USING): 86 self.raise_error("Expected USING in TRANSLATE") 87 88 if self._match_texts(self.CHARSET_TRANSLATORS): 89 charset_split = self._prev.text.split("_TO_") 90 to = self.expression(exp.CharacterSet, this=charset_split[1]) 91 else: 92 self.raise_error("Expected a character set translator after USING in TRANSLATE") 93 94 return self.expression(exp.Cast if strict else exp.TryCast, this=this, to=to) 95 96 # FROM before SET in Teradata UPDATE syntax 97 # https://docs.teradata.com/r/Enterprise_IntelliFlex_VMware/Teradata-VantageTM-SQL-Data-Manipulation-Language-17.20/Statement-Syntax/UPDATE/UPDATE-Syntax-Basic-Form-FROM-Clause 98 def _parse_update(self) -> exp.Expression: 99 return self.expression( 100 exp.Update, 101 **{ # type: ignore 102 "this": self._parse_table(alias_tokens=self.UPDATE_ALIAS_TOKENS), 103 "from": self._parse_from(), 104 "expressions": self._match(TokenType.SET) 105 and self._parse_csv(self._parse_equality), 106 "where": self._parse_where(), 107 }, 108 ) 109 110 def _parse_rangen(self): 111 this = self._parse_id_var() 112 self._match(TokenType.BETWEEN) 113 114 expressions = self._parse_csv(self._parse_conjunction) 115 each = self._match_text_seq("EACH") and self._parse_conjunction() 116 117 return self.expression(exp.RangeN, this=this, expressions=expressions, each=each) 118 119 class Generator(generator.Generator): 120 TYPE_MAPPING = { 121 **generator.Generator.TYPE_MAPPING, # type: ignore 122 exp.DataType.Type.GEOMETRY: "ST_GEOMETRY", 123 } 124 125 PROPERTIES_LOCATION = { 126 **generator.Generator.PROPERTIES_LOCATION, # type: ignore 127 exp.PartitionedByProperty: exp.Properties.Location.POST_INDEX, 128 } 129 130 TRANSFORMS = { 131 **generator.Generator.TRANSFORMS, 132 exp.Min: min_or_least, 133 exp.ToChar: lambda self, e: self.function_fallback_sql(e), 134 } 135 136 def partitionedbyproperty_sql(self, expression: exp.PartitionedByProperty) -> str: 137 return f"PARTITION BY {self.sql(expression, 'this')}" 138 139 # FROM before SET in Teradata UPDATE syntax 140 # https://docs.teradata.com/r/Enterprise_IntelliFlex_VMware/Teradata-VantageTM-SQL-Data-Manipulation-Language-17.20/Statement-Syntax/UPDATE/UPDATE-Syntax-Basic-Form-FROM-Clause 141 def update_sql(self, expression: exp.Update) -> str: 142 this = self.sql(expression, "this") 143 from_sql = self.sql(expression, "from") 144 set_sql = self.expressions(expression, flat=True) 145 where_sql = self.sql(expression, "where") 146 sql = f"UPDATE {this}{from_sql} SET {set_sql}{where_sql}" 147 return self.prepend_ctes(expression, sql) 148 149 def mod_sql(self, expression: exp.Mod) -> str: 150 return self.binary(expression, "MOD") 151 152 def datatype_sql(self, expression: exp.DataType) -> str: 153 type_sql = super().datatype_sql(expression) 154 prefix_sql = expression.args.get("prefix") 155 return f"SYSUDTLIB.{type_sql}" if prefix_sql else type_sql 156 157 def rangen_sql(self, expression: exp.RangeN) -> str: 158 this = self.sql(expression, "this") 159 expressions_sql = self.expressions(expression) 160 each_sql = self.sql(expression, "each") 161 each_sql = f" EACH {each_sql}" if each_sql else "" 162 163 return f"RANGE_N({this} BETWEEN {expressions_sql}{each_sql})"
10 class Tokenizer(tokens.Tokenizer): 11 # https://docs.teradata.com/r/Teradata-Database-SQL-Functions-Operators-Expressions-and-Predicates/March-2017/Comparison-Operators-and-Functions/Comparison-Operators/ANSI-Compliance 12 KEYWORDS = { 13 **tokens.Tokenizer.KEYWORDS, 14 "BYTEINT": TokenType.SMALLINT, 15 "SEL": TokenType.SELECT, 16 "INS": TokenType.INSERT, 17 "MOD": TokenType.MOD, 18 "LT": TokenType.LT, 19 "LE": TokenType.LTE, 20 "GT": TokenType.GT, 21 "GE": TokenType.GTE, 22 "^=": TokenType.NEQ, 23 "NE": TokenType.NEQ, 24 "NOT=": TokenType.NEQ, 25 "ST_GEOMETRY": TokenType.GEOMETRY, 26 } 27 28 # teradata does not support % for modulus 29 SINGLE_TOKENS = {**tokens.Tokenizer.SINGLE_TOKENS} 30 SINGLE_TOKENS.pop("%")
Inherited Members
32 class Parser(parser.Parser): 33 CHARSET_TRANSLATORS = { 34 "GRAPHIC_TO_KANJISJIS", 35 "GRAPHIC_TO_LATIN", 36 "GRAPHIC_TO_UNICODE", 37 "GRAPHIC_TO_UNICODE_PadSpace", 38 "KANJI1_KanjiEBCDIC_TO_UNICODE", 39 "KANJI1_KanjiEUC_TO_UNICODE", 40 "KANJI1_KANJISJIS_TO_UNICODE", 41 "KANJI1_SBC_TO_UNICODE", 42 "KANJISJIS_TO_GRAPHIC", 43 "KANJISJIS_TO_LATIN", 44 "KANJISJIS_TO_UNICODE", 45 "LATIN_TO_GRAPHIC", 46 "LATIN_TO_KANJISJIS", 47 "LATIN_TO_UNICODE", 48 "LOCALE_TO_UNICODE", 49 "UNICODE_TO_GRAPHIC", 50 "UNICODE_TO_GRAPHIC_PadGraphic", 51 "UNICODE_TO_GRAPHIC_VarGraphic", 52 "UNICODE_TO_KANJI1_KanjiEBCDIC", 53 "UNICODE_TO_KANJI1_KanjiEUC", 54 "UNICODE_TO_KANJI1_KANJISJIS", 55 "UNICODE_TO_KANJI1_SBC", 56 "UNICODE_TO_KANJISJIS", 57 "UNICODE_TO_LATIN", 58 "UNICODE_TO_LOCALE", 59 "UNICODE_TO_UNICODE_FoldSpace", 60 "UNICODE_TO_UNICODE_Fullwidth", 61 "UNICODE_TO_UNICODE_Halfwidth", 62 "UNICODE_TO_UNICODE_NFC", 63 "UNICODE_TO_UNICODE_NFD", 64 "UNICODE_TO_UNICODE_NFKC", 65 "UNICODE_TO_UNICODE_NFKD", 66 } 67 68 FUNC_TOKENS = {*parser.Parser.FUNC_TOKENS} 69 FUNC_TOKENS.remove(TokenType.REPLACE) 70 71 STATEMENT_PARSERS = { 72 **parser.Parser.STATEMENT_PARSERS, # type: ignore 73 TokenType.REPLACE: lambda self: self._parse_create(), 74 } 75 76 FUNCTION_PARSERS = { 77 **parser.Parser.FUNCTION_PARSERS, # type: ignore 78 "RANGE_N": lambda self: self._parse_rangen(), 79 "TRANSLATE": lambda self: self._parse_translate(self.STRICT_CAST), 80 } 81 82 def _parse_translate(self, strict: bool) -> exp.Expression: 83 this = self._parse_conjunction() 84 85 if not self._match(TokenType.USING): 86 self.raise_error("Expected USING in TRANSLATE") 87 88 if self._match_texts(self.CHARSET_TRANSLATORS): 89 charset_split = self._prev.text.split("_TO_") 90 to = self.expression(exp.CharacterSet, this=charset_split[1]) 91 else: 92 self.raise_error("Expected a character set translator after USING in TRANSLATE") 93 94 return self.expression(exp.Cast if strict else exp.TryCast, this=this, to=to) 95 96 # FROM before SET in Teradata UPDATE syntax 97 # https://docs.teradata.com/r/Enterprise_IntelliFlex_VMware/Teradata-VantageTM-SQL-Data-Manipulation-Language-17.20/Statement-Syntax/UPDATE/UPDATE-Syntax-Basic-Form-FROM-Clause 98 def _parse_update(self) -> exp.Expression: 99 return self.expression( 100 exp.Update, 101 **{ # type: ignore 102 "this": self._parse_table(alias_tokens=self.UPDATE_ALIAS_TOKENS), 103 "from": self._parse_from(), 104 "expressions": self._match(TokenType.SET) 105 and self._parse_csv(self._parse_equality), 106 "where": self._parse_where(), 107 }, 108 ) 109 110 def _parse_rangen(self): 111 this = self._parse_id_var() 112 self._match(TokenType.BETWEEN) 113 114 expressions = self._parse_csv(self._parse_conjunction) 115 each = self._match_text_seq("EACH") and self._parse_conjunction() 116 117 return self.expression(exp.RangeN, this=this, expressions=expressions, each=each)
Parser consumes a list of tokens produced by the sqlglot.tokens.Tokenizer
and produces
a parsed syntax tree.
Arguments:
- error_level: the desired error level. Default: ErrorLevel.RAISE
- error_message_context: determines the amount of context to capture from a query string when displaying the error message (in number of characters). Default: 50.
- index_offset: Index offset for arrays eg ARRAY[0] vs ARRAY[1] as the head of a list. Default: 0
- alias_post_tablesample: If the table alias comes after tablesample. Default: False
- max_errors: Maximum number of error messages to include in a raised ParseError. This is only relevant if error_level is ErrorLevel.RAISE. Default: 3
- null_ordering: Indicates the default null ordering method to use if not explicitly set. Options are "nulls_are_small", "nulls_are_large", "nulls_are_last". Default: "nulls_are_small"
Inherited Members
119 class Generator(generator.Generator): 120 TYPE_MAPPING = { 121 **generator.Generator.TYPE_MAPPING, # type: ignore 122 exp.DataType.Type.GEOMETRY: "ST_GEOMETRY", 123 } 124 125 PROPERTIES_LOCATION = { 126 **generator.Generator.PROPERTIES_LOCATION, # type: ignore 127 exp.PartitionedByProperty: exp.Properties.Location.POST_INDEX, 128 } 129 130 TRANSFORMS = { 131 **generator.Generator.TRANSFORMS, 132 exp.Min: min_or_least, 133 exp.ToChar: lambda self, e: self.function_fallback_sql(e), 134 } 135 136 def partitionedbyproperty_sql(self, expression: exp.PartitionedByProperty) -> str: 137 return f"PARTITION BY {self.sql(expression, 'this')}" 138 139 # FROM before SET in Teradata UPDATE syntax 140 # https://docs.teradata.com/r/Enterprise_IntelliFlex_VMware/Teradata-VantageTM-SQL-Data-Manipulation-Language-17.20/Statement-Syntax/UPDATE/UPDATE-Syntax-Basic-Form-FROM-Clause 141 def update_sql(self, expression: exp.Update) -> str: 142 this = self.sql(expression, "this") 143 from_sql = self.sql(expression, "from") 144 set_sql = self.expressions(expression, flat=True) 145 where_sql = self.sql(expression, "where") 146 sql = f"UPDATE {this}{from_sql} SET {set_sql}{where_sql}" 147 return self.prepend_ctes(expression, sql) 148 149 def mod_sql(self, expression: exp.Mod) -> str: 150 return self.binary(expression, "MOD") 151 152 def datatype_sql(self, expression: exp.DataType) -> str: 153 type_sql = super().datatype_sql(expression) 154 prefix_sql = expression.args.get("prefix") 155 return f"SYSUDTLIB.{type_sql}" if prefix_sql else type_sql 156 157 def rangen_sql(self, expression: exp.RangeN) -> str: 158 this = self.sql(expression, "this") 159 expressions_sql = self.expressions(expression) 160 each_sql = self.sql(expression, "each") 161 each_sql = f" EACH {each_sql}" if each_sql else "" 162 163 return f"RANGE_N({this} BETWEEN {expressions_sql}{each_sql})"
Generator interprets the given syntax tree and produces a SQL string as an output.
Arguments:
- time_mapping (dict): the dictionary of custom time mappings in which the key represents a python time format and the output the target time format
- time_trie (trie): a trie of the time_mapping keys
- pretty (bool): if set to True the returned string will be formatted. Default: False.
- quote_start (str): specifies which starting character to use to delimit quotes. Default: '.
- quote_end (str): specifies which ending character to use to delimit quotes. Default: '.
- identifier_start (str): specifies which starting character to use to delimit identifiers. Default: ".
- identifier_end (str): specifies which ending character to use to delimit identifiers. Default: ".
- identify (bool | str): 'always': always quote, 'safe': quote identifiers if they don't contain an upcase, True defaults to always.
- normalize (bool): if set to True all identifiers will lower cased
- string_escape (str): specifies a string escape character. Default: '.
- identifier_escape (str): specifies an identifier escape character. Default: ".
- pad (int): determines padding in a formatted string. Default: 2.
- indent (int): determines the size of indentation in a formatted string. Default: 4.
- unnest_column_only (bool): if true unnest table aliases are considered only as column aliases
- normalize_functions (str): normalize function names, "upper", "lower", or None Default: "upper"
- alias_post_tablesample (bool): if the table alias comes after tablesample Default: False
- unsupported_level (ErrorLevel): determines the generator's behavior when it encounters unsupported expressions. Default ErrorLevel.WARN.
- null_ordering (str): Indicates the default null ordering method to use if not explicitly set. Options are "nulls_are_small", "nulls_are_large", "nulls_are_last". Default: "nulls_are_small"
- max_unsupported (int): Maximum number of unsupported messages to include in a raised UnsupportedError. This is only relevant if unsupported_level is ErrorLevel.RAISE. Default: 3
- leading_comma (bool): if the the comma is leading or trailing in select statements Default: False
- max_text_width: The max number of characters in a segment before creating new lines in pretty mode. The default is on the smaller end because the length only represents a segment and not the true line length. Default: 80
- comments: Whether or not to preserve comments in the output SQL code. Default: True
141 def update_sql(self, expression: exp.Update) -> str: 142 this = self.sql(expression, "this") 143 from_sql = self.sql(expression, "from") 144 set_sql = self.expressions(expression, flat=True) 145 where_sql = self.sql(expression, "where") 146 sql = f"UPDATE {this}{from_sql} SET {set_sql}{where_sql}" 147 return self.prepend_ctes(expression, sql)
157 def rangen_sql(self, expression: exp.RangeN) -> str: 158 this = self.sql(expression, "this") 159 expressions_sql = self.expressions(expression) 160 each_sql = self.sql(expression, "each") 161 each_sql = f" EACH {each_sql}" if each_sql else "" 162 163 return f"RANGE_N({this} BETWEEN {expressions_sql}{each_sql})"
Inherited Members
- sqlglot.generator.Generator
- Generator
- generate
- unsupported
- sep
- seg
- pad_comment
- maybe_comment
- wrap
- no_identify
- normalize_func
- indent
- sql
- uncache_sql
- cache_sql
- characterset_sql
- column_sql
- columndef_sql
- columnconstraint_sql
- autoincrementcolumnconstraint_sql
- compresscolumnconstraint_sql
- generatedasidentitycolumnconstraint_sql
- notnullcolumnconstraint_sql
- primarykeycolumnconstraint_sql
- uniquecolumnconstraint_sql
- create_sql
- describe_sql
- prepend_ctes
- with_sql
- cte_sql
- tablealias_sql
- bitstring_sql
- hexstring_sql
- directory_sql
- delete_sql
- drop_sql
- except_sql
- except_op
- fetch_sql
- filter_sql
- hint_sql
- index_sql
- identifier_sql
- national_sql
- partition_sql
- properties_sql
- root_properties
- properties
- with_properties
- locate_properties
- property_sql
- likeproperty_sql
- fallbackproperty_sql
- journalproperty_sql
- freespaceproperty_sql
- afterjournalproperty_sql
- checksumproperty_sql
- mergeblockratioproperty_sql
- datablocksizeproperty_sql
- blockcompressionproperty_sql
- isolatedloadingproperty_sql
- lockingproperty_sql
- withdataproperty_sql
- insert_sql
- intersect_sql
- intersect_op
- introducer_sql
- pseudotype_sql
- returning_sql
- rowformatdelimitedproperty_sql
- table_sql
- tablesample_sql
- pivot_sql
- tuple_sql
- values_sql
- var_sql
- into_sql
- from_sql
- group_sql
- having_sql
- join_sql
- lambda_sql
- lateral_sql
- limit_sql
- offset_sql
- setitem_sql
- set_sql
- lock_sql
- literal_sql
- loaddata_sql
- null_sql
- boolean_sql
- order_sql
- cluster_sql
- distribute_sql
- sort_sql
- ordered_sql
- matchrecognize_sql
- query_modifiers
- select_sql
- schema_sql
- star_sql
- structkwarg_sql
- parameter_sql
- sessionparameter_sql
- placeholder_sql
- subquery_sql
- qualify_sql
- union_sql
- union_op
- unnest_sql
- where_sql
- window_sql
- partition_by_sql
- window_spec_sql
- withingroup_sql
- between_sql
- bracket_sql
- all_sql
- any_sql
- exists_sql
- case_sql
- constraint_sql
- extract_sql
- trim_sql
- concat_sql
- check_sql
- foreignkey_sql
- primarykey_sql
- unique_sql
- if_sql
- in_sql
- in_unnest_op
- interval_sql
- return_sql
- reference_sql
- anonymous_sql
- paren_sql
- neg_sql
- not_sql
- alias_sql
- aliases_sql
- attimezone_sql
- add_sql
- and_sql
- connector_sql
- bitwiseand_sql
- bitwiseleftshift_sql
- bitwisenot_sql
- bitwiseor_sql
- bitwiserightshift_sql
- bitwisexor_sql
- cast_sql
- currentdate_sql
- collate_sql
- command_sql
- comment_sql
- transaction_sql
- commit_sql
- rollback_sql
- altercolumn_sql
- renametable_sql
- altertable_sql
- droppartition_sql
- addconstraint_sql
- distinct_sql
- ignorenulls_sql
- respectnulls_sql
- intdiv_sql
- dpipe_sql
- div_sql
- overlaps_sql
- distance_sql
- dot_sql
- eq_sql
- escape_sql
- glob_sql
- gt_sql
- gte_sql
- ilike_sql
- is_sql
- like_sql
- similarto_sql
- lt_sql
- lte_sql
- mul_sql
- neq_sql
- nullsafeeq_sql
- nullsafeneq_sql
- or_sql
- slice_sql
- sub_sql
- trycast_sql
- use_sql
- binary
- function_fallback_sql
- func
- format_args
- text_width
- format_time
- expressions
- op_expressions
- naked_property
- set_operation
- tag_sql
- token_sql
- userdefinedfunction_sql
- joinhint_sql
- kwarg_sql
- when_sql
- merge_sql
- tochar_sql