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sqlglot.dialects.sqlite

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  1from __future__ import annotations
  2
  3from sqlglot import exp, generator, parser, tokens, transforms
  4from sqlglot.dialects.dialect import (
  5    Dialect,
  6    arrow_json_extract_scalar_sql,
  7    arrow_json_extract_sql,
  8    concat_to_dpipe_sql,
  9    count_if_to_sum,
 10    no_ilike_sql,
 11    no_pivot_sql,
 12    no_tablesample_sql,
 13    no_trycast_sql,
 14    rename_func,
 15)
 16from sqlglot.tokens import TokenType
 17
 18
 19def _date_add_sql(self: generator.Generator, expression: exp.DateAdd) -> str:
 20    modifier = expression.expression
 21    modifier = modifier.name if modifier.is_string else self.sql(modifier)
 22    unit = expression.args.get("unit")
 23    modifier = f"'{modifier} {unit.name}'" if unit else f"'{modifier}'"
 24    return self.func("DATE", expression.this, modifier)
 25
 26
 27def _transform_create(expression: exp.Expression) -> exp.Expression:
 28    """Move primary key to a column and enforce auto_increment on primary keys."""
 29    schema = expression.this
 30
 31    if isinstance(expression, exp.Create) and isinstance(schema, exp.Schema):
 32        defs = {}
 33        primary_key = None
 34
 35        for e in schema.expressions:
 36            if isinstance(e, exp.ColumnDef):
 37                defs[e.name] = e
 38            elif isinstance(e, exp.PrimaryKey):
 39                primary_key = e
 40
 41        if primary_key and len(primary_key.expressions) == 1:
 42            column = defs[primary_key.expressions[0].name]
 43            column.append(
 44                "constraints", exp.ColumnConstraint(kind=exp.PrimaryKeyColumnConstraint())
 45            )
 46            schema.expressions.remove(primary_key)
 47        else:
 48            for column in defs.values():
 49                auto_increment = None
 50                for constraint in column.constraints.copy():
 51                    if isinstance(constraint.kind, exp.PrimaryKeyColumnConstraint):
 52                        break
 53                    if isinstance(constraint.kind, exp.AutoIncrementColumnConstraint):
 54                        auto_increment = constraint
 55                if auto_increment:
 56                    column.constraints.remove(auto_increment)
 57
 58    return expression
 59
 60
 61class SQLite(Dialect):
 62    # https://sqlite.org/forum/forumpost/5e575586ac5c711b?raw
 63    RESOLVES_IDENTIFIERS_AS_UPPERCASE = None
 64
 65    class Tokenizer(tokens.Tokenizer):
 66        IDENTIFIERS = ['"', ("[", "]"), "`"]
 67        HEX_STRINGS = [("x'", "'"), ("X'", "'"), ("0x", ""), ("0X", "")]
 68
 69    class Parser(parser.Parser):
 70        FUNCTIONS = {
 71            **parser.Parser.FUNCTIONS,
 72            "EDITDIST3": exp.Levenshtein.from_arg_list,
 73        }
 74
 75    class Generator(generator.Generator):
 76        JOIN_HINTS = False
 77        TABLE_HINTS = False
 78
 79        TYPE_MAPPING = {
 80            **generator.Generator.TYPE_MAPPING,
 81            exp.DataType.Type.BOOLEAN: "INTEGER",
 82            exp.DataType.Type.TINYINT: "INTEGER",
 83            exp.DataType.Type.SMALLINT: "INTEGER",
 84            exp.DataType.Type.INT: "INTEGER",
 85            exp.DataType.Type.BIGINT: "INTEGER",
 86            exp.DataType.Type.FLOAT: "REAL",
 87            exp.DataType.Type.DOUBLE: "REAL",
 88            exp.DataType.Type.DECIMAL: "REAL",
 89            exp.DataType.Type.CHAR: "TEXT",
 90            exp.DataType.Type.NCHAR: "TEXT",
 91            exp.DataType.Type.VARCHAR: "TEXT",
 92            exp.DataType.Type.NVARCHAR: "TEXT",
 93            exp.DataType.Type.BINARY: "BLOB",
 94            exp.DataType.Type.VARBINARY: "BLOB",
 95        }
 96
 97        TOKEN_MAPPING = {
 98            TokenType.AUTO_INCREMENT: "AUTOINCREMENT",
 99        }
100
101        TRANSFORMS = {
102            **generator.Generator.TRANSFORMS,
103            exp.Concat: concat_to_dpipe_sql,
104            exp.CountIf: count_if_to_sum,
105            exp.Create: transforms.preprocess([_transform_create]),
106            exp.CurrentDate: lambda *_: "CURRENT_DATE",
107            exp.CurrentTime: lambda *_: "CURRENT_TIME",
108            exp.CurrentTimestamp: lambda *_: "CURRENT_TIMESTAMP",
109            exp.DateAdd: _date_add_sql,
110            exp.DateStrToDate: lambda self, e: self.sql(e, "this"),
111            exp.ILike: no_ilike_sql,
112            exp.JSONExtract: arrow_json_extract_sql,
113            exp.JSONExtractScalar: arrow_json_extract_scalar_sql,
114            exp.JSONBExtract: arrow_json_extract_sql,
115            exp.JSONBExtractScalar: arrow_json_extract_scalar_sql,
116            exp.Levenshtein: rename_func("EDITDIST3"),
117            exp.LogicalOr: rename_func("MAX"),
118            exp.LogicalAnd: rename_func("MIN"),
119            exp.Pivot: no_pivot_sql,
120            exp.SafeConcat: concat_to_dpipe_sql,
121            exp.Select: transforms.preprocess(
122                [transforms.eliminate_distinct_on, transforms.eliminate_qualify]
123            ),
124            exp.TableSample: no_tablesample_sql,
125            exp.TimeStrToTime: lambda self, e: self.sql(e, "this"),
126            exp.TryCast: no_trycast_sql,
127        }
128
129        PROPERTIES_LOCATION = {
130            k: exp.Properties.Location.UNSUPPORTED
131            for k, v in generator.Generator.PROPERTIES_LOCATION.items()
132        }
133
134        LIMIT_FETCH = "LIMIT"
135
136        def cast_sql(self, expression: exp.Cast) -> str:
137            if expression.is_type("date"):
138                return self.func("DATE", expression.this)
139
140            return super().cast_sql(expression)
141
142        def datediff_sql(self, expression: exp.DateDiff) -> str:
143            unit = expression.args.get("unit")
144            unit = unit.name.upper() if unit else "DAY"
145
146            sql = f"(JULIANDAY({self.sql(expression, 'this')}) - JULIANDAY({self.sql(expression, 'expression')}))"
147
148            if unit == "MONTH":
149                sql = f"{sql} / 30.0"
150            elif unit == "YEAR":
151                sql = f"{sql} / 365.0"
152            elif unit == "HOUR":
153                sql = f"{sql} * 24.0"
154            elif unit == "MINUTE":
155                sql = f"{sql} * 1440.0"
156            elif unit == "SECOND":
157                sql = f"{sql} * 86400.0"
158            elif unit == "MILLISECOND":
159                sql = f"{sql} * 86400000.0"
160            elif unit == "MICROSECOND":
161                sql = f"{sql} * 86400000000.0"
162            elif unit == "NANOSECOND":
163                sql = f"{sql} * 8640000000000.0"
164            else:
165                self.unsupported("DATEDIFF unsupported for '{unit}'.")
166
167            return f"CAST({sql} AS INTEGER)"
168
169        # https://www.sqlite.org/lang_aggfunc.html#group_concat
170        def groupconcat_sql(self, expression: exp.GroupConcat) -> str:
171            this = expression.this
172            distinct = expression.find(exp.Distinct)
173
174            if distinct:
175                this = distinct.expressions[0]
176                distinct_sql = "DISTINCT "
177            else:
178                distinct_sql = ""
179
180            if isinstance(expression.this, exp.Order):
181                self.unsupported("SQLite GROUP_CONCAT doesn't support ORDER BY.")
182                if expression.this.this and not distinct:
183                    this = expression.this.this
184
185            separator = expression.args.get("separator")
186            return f"GROUP_CONCAT({distinct_sql}{self.format_args(this, separator)})"
187
188        def least_sql(self, expression: exp.Least) -> str:
189            if len(expression.expressions) > 1:
190                return rename_func("MIN")(self, expression)
191
192            return self.expressions(expression)
193
194        def transaction_sql(self, expression: exp.Transaction) -> str:
195            this = expression.this
196            this = f" {this}" if this else ""
197            return f"BEGIN{this} TRANSACTION"

class SQLite(sqlglot.dialects.dialect.Dialect): View Source

 62class SQLite(Dialect):
 63    # https://sqlite.org/forum/forumpost/5e575586ac5c711b?raw
 64    RESOLVES_IDENTIFIERS_AS_UPPERCASE = None
 65
 66    class Tokenizer(tokens.Tokenizer):
 67        IDENTIFIERS = ['"', ("[", "]"), "`"]
 68        HEX_STRINGS = [("x'", "'"), ("X'", "'"), ("0x", ""), ("0X", "")]
 69
 70    class Parser(parser.Parser):
 71        FUNCTIONS = {
 72            **parser.Parser.FUNCTIONS,
 73            "EDITDIST3": exp.Levenshtein.from_arg_list,
 74        }
 75
 76    class Generator(generator.Generator):
 77        JOIN_HINTS = False
 78        TABLE_HINTS = False
 79
 80        TYPE_MAPPING = {
 81            **generator.Generator.TYPE_MAPPING,
 82            exp.DataType.Type.BOOLEAN: "INTEGER",
 83            exp.DataType.Type.TINYINT: "INTEGER",
 84            exp.DataType.Type.SMALLINT: "INTEGER",
 85            exp.DataType.Type.INT: "INTEGER",
 86            exp.DataType.Type.BIGINT: "INTEGER",
 87            exp.DataType.Type.FLOAT: "REAL",
 88            exp.DataType.Type.DOUBLE: "REAL",
 89            exp.DataType.Type.DECIMAL: "REAL",
 90            exp.DataType.Type.CHAR: "TEXT",
 91            exp.DataType.Type.NCHAR: "TEXT",
 92            exp.DataType.Type.VARCHAR: "TEXT",
 93            exp.DataType.Type.NVARCHAR: "TEXT",
 94            exp.DataType.Type.BINARY: "BLOB",
 95            exp.DataType.Type.VARBINARY: "BLOB",
 96        }
 97
 98        TOKEN_MAPPING = {
 99            TokenType.AUTO_INCREMENT: "AUTOINCREMENT",
100        }
101
102        TRANSFORMS = {
103            **generator.Generator.TRANSFORMS,
104            exp.Concat: concat_to_dpipe_sql,
105            exp.CountIf: count_if_to_sum,
106            exp.Create: transforms.preprocess([_transform_create]),
107            exp.CurrentDate: lambda *_: "CURRENT_DATE",
108            exp.CurrentTime: lambda *_: "CURRENT_TIME",
109            exp.CurrentTimestamp: lambda *_: "CURRENT_TIMESTAMP",
110            exp.DateAdd: _date_add_sql,
111            exp.DateStrToDate: lambda self, e: self.sql(e, "this"),
112            exp.ILike: no_ilike_sql,
113            exp.JSONExtract: arrow_json_extract_sql,
114            exp.JSONExtractScalar: arrow_json_extract_scalar_sql,
115            exp.JSONBExtract: arrow_json_extract_sql,
116            exp.JSONBExtractScalar: arrow_json_extract_scalar_sql,
117            exp.Levenshtein: rename_func("EDITDIST3"),
118            exp.LogicalOr: rename_func("MAX"),
119            exp.LogicalAnd: rename_func("MIN"),
120            exp.Pivot: no_pivot_sql,
121            exp.SafeConcat: concat_to_dpipe_sql,
122            exp.Select: transforms.preprocess(
123                [transforms.eliminate_distinct_on, transforms.eliminate_qualify]
124            ),
125            exp.TableSample: no_tablesample_sql,
126            exp.TimeStrToTime: lambda self, e: self.sql(e, "this"),
127            exp.TryCast: no_trycast_sql,
128        }
129
130        PROPERTIES_LOCATION = {
131            k: exp.Properties.Location.UNSUPPORTED
132            for k, v in generator.Generator.PROPERTIES_LOCATION.items()
133        }
134
135        LIMIT_FETCH = "LIMIT"
136
137        def cast_sql(self, expression: exp.Cast) -> str:
138            if expression.is_type("date"):
139                return self.func("DATE", expression.this)
140
141            return super().cast_sql(expression)
142
143        def datediff_sql(self, expression: exp.DateDiff) -> str:
144            unit = expression.args.get("unit")
145            unit = unit.name.upper() if unit else "DAY"
146
147            sql = f"(JULIANDAY({self.sql(expression, 'this')}) - JULIANDAY({self.sql(expression, 'expression')}))"
148
149            if unit == "MONTH":
150                sql = f"{sql} / 30.0"
151            elif unit == "YEAR":
152                sql = f"{sql} / 365.0"
153            elif unit == "HOUR":
154                sql = f"{sql} * 24.0"
155            elif unit == "MINUTE":
156                sql = f"{sql} * 1440.0"
157            elif unit == "SECOND":
158                sql = f"{sql} * 86400.0"
159            elif unit == "MILLISECOND":
160                sql = f"{sql} * 86400000.0"
161            elif unit == "MICROSECOND":
162                sql = f"{sql} * 86400000000.0"
163            elif unit == "NANOSECOND":
164                sql = f"{sql} * 8640000000000.0"
165            else:
166                self.unsupported("DATEDIFF unsupported for '{unit}'.")
167
168            return f"CAST({sql} AS INTEGER)"
169
170        # https://www.sqlite.org/lang_aggfunc.html#group_concat
171        def groupconcat_sql(self, expression: exp.GroupConcat) -> str:
172            this = expression.this
173            distinct = expression.find(exp.Distinct)
174
175            if distinct:
176                this = distinct.expressions[0]
177                distinct_sql = "DISTINCT "
178            else:
179                distinct_sql = ""
180
181            if isinstance(expression.this, exp.Order):
182                self.unsupported("SQLite GROUP_CONCAT doesn't support ORDER BY.")
183                if expression.this.this and not distinct:
184                    this = expression.this.this
185
186            separator = expression.args.get("separator")
187            return f"GROUP_CONCAT({distinct_sql}{self.format_args(this, separator)})"
188
189        def least_sql(self, expression: exp.Least) -> str:
190            if len(expression.expressions) > 1:
191                return rename_func("MIN")(self, expression)
192
193            return self.expressions(expression)
194
195        def transaction_sql(self, expression: exp.Transaction) -> str:
196            this = expression.this
197            this = f" {this}" if this else ""
198            return f"BEGIN{this} TRANSACTION"

Inherited Members

sqlglot.dialects.dialect.Dialect: get_or_raise; format_time; normalize_identifier; case_sensitive; can_identify; quote_identifier; parse; parse_into; generate; transpile; tokenize; parser; generator

class SQLite.Tokenizer(sqlglot.tokens.Tokenizer): View Source

66    class Tokenizer(tokens.Tokenizer):
67        IDENTIFIERS = ['"', ("[", "]"), "`"]
68        HEX_STRINGS = [("x'", "'"), ("X'", "'"), ("0x", ""), ("0X", "")]

Inherited Members

sqlglot.tokens.Tokenizer: reset; tokenize; peek

class SQLite.Parser(sqlglot.parser.Parser): View Source

70    class Parser(parser.Parser):
71        FUNCTIONS = {
72            **parser.Parser.FUNCTIONS,
73            "EDITDIST3": exp.Levenshtein.from_arg_list,
74        }

Parser consumes a list of tokens produced by the Tokenizer and produces a parsed syntax tree.

Arguments:

error_level: The desired error level. Default: ErrorLevel.IMMEDIATE
error_message_context: Determines the amount of context to capture from a query string when displaying the error message (in number of characters). Default: 100
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

Inherited Members

sqlglot.parser.Parser: Parser; reset; parse; parse_into; check_errors; raise_error; expression; validate_expression

class SQLite.Generator(sqlglot.generator.Generator): View Source

 76    class Generator(generator.Generator):
 77        JOIN_HINTS = False
 78        TABLE_HINTS = False
 79
 80        TYPE_MAPPING = {
 81            **generator.Generator.TYPE_MAPPING,
 82            exp.DataType.Type.BOOLEAN: "INTEGER",
 83            exp.DataType.Type.TINYINT: "INTEGER",
 84            exp.DataType.Type.SMALLINT: "INTEGER",
 85            exp.DataType.Type.INT: "INTEGER",
 86            exp.DataType.Type.BIGINT: "INTEGER",
 87            exp.DataType.Type.FLOAT: "REAL",
 88            exp.DataType.Type.DOUBLE: "REAL",
 89            exp.DataType.Type.DECIMAL: "REAL",
 90            exp.DataType.Type.CHAR: "TEXT",
 91            exp.DataType.Type.NCHAR: "TEXT",
 92            exp.DataType.Type.VARCHAR: "TEXT",
 93            exp.DataType.Type.NVARCHAR: "TEXT",
 94            exp.DataType.Type.BINARY: "BLOB",
 95            exp.DataType.Type.VARBINARY: "BLOB",
 96        }
 97
 98        TOKEN_MAPPING = {
 99            TokenType.AUTO_INCREMENT: "AUTOINCREMENT",
100        }
101
102        TRANSFORMS = {
103            **generator.Generator.TRANSFORMS,
104            exp.Concat: concat_to_dpipe_sql,
105            exp.CountIf: count_if_to_sum,
106            exp.Create: transforms.preprocess([_transform_create]),
107            exp.CurrentDate: lambda *_: "CURRENT_DATE",
108            exp.CurrentTime: lambda *_: "CURRENT_TIME",
109            exp.CurrentTimestamp: lambda *_: "CURRENT_TIMESTAMP",
110            exp.DateAdd: _date_add_sql,
111            exp.DateStrToDate: lambda self, e: self.sql(e, "this"),
112            exp.ILike: no_ilike_sql,
113            exp.JSONExtract: arrow_json_extract_sql,
114            exp.JSONExtractScalar: arrow_json_extract_scalar_sql,
115            exp.JSONBExtract: arrow_json_extract_sql,
116            exp.JSONBExtractScalar: arrow_json_extract_scalar_sql,
117            exp.Levenshtein: rename_func("EDITDIST3"),
118            exp.LogicalOr: rename_func("MAX"),
119            exp.LogicalAnd: rename_func("MIN"),
120            exp.Pivot: no_pivot_sql,
121            exp.SafeConcat: concat_to_dpipe_sql,
122            exp.Select: transforms.preprocess(
123                [transforms.eliminate_distinct_on, transforms.eliminate_qualify]
124            ),
125            exp.TableSample: no_tablesample_sql,
126            exp.TimeStrToTime: lambda self, e: self.sql(e, "this"),
127            exp.TryCast: no_trycast_sql,
128        }
129
130        PROPERTIES_LOCATION = {
131            k: exp.Properties.Location.UNSUPPORTED
132            for k, v in generator.Generator.PROPERTIES_LOCATION.items()
133        }
134
135        LIMIT_FETCH = "LIMIT"
136
137        def cast_sql(self, expression: exp.Cast) -> str:
138            if expression.is_type("date"):
139                return self.func("DATE", expression.this)
140
141            return super().cast_sql(expression)
142
143        def datediff_sql(self, expression: exp.DateDiff) -> str:
144            unit = expression.args.get("unit")
145            unit = unit.name.upper() if unit else "DAY"
146
147            sql = f"(JULIANDAY({self.sql(expression, 'this')}) - JULIANDAY({self.sql(expression, 'expression')}))"
148
149            if unit == "MONTH":
150                sql = f"{sql} / 30.0"
151            elif unit == "YEAR":
152                sql = f"{sql} / 365.0"
153            elif unit == "HOUR":
154                sql = f"{sql} * 24.0"
155            elif unit == "MINUTE":
156                sql = f"{sql} * 1440.0"
157            elif unit == "SECOND":
158                sql = f"{sql} * 86400.0"
159            elif unit == "MILLISECOND":
160                sql = f"{sql} * 86400000.0"
161            elif unit == "MICROSECOND":
162                sql = f"{sql} * 86400000000.0"
163            elif unit == "NANOSECOND":
164                sql = f"{sql} * 8640000000000.0"
165            else:
166                self.unsupported("DATEDIFF unsupported for '{unit}'.")
167
168            return f"CAST({sql} AS INTEGER)"
169
170        # https://www.sqlite.org/lang_aggfunc.html#group_concat
171        def groupconcat_sql(self, expression: exp.GroupConcat) -> str:
172            this = expression.this
173            distinct = expression.find(exp.Distinct)
174
175            if distinct:
176                this = distinct.expressions[0]
177                distinct_sql = "DISTINCT "
178            else:
179                distinct_sql = ""
180
181            if isinstance(expression.this, exp.Order):
182                self.unsupported("SQLite GROUP_CONCAT doesn't support ORDER BY.")
183                if expression.this.this and not distinct:
184                    this = expression.this.this
185
186            separator = expression.args.get("separator")
187            return f"GROUP_CONCAT({distinct_sql}{self.format_args(this, separator)})"
188
189        def least_sql(self, expression: exp.Least) -> str:
190            if len(expression.expressions) > 1:
191                return rename_func("MIN")(self, expression)
192
193            return self.expressions(expression)
194
195        def transaction_sql(self, expression: exp.Transaction) -> str:
196            this = expression.this
197            this = f" {this}" if this else ""
198            return f"BEGIN{this} TRANSACTION"

Generator converts a given syntax tree to the corresponding SQL string.

Arguments:

pretty: Whether or not to format the produced SQL string. Default: False.
identify: Determines when an identifier should be quoted. Possible values are: False (default): Never quote, except in cases where it's mandatory by the dialect. True or 'always': Always quote. 'safe': Only quote identifiers that are case insensitive.
normalize: Whether or not to normalize identifiers to lowercase. Default: False.
pad: Determines the pad size in a formatted string. Default: 2.
indent: Determines the indentation size in a formatted string. Default: 2.
normalize_functions: Whether or not to normalize all function names. Possible values are: "upper" or True (default): Convert names to uppercase. "lower": Convert names to lowercase. False: Disables function name normalization.
unsupported_level: Determines the generator's behavior when it encounters unsupported expressions. Default ErrorLevel.WARN.
max_unsupported: 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: Determines whether or not the comma is leading or trailing in select expressions. This is only relevant when generating in pretty mode. 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

def cast_sql(self, expression: sqlglot.expressions.Cast) -> str: View Source

137        def cast_sql(self, expression: exp.Cast) -> str:
138            if expression.is_type("date"):
139                return self.func("DATE", expression.this)
140
141            return super().cast_sql(expression)

def datediff_sql(self, expression: sqlglot.expressions.DateDiff) -> str: View Source

143        def datediff_sql(self, expression: exp.DateDiff) -> str:
144            unit = expression.args.get("unit")
145            unit = unit.name.upper() if unit else "DAY"
146
147            sql = f"(JULIANDAY({self.sql(expression, 'this')}) - JULIANDAY({self.sql(expression, 'expression')}))"
148
149            if unit == "MONTH":
150                sql = f"{sql} / 30.0"
151            elif unit == "YEAR":
152                sql = f"{sql} / 365.0"
153            elif unit == "HOUR":
154                sql = f"{sql} * 24.0"
155            elif unit == "MINUTE":
156                sql = f"{sql} * 1440.0"
157            elif unit == "SECOND":
158                sql = f"{sql} * 86400.0"
159            elif unit == "MILLISECOND":
160                sql = f"{sql} * 86400000.0"
161            elif unit == "MICROSECOND":
162                sql = f"{sql} * 86400000000.0"
163            elif unit == "NANOSECOND":
164                sql = f"{sql} * 8640000000000.0"
165            else:
166                self.unsupported("DATEDIFF unsupported for '{unit}'.")
167
168            return f"CAST({sql} AS INTEGER)"

def groupconcat_sql(self, expression: sqlglot.expressions.GroupConcat) -> str: View Source

171        def groupconcat_sql(self, expression: exp.GroupConcat) -> str:
172            this = expression.this
173            distinct = expression.find(exp.Distinct)
174
175            if distinct:
176                this = distinct.expressions[0]
177                distinct_sql = "DISTINCT "
178            else:
179                distinct_sql = ""
180
181            if isinstance(expression.this, exp.Order):
182                self.unsupported("SQLite GROUP_CONCAT doesn't support ORDER BY.")
183                if expression.this.this and not distinct:
184                    this = expression.this.this
185
186            separator = expression.args.get("separator")
187            return f"GROUP_CONCAT({distinct_sql}{self.format_args(this, separator)})"

def least_sql(self, expression: sqlglot.expressions.Least) -> str: View Source

189        def least_sql(self, expression: exp.Least) -> str:
190            if len(expression.expressions) > 1:
191                return rename_func("MIN")(self, expression)
192
193            return self.expressions(expression)

def transaction_sql(self, expression: sqlglot.expressions.Transaction) -> str: View Source

195        def transaction_sql(self, expression: exp.Transaction) -> str:
196            this = expression.this
197            this = f" {this}" if this else ""
198            return f"BEGIN{this} TRANSACTION"

@classmethod

def can_identify(text: str, identify: str | bool = 'safe') -> bool: View Source

247    @classmethod
248    def can_identify(cls, text: str, identify: str | bool = "safe") -> bool:
249        """Checks if text can be identified given an identify option.
250
251        Args:
252            text: The text to check.
253            identify:
254                "always" or `True`: Always returns true.
255                "safe": True if the identifier is case-insensitive.
256
257        Returns:
258            Whether or not the given text can be identified.
259        """
260        if identify is True or identify == "always":
261            return True
262
263        if identify == "safe":
264            return not cls.case_sensitive(text)
265
266        return False

Checks if text can be identified given an identify option.

Arguments:

text: The text to check.
identify: "always" or True: Always returns true. "safe": True if the identifier is case-insensitive.

Returns:

Whether or not the given text can be identified.

Inherited Members

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