sqlglot.dialects.snowflake
1from __future__ import annotations 2 3import typing as t 4 5from sqlglot import exp, generator, parser, tokens, transforms 6from sqlglot._typing import E 7from sqlglot.dialects.dialect import ( 8 Dialect, 9 binary_from_function, 10 date_trunc_to_time, 11 datestrtodate_sql, 12 format_time_lambda, 13 if_sql, 14 inline_array_sql, 15 max_or_greatest, 16 min_or_least, 17 rename_func, 18 timestamptrunc_sql, 19 timestrtotime_sql, 20 ts_or_ds_to_date_sql, 21 var_map_sql, 22) 23from sqlglot.expressions import Literal 24from sqlglot.helper import seq_get 25from sqlglot.parser import binary_range_parser 26from sqlglot.tokens import TokenType 27 28 29def _check_int(s: str) -> bool: 30 if s[0] in ("-", "+"): 31 return s[1:].isdigit() 32 return s.isdigit() 33 34 35# from https://docs.snowflake.com/en/sql-reference/functions/to_timestamp.html 36def _parse_to_timestamp(args: t.List) -> t.Union[exp.StrToTime, exp.UnixToTime, exp.TimeStrToTime]: 37 if len(args) == 2: 38 first_arg, second_arg = args 39 if second_arg.is_string: 40 # case: <string_expr> [ , <format> ] 41 return format_time_lambda(exp.StrToTime, "snowflake")(args) 42 43 # case: <numeric_expr> [ , <scale> ] 44 if second_arg.name not in ["0", "3", "9"]: 45 raise ValueError( 46 f"Scale for snowflake numeric timestamp is {second_arg}, but should be 0, 3, or 9" 47 ) 48 49 if second_arg.name == "0": 50 timescale = exp.UnixToTime.SECONDS 51 elif second_arg.name == "3": 52 timescale = exp.UnixToTime.MILLIS 53 elif second_arg.name == "9": 54 timescale = exp.UnixToTime.MICROS 55 56 return exp.UnixToTime(this=first_arg, scale=timescale) 57 58 from sqlglot.optimizer.simplify import simplify_literals 59 60 # The first argument might be an expression like 40 * 365 * 86400, so we try to 61 # reduce it using `simplify_literals` first and then check if it's a Literal. 62 first_arg = seq_get(args, 0) 63 if not isinstance(simplify_literals(first_arg, root=True), Literal): 64 # case: <variant_expr> or other expressions such as columns 65 return exp.TimeStrToTime.from_arg_list(args) 66 67 if first_arg.is_string: 68 if _check_int(first_arg.this): 69 # case: <integer> 70 return exp.UnixToTime.from_arg_list(args) 71 72 # case: <date_expr> 73 return format_time_lambda(exp.StrToTime, "snowflake", default=True)(args) 74 75 # case: <numeric_expr> 76 return exp.UnixToTime.from_arg_list(args) 77 78 79def _parse_object_construct(args: t.List) -> t.Union[exp.StarMap, exp.Struct]: 80 expression = parser.parse_var_map(args) 81 82 if isinstance(expression, exp.StarMap): 83 return expression 84 85 return exp.Struct( 86 expressions=[ 87 t.cast(exp.Condition, k).eq(v) for k, v in zip(expression.keys, expression.values) 88 ] 89 ) 90 91 92def _parse_datediff(args: t.List) -> exp.DateDiff: 93 return exp.DateDiff(this=seq_get(args, 2), expression=seq_get(args, 1), unit=seq_get(args, 0)) 94 95 96def _unix_to_time_sql(self: Snowflake.Generator, expression: exp.UnixToTime) -> str: 97 scale = expression.args.get("scale") 98 timestamp = self.sql(expression, "this") 99 if scale in [None, exp.UnixToTime.SECONDS]: 100 return f"TO_TIMESTAMP({timestamp})" 101 if scale == exp.UnixToTime.MILLIS: 102 return f"TO_TIMESTAMP({timestamp}, 3)" 103 if scale == exp.UnixToTime.MICROS: 104 return f"TO_TIMESTAMP({timestamp}, 9)" 105 106 raise ValueError("Improper scale for timestamp") 107 108 109# https://docs.snowflake.com/en/sql-reference/functions/date_part.html 110# https://docs.snowflake.com/en/sql-reference/functions-date-time.html#label-supported-date-time-parts 111def _parse_date_part(self: Snowflake.Parser) -> t.Optional[exp.Expression]: 112 this = self._parse_var() or self._parse_type() 113 114 if not this: 115 return None 116 117 self._match(TokenType.COMMA) 118 expression = self._parse_bitwise() 119 120 name = this.name.upper() 121 if name.startswith("EPOCH"): 122 if name.startswith("EPOCH_MILLISECOND"): 123 scale = 10**3 124 elif name.startswith("EPOCH_MICROSECOND"): 125 scale = 10**6 126 elif name.startswith("EPOCH_NANOSECOND"): 127 scale = 10**9 128 else: 129 scale = None 130 131 ts = self.expression(exp.Cast, this=expression, to=exp.DataType.build("TIMESTAMP")) 132 to_unix: exp.Expression = self.expression(exp.TimeToUnix, this=ts) 133 134 if scale: 135 to_unix = exp.Mul(this=to_unix, expression=exp.Literal.number(scale)) 136 137 return to_unix 138 139 return self.expression(exp.Extract, this=this, expression=expression) 140 141 142# https://docs.snowflake.com/en/sql-reference/functions/div0 143def _div0_to_if(args: t.List) -> exp.If: 144 cond = exp.EQ(this=seq_get(args, 1), expression=exp.Literal.number(0)) 145 true = exp.Literal.number(0) 146 false = exp.Div(this=seq_get(args, 0), expression=seq_get(args, 1)) 147 return exp.If(this=cond, true=true, false=false) 148 149 150# https://docs.snowflake.com/en/sql-reference/functions/zeroifnull 151def _zeroifnull_to_if(args: t.List) -> exp.If: 152 cond = exp.Is(this=seq_get(args, 0), expression=exp.Null()) 153 return exp.If(this=cond, true=exp.Literal.number(0), false=seq_get(args, 0)) 154 155 156# https://docs.snowflake.com/en/sql-reference/functions/zeroifnull 157def _nullifzero_to_if(args: t.List) -> exp.If: 158 cond = exp.EQ(this=seq_get(args, 0), expression=exp.Literal.number(0)) 159 return exp.If(this=cond, true=exp.Null(), false=seq_get(args, 0)) 160 161 162def _datatype_sql(self: Snowflake.Generator, expression: exp.DataType) -> str: 163 if expression.is_type("array"): 164 return "ARRAY" 165 elif expression.is_type("map"): 166 return "OBJECT" 167 return self.datatype_sql(expression) 168 169 170def _regexpilike_sql(self: Snowflake.Generator, expression: exp.RegexpILike) -> str: 171 flag = expression.text("flag") 172 173 if "i" not in flag: 174 flag += "i" 175 176 return self.func( 177 "REGEXP_LIKE", expression.this, expression.expression, exp.Literal.string(flag) 178 ) 179 180 181def _parse_convert_timezone(args: t.List) -> t.Union[exp.Anonymous, exp.AtTimeZone]: 182 if len(args) == 3: 183 return exp.Anonymous(this="CONVERT_TIMEZONE", expressions=args) 184 return exp.AtTimeZone(this=seq_get(args, 1), zone=seq_get(args, 0)) 185 186 187def _parse_regexp_replace(args: t.List) -> exp.RegexpReplace: 188 regexp_replace = exp.RegexpReplace.from_arg_list(args) 189 190 if not regexp_replace.args.get("replacement"): 191 regexp_replace.set("replacement", exp.Literal.string("")) 192 193 return regexp_replace 194 195 196def _show_parser(*args: t.Any, **kwargs: t.Any) -> t.Callable[[Snowflake.Parser], exp.Show]: 197 def _parse(self: Snowflake.Parser) -> exp.Show: 198 return self._parse_show_snowflake(*args, **kwargs) 199 200 return _parse 201 202 203class Snowflake(Dialect): 204 # https://docs.snowflake.com/en/sql-reference/identifiers-syntax 205 RESOLVES_IDENTIFIERS_AS_UPPERCASE = True 206 NULL_ORDERING = "nulls_are_large" 207 TIME_FORMAT = "'YYYY-MM-DD HH24:MI:SS'" 208 SUPPORTS_USER_DEFINED_TYPES = False 209 SUPPORTS_SEMI_ANTI_JOIN = False 210 211 TIME_MAPPING = { 212 "YYYY": "%Y", 213 "yyyy": "%Y", 214 "YY": "%y", 215 "yy": "%y", 216 "MMMM": "%B", 217 "mmmm": "%B", 218 "MON": "%b", 219 "mon": "%b", 220 "MM": "%m", 221 "mm": "%m", 222 "DD": "%d", 223 "dd": "%-d", 224 "DY": "%a", 225 "dy": "%w", 226 "HH24": "%H", 227 "hh24": "%H", 228 "HH12": "%I", 229 "hh12": "%I", 230 "MI": "%M", 231 "mi": "%M", 232 "SS": "%S", 233 "ss": "%S", 234 "FF": "%f", 235 "ff": "%f", 236 "FF6": "%f", 237 "ff6": "%f", 238 } 239 240 @classmethod 241 def quote_identifier(cls, expression: E, identify: bool = True) -> E: 242 # This disables quoting DUAL in SELECT ... FROM DUAL, because Snowflake treats an 243 # unquoted DUAL keyword in a special way and does not map it to a user-defined table 244 if ( 245 isinstance(expression, exp.Identifier) 246 and isinstance(expression.parent, exp.Table) 247 and expression.name.lower() == "dual" 248 ): 249 return t.cast(E, expression) 250 251 return super().quote_identifier(expression, identify=identify) 252 253 class Parser(parser.Parser): 254 IDENTIFY_PIVOT_STRINGS = True 255 256 TABLE_ALIAS_TOKENS = parser.Parser.TABLE_ALIAS_TOKENS | {TokenType.WINDOW} 257 258 FUNCTIONS = { 259 **parser.Parser.FUNCTIONS, 260 "ARRAYAGG": exp.ArrayAgg.from_arg_list, 261 "ARRAY_CONSTRUCT": exp.Array.from_arg_list, 262 "ARRAY_GENERATE_RANGE": lambda args: exp.GenerateSeries( 263 # ARRAY_GENERATE_RANGE has an exlusive end; we normalize it to be inclusive 264 start=seq_get(args, 0), 265 end=exp.Sub(this=seq_get(args, 1), expression=exp.Literal.number(1)), 266 step=seq_get(args, 2), 267 ), 268 "ARRAY_TO_STRING": exp.ArrayJoin.from_arg_list, 269 "BITXOR": binary_from_function(exp.BitwiseXor), 270 "BIT_XOR": binary_from_function(exp.BitwiseXor), 271 "BOOLXOR": binary_from_function(exp.Xor), 272 "CONVERT_TIMEZONE": _parse_convert_timezone, 273 "DATE_TRUNC": date_trunc_to_time, 274 "DATEADD": lambda args: exp.DateAdd( 275 this=seq_get(args, 2), expression=seq_get(args, 1), unit=seq_get(args, 0) 276 ), 277 "DATEDIFF": _parse_datediff, 278 "DIV0": _div0_to_if, 279 "FLATTEN": exp.Explode.from_arg_list, 280 "IFF": exp.If.from_arg_list, 281 "LISTAGG": exp.GroupConcat.from_arg_list, 282 "NULLIFZERO": _nullifzero_to_if, 283 "OBJECT_CONSTRUCT": _parse_object_construct, 284 "REGEXP_REPLACE": _parse_regexp_replace, 285 "REGEXP_SUBSTR": exp.RegexpExtract.from_arg_list, 286 "RLIKE": exp.RegexpLike.from_arg_list, 287 "SQUARE": lambda args: exp.Pow(this=seq_get(args, 0), expression=exp.Literal.number(2)), 288 "TIMEDIFF": _parse_datediff, 289 "TIMESTAMPDIFF": _parse_datediff, 290 "TO_ARRAY": exp.Array.from_arg_list, 291 "TO_TIMESTAMP": _parse_to_timestamp, 292 "TO_VARCHAR": exp.ToChar.from_arg_list, 293 "ZEROIFNULL": _zeroifnull_to_if, 294 } 295 296 FUNCTION_PARSERS = { 297 **parser.Parser.FUNCTION_PARSERS, 298 "DATE_PART": _parse_date_part, 299 } 300 FUNCTION_PARSERS.pop("TRIM") 301 302 COLUMN_OPERATORS = { 303 **parser.Parser.COLUMN_OPERATORS, 304 TokenType.COLON: lambda self, this, path: self.expression( 305 exp.Bracket, this=this, expressions=[path] 306 ), 307 } 308 309 TIMESTAMPS = parser.Parser.TIMESTAMPS - {TokenType.TIME} 310 311 RANGE_PARSERS = { 312 **parser.Parser.RANGE_PARSERS, 313 TokenType.LIKE_ANY: binary_range_parser(exp.LikeAny), 314 TokenType.ILIKE_ANY: binary_range_parser(exp.ILikeAny), 315 } 316 317 ALTER_PARSERS = { 318 **parser.Parser.ALTER_PARSERS, 319 "SET": lambda self: self._parse_set(tag=self._match_text_seq("TAG")), 320 "UNSET": lambda self: self.expression( 321 exp.Set, 322 tag=self._match_text_seq("TAG"), 323 expressions=self._parse_csv(self._parse_id_var), 324 unset=True, 325 ), 326 "SWAP": lambda self: self._parse_alter_table_swap(), 327 } 328 329 STATEMENT_PARSERS = { 330 **parser.Parser.STATEMENT_PARSERS, 331 TokenType.SHOW: lambda self: self._parse_show(), 332 } 333 334 SHOW_PARSERS = { 335 "PRIMARY KEYS": _show_parser("PRIMARY KEYS"), 336 "TERSE PRIMARY KEYS": _show_parser("PRIMARY KEYS"), 337 } 338 339 STAGED_FILE_SINGLE_TOKENS = { 340 TokenType.DOT, 341 TokenType.MOD, 342 TokenType.SLASH, 343 } 344 FLATTEN_COLUMNS = ["SEQ", "KEY", "PATH", "INDEX", "VALUE", "THIS"] 345 346 def _parse_lateral(self) -> t.Optional[exp.Lateral]: 347 lateral = super()._parse_lateral() 348 if not lateral: 349 return lateral 350 351 if isinstance(lateral.this, exp.Explode): 352 table_alias = lateral.args.get("alias") 353 columns = [exp.to_identifier(col) for col in self.FLATTEN_COLUMNS] 354 if table_alias and not table_alias.args.get("columns"): 355 table_alias.set("columns", columns) 356 elif not table_alias: 357 exp.alias_(lateral, "_flattened", table=columns, copy=False) 358 359 return lateral 360 361 def _parse_table_parts(self, schema: bool = False) -> exp.Table: 362 # https://docs.snowflake.com/en/user-guide/querying-stage 363 table: t.Optional[exp.Expression] = None 364 if self._match_text_seq("@"): 365 table_name = "@" 366 while self._curr: 367 self._advance() 368 table_name += self._prev.text 369 if not self._match_set(self.STAGED_FILE_SINGLE_TOKENS, advance=False): 370 break 371 while self._match_set(self.STAGED_FILE_SINGLE_TOKENS): 372 table_name += self._prev.text 373 374 table = exp.var(table_name) 375 elif self._match(TokenType.STRING, advance=False): 376 table = self._parse_string() 377 378 if table: 379 file_format = None 380 pattern = None 381 382 if self._match_text_seq("(", "FILE_FORMAT", "=>"): 383 file_format = self._parse_string() or super()._parse_table_parts() 384 if self._match_text_seq(",", "PATTERN", "=>"): 385 pattern = self._parse_string() 386 self._match_r_paren() 387 388 return self.expression(exp.Table, this=table, format=file_format, pattern=pattern) 389 390 return super()._parse_table_parts(schema=schema) 391 392 def _parse_id_var( 393 self, 394 any_token: bool = True, 395 tokens: t.Optional[t.Collection[TokenType]] = None, 396 ) -> t.Optional[exp.Expression]: 397 if self._match_text_seq("IDENTIFIER", "("): 398 identifier = ( 399 super()._parse_id_var(any_token=any_token, tokens=tokens) 400 or self._parse_string() 401 ) 402 self._match_r_paren() 403 return self.expression(exp.Anonymous, this="IDENTIFIER", expressions=[identifier]) 404 405 return super()._parse_id_var(any_token=any_token, tokens=tokens) 406 407 def _parse_show_snowflake(self, this: str) -> exp.Show: 408 scope = None 409 scope_kind = None 410 411 if self._match(TokenType.IN): 412 if self._match_text_seq("ACCOUNT"): 413 scope_kind = "ACCOUNT" 414 elif self._match_set(self.DB_CREATABLES): 415 scope_kind = self._prev.text 416 if self._curr: 417 scope = self._parse_table() 418 elif self._curr: 419 scope_kind = "TABLE" 420 scope = self._parse_table() 421 422 return self.expression(exp.Show, this=this, scope=scope, scope_kind=scope_kind) 423 424 def _parse_alter_table_swap(self) -> exp.SwapTable: 425 self._match_text_seq("WITH") 426 return self.expression(exp.SwapTable, this=self._parse_table(schema=True)) 427 428 class Tokenizer(tokens.Tokenizer): 429 STRING_ESCAPES = ["\\", "'"] 430 HEX_STRINGS = [("x'", "'"), ("X'", "'")] 431 RAW_STRINGS = ["$$"] 432 COMMENTS = ["--", "//", ("/*", "*/")] 433 434 KEYWORDS = { 435 **tokens.Tokenizer.KEYWORDS, 436 "BYTEINT": TokenType.INT, 437 "CHAR VARYING": TokenType.VARCHAR, 438 "CHARACTER VARYING": TokenType.VARCHAR, 439 "EXCLUDE": TokenType.EXCEPT, 440 "ILIKE ANY": TokenType.ILIKE_ANY, 441 "LIKE ANY": TokenType.LIKE_ANY, 442 "MATCH_RECOGNIZE": TokenType.MATCH_RECOGNIZE, 443 "MINUS": TokenType.EXCEPT, 444 "NCHAR VARYING": TokenType.VARCHAR, 445 "PUT": TokenType.COMMAND, 446 "RENAME": TokenType.REPLACE, 447 "SAMPLE": TokenType.TABLE_SAMPLE, 448 "TIMESTAMP_LTZ": TokenType.TIMESTAMPLTZ, 449 "TIMESTAMP_NTZ": TokenType.TIMESTAMP, 450 "TIMESTAMP_TZ": TokenType.TIMESTAMPTZ, 451 "TIMESTAMPNTZ": TokenType.TIMESTAMP, 452 "TOP": TokenType.TOP, 453 } 454 455 SINGLE_TOKENS = { 456 **tokens.Tokenizer.SINGLE_TOKENS, 457 "$": TokenType.PARAMETER, 458 } 459 460 VAR_SINGLE_TOKENS = {"$"} 461 462 COMMANDS = tokens.Tokenizer.COMMANDS - {TokenType.SHOW} 463 464 class Generator(generator.Generator): 465 PARAMETER_TOKEN = "$" 466 MATCHED_BY_SOURCE = False 467 SINGLE_STRING_INTERVAL = True 468 JOIN_HINTS = False 469 TABLE_HINTS = False 470 QUERY_HINTS = False 471 AGGREGATE_FILTER_SUPPORTED = False 472 SUPPORTS_TABLE_COPY = False 473 COLLATE_IS_FUNC = True 474 475 TRANSFORMS = { 476 **generator.Generator.TRANSFORMS, 477 exp.ArgMax: rename_func("MAX_BY"), 478 exp.ArgMin: rename_func("MIN_BY"), 479 exp.Array: inline_array_sql, 480 exp.ArrayConcat: rename_func("ARRAY_CAT"), 481 exp.ArrayJoin: rename_func("ARRAY_TO_STRING"), 482 exp.AtTimeZone: lambda self, e: self.func( 483 "CONVERT_TIMEZONE", e.args.get("zone"), e.this 484 ), 485 exp.BitwiseXor: rename_func("BITXOR"), 486 exp.DateAdd: lambda self, e: self.func("DATEADD", e.text("unit"), e.expression, e.this), 487 exp.DateDiff: lambda self, e: self.func( 488 "DATEDIFF", e.text("unit"), e.expression, e.this 489 ), 490 exp.DateStrToDate: datestrtodate_sql, 491 exp.DataType: _datatype_sql, 492 exp.DayOfMonth: rename_func("DAYOFMONTH"), 493 exp.DayOfWeek: rename_func("DAYOFWEEK"), 494 exp.DayOfYear: rename_func("DAYOFYEAR"), 495 exp.Explode: rename_func("FLATTEN"), 496 exp.Extract: rename_func("DATE_PART"), 497 exp.GenerateSeries: lambda self, e: self.func( 498 "ARRAY_GENERATE_RANGE", e.args["start"], e.args["end"] + 1, e.args.get("step") 499 ), 500 exp.GroupConcat: rename_func("LISTAGG"), 501 exp.If: if_sql(name="IFF", false_value="NULL"), 502 exp.LogicalAnd: rename_func("BOOLAND_AGG"), 503 exp.LogicalOr: rename_func("BOOLOR_AGG"), 504 exp.Map: lambda self, e: var_map_sql(self, e, "OBJECT_CONSTRUCT"), 505 exp.Max: max_or_greatest, 506 exp.Min: min_or_least, 507 exp.PartitionedByProperty: lambda self, e: f"PARTITION BY {self.sql(e, 'this')}", 508 exp.PercentileCont: transforms.preprocess( 509 [transforms.add_within_group_for_percentiles] 510 ), 511 exp.PercentileDisc: transforms.preprocess( 512 [transforms.add_within_group_for_percentiles] 513 ), 514 exp.RegexpILike: _regexpilike_sql, 515 exp.Select: transforms.preprocess( 516 [ 517 transforms.eliminate_distinct_on, 518 transforms.explode_to_unnest(0), 519 transforms.eliminate_semi_and_anti_joins, 520 ] 521 ), 522 exp.StarMap: rename_func("OBJECT_CONSTRUCT"), 523 exp.StartsWith: rename_func("STARTSWITH"), 524 exp.StrPosition: lambda self, e: self.func( 525 "POSITION", e.args.get("substr"), e.this, e.args.get("position") 526 ), 527 exp.StrToTime: lambda self, e: f"TO_TIMESTAMP({self.sql(e, 'this')}, {self.format_time(e)})", 528 exp.Struct: lambda self, e: self.func( 529 "OBJECT_CONSTRUCT", 530 *(arg for expression in e.expressions for arg in expression.flatten()), 531 ), 532 exp.Stuff: rename_func("INSERT"), 533 exp.TimestampTrunc: timestamptrunc_sql, 534 exp.TimeStrToTime: timestrtotime_sql, 535 exp.TimeToStr: lambda self, e: self.func( 536 "TO_CHAR", exp.cast(e.this, "timestamp"), self.format_time(e) 537 ), 538 exp.TimeToUnix: lambda self, e: f"EXTRACT(epoch_second FROM {self.sql(e, 'this')})", 539 exp.ToChar: lambda self, e: self.function_fallback_sql(e), 540 exp.Trim: lambda self, e: self.func("TRIM", e.this, e.expression), 541 exp.TsOrDsToDate: ts_or_ds_to_date_sql("snowflake"), 542 exp.UnixToTime: _unix_to_time_sql, 543 exp.VarMap: lambda self, e: var_map_sql(self, e, "OBJECT_CONSTRUCT"), 544 exp.WeekOfYear: rename_func("WEEKOFYEAR"), 545 exp.Xor: rename_func("BOOLXOR"), 546 } 547 548 TYPE_MAPPING = { 549 **generator.Generator.TYPE_MAPPING, 550 exp.DataType.Type.TIMESTAMP: "TIMESTAMPNTZ", 551 } 552 553 STAR_MAPPING = { 554 "except": "EXCLUDE", 555 "replace": "RENAME", 556 } 557 558 PROPERTIES_LOCATION = { 559 **generator.Generator.PROPERTIES_LOCATION, 560 exp.SetProperty: exp.Properties.Location.UNSUPPORTED, 561 exp.VolatileProperty: exp.Properties.Location.UNSUPPORTED, 562 } 563 564 def log_sql(self, expression: exp.Log) -> str: 565 if not expression.expression: 566 return self.func("LN", expression.this) 567 568 return super().log_sql(expression) 569 570 def unnest_sql(self, expression: exp.Unnest) -> str: 571 selects = ["value"] 572 unnest_alias = expression.args.get("alias") 573 574 offset = expression.args.get("offset") 575 if offset: 576 if unnest_alias: 577 unnest_alias.append("columns", offset.pop()) 578 579 selects.append("index") 580 581 subquery = exp.Subquery( 582 this=exp.select(*selects).from_( 583 f"TABLE(FLATTEN(INPUT => {self.sql(expression.expressions[0])}))" 584 ), 585 ) 586 alias = self.sql(unnest_alias) 587 alias = f" AS {alias}" if alias else "" 588 return f"{self.sql(subquery)}{alias}" 589 590 def show_sql(self, expression: exp.Show) -> str: 591 scope = self.sql(expression, "scope") 592 scope = f" {scope}" if scope else "" 593 594 scope_kind = self.sql(expression, "scope_kind") 595 if scope_kind: 596 scope_kind = f" IN {scope_kind}" 597 598 return f"SHOW {expression.name}{scope_kind}{scope}" 599 600 def regexpextract_sql(self, expression: exp.RegexpExtract) -> str: 601 # Other dialects don't support all of the following parameters, so we need to 602 # generate default values as necessary to ensure the transpilation is correct 603 group = expression.args.get("group") 604 parameters = expression.args.get("parameters") or (group and exp.Literal.string("c")) 605 occurrence = expression.args.get("occurrence") or (parameters and exp.Literal.number(1)) 606 position = expression.args.get("position") or (occurrence and exp.Literal.number(1)) 607 608 return self.func( 609 "REGEXP_SUBSTR", 610 expression.this, 611 expression.expression, 612 position, 613 occurrence, 614 parameters, 615 group, 616 ) 617 618 def except_op(self, expression: exp.Except) -> str: 619 if not expression.args.get("distinct", False): 620 self.unsupported("EXCEPT with All is not supported in Snowflake") 621 return super().except_op(expression) 622 623 def intersect_op(self, expression: exp.Intersect) -> str: 624 if not expression.args.get("distinct", False): 625 self.unsupported("INTERSECT with All is not supported in Snowflake") 626 return super().intersect_op(expression) 627 628 def describe_sql(self, expression: exp.Describe) -> str: 629 # Default to table if kind is unknown 630 kind_value = expression.args.get("kind") or "TABLE" 631 kind = f" {kind_value}" if kind_value else "" 632 this = f" {self.sql(expression, 'this')}" 633 expressions = self.expressions(expression, flat=True) 634 expressions = f" {expressions}" if expressions else "" 635 return f"DESCRIBE{kind}{this}{expressions}" 636 637 def generatedasidentitycolumnconstraint_sql( 638 self, expression: exp.GeneratedAsIdentityColumnConstraint 639 ) -> str: 640 start = expression.args.get("start") 641 start = f" START {start}" if start else "" 642 increment = expression.args.get("increment") 643 increment = f" INCREMENT {increment}" if increment else "" 644 return f"AUTOINCREMENT{start}{increment}" 645 646 def swaptable_sql(self, expression: exp.SwapTable) -> str: 647 this = self.sql(expression, "this") 648 return f"SWAP WITH {this}"
204class Snowflake(Dialect): 205 # https://docs.snowflake.com/en/sql-reference/identifiers-syntax 206 RESOLVES_IDENTIFIERS_AS_UPPERCASE = True 207 NULL_ORDERING = "nulls_are_large" 208 TIME_FORMAT = "'YYYY-MM-DD HH24:MI:SS'" 209 SUPPORTS_USER_DEFINED_TYPES = False 210 SUPPORTS_SEMI_ANTI_JOIN = False 211 212 TIME_MAPPING = { 213 "YYYY": "%Y", 214 "yyyy": "%Y", 215 "YY": "%y", 216 "yy": "%y", 217 "MMMM": "%B", 218 "mmmm": "%B", 219 "MON": "%b", 220 "mon": "%b", 221 "MM": "%m", 222 "mm": "%m", 223 "DD": "%d", 224 "dd": "%-d", 225 "DY": "%a", 226 "dy": "%w", 227 "HH24": "%H", 228 "hh24": "%H", 229 "HH12": "%I", 230 "hh12": "%I", 231 "MI": "%M", 232 "mi": "%M", 233 "SS": "%S", 234 "ss": "%S", 235 "FF": "%f", 236 "ff": "%f", 237 "FF6": "%f", 238 "ff6": "%f", 239 } 240 241 @classmethod 242 def quote_identifier(cls, expression: E, identify: bool = True) -> E: 243 # This disables quoting DUAL in SELECT ... FROM DUAL, because Snowflake treats an 244 # unquoted DUAL keyword in a special way and does not map it to a user-defined table 245 if ( 246 isinstance(expression, exp.Identifier) 247 and isinstance(expression.parent, exp.Table) 248 and expression.name.lower() == "dual" 249 ): 250 return t.cast(E, expression) 251 252 return super().quote_identifier(expression, identify=identify) 253 254 class Parser(parser.Parser): 255 IDENTIFY_PIVOT_STRINGS = True 256 257 TABLE_ALIAS_TOKENS = parser.Parser.TABLE_ALIAS_TOKENS | {TokenType.WINDOW} 258 259 FUNCTIONS = { 260 **parser.Parser.FUNCTIONS, 261 "ARRAYAGG": exp.ArrayAgg.from_arg_list, 262 "ARRAY_CONSTRUCT": exp.Array.from_arg_list, 263 "ARRAY_GENERATE_RANGE": lambda args: exp.GenerateSeries( 264 # ARRAY_GENERATE_RANGE has an exlusive end; we normalize it to be inclusive 265 start=seq_get(args, 0), 266 end=exp.Sub(this=seq_get(args, 1), expression=exp.Literal.number(1)), 267 step=seq_get(args, 2), 268 ), 269 "ARRAY_TO_STRING": exp.ArrayJoin.from_arg_list, 270 "BITXOR": binary_from_function(exp.BitwiseXor), 271 "BIT_XOR": binary_from_function(exp.BitwiseXor), 272 "BOOLXOR": binary_from_function(exp.Xor), 273 "CONVERT_TIMEZONE": _parse_convert_timezone, 274 "DATE_TRUNC": date_trunc_to_time, 275 "DATEADD": lambda args: exp.DateAdd( 276 this=seq_get(args, 2), expression=seq_get(args, 1), unit=seq_get(args, 0) 277 ), 278 "DATEDIFF": _parse_datediff, 279 "DIV0": _div0_to_if, 280 "FLATTEN": exp.Explode.from_arg_list, 281 "IFF": exp.If.from_arg_list, 282 "LISTAGG": exp.GroupConcat.from_arg_list, 283 "NULLIFZERO": _nullifzero_to_if, 284 "OBJECT_CONSTRUCT": _parse_object_construct, 285 "REGEXP_REPLACE": _parse_regexp_replace, 286 "REGEXP_SUBSTR": exp.RegexpExtract.from_arg_list, 287 "RLIKE": exp.RegexpLike.from_arg_list, 288 "SQUARE": lambda args: exp.Pow(this=seq_get(args, 0), expression=exp.Literal.number(2)), 289 "TIMEDIFF": _parse_datediff, 290 "TIMESTAMPDIFF": _parse_datediff, 291 "TO_ARRAY": exp.Array.from_arg_list, 292 "TO_TIMESTAMP": _parse_to_timestamp, 293 "TO_VARCHAR": exp.ToChar.from_arg_list, 294 "ZEROIFNULL": _zeroifnull_to_if, 295 } 296 297 FUNCTION_PARSERS = { 298 **parser.Parser.FUNCTION_PARSERS, 299 "DATE_PART": _parse_date_part, 300 } 301 FUNCTION_PARSERS.pop("TRIM") 302 303 COLUMN_OPERATORS = { 304 **parser.Parser.COLUMN_OPERATORS, 305 TokenType.COLON: lambda self, this, path: self.expression( 306 exp.Bracket, this=this, expressions=[path] 307 ), 308 } 309 310 TIMESTAMPS = parser.Parser.TIMESTAMPS - {TokenType.TIME} 311 312 RANGE_PARSERS = { 313 **parser.Parser.RANGE_PARSERS, 314 TokenType.LIKE_ANY: binary_range_parser(exp.LikeAny), 315 TokenType.ILIKE_ANY: binary_range_parser(exp.ILikeAny), 316 } 317 318 ALTER_PARSERS = { 319 **parser.Parser.ALTER_PARSERS, 320 "SET": lambda self: self._parse_set(tag=self._match_text_seq("TAG")), 321 "UNSET": lambda self: self.expression( 322 exp.Set, 323 tag=self._match_text_seq("TAG"), 324 expressions=self._parse_csv(self._parse_id_var), 325 unset=True, 326 ), 327 "SWAP": lambda self: self._parse_alter_table_swap(), 328 } 329 330 STATEMENT_PARSERS = { 331 **parser.Parser.STATEMENT_PARSERS, 332 TokenType.SHOW: lambda self: self._parse_show(), 333 } 334 335 SHOW_PARSERS = { 336 "PRIMARY KEYS": _show_parser("PRIMARY KEYS"), 337 "TERSE PRIMARY KEYS": _show_parser("PRIMARY KEYS"), 338 } 339 340 STAGED_FILE_SINGLE_TOKENS = { 341 TokenType.DOT, 342 TokenType.MOD, 343 TokenType.SLASH, 344 } 345 FLATTEN_COLUMNS = ["SEQ", "KEY", "PATH", "INDEX", "VALUE", "THIS"] 346 347 def _parse_lateral(self) -> t.Optional[exp.Lateral]: 348 lateral = super()._parse_lateral() 349 if not lateral: 350 return lateral 351 352 if isinstance(lateral.this, exp.Explode): 353 table_alias = lateral.args.get("alias") 354 columns = [exp.to_identifier(col) for col in self.FLATTEN_COLUMNS] 355 if table_alias and not table_alias.args.get("columns"): 356 table_alias.set("columns", columns) 357 elif not table_alias: 358 exp.alias_(lateral, "_flattened", table=columns, copy=False) 359 360 return lateral 361 362 def _parse_table_parts(self, schema: bool = False) -> exp.Table: 363 # https://docs.snowflake.com/en/user-guide/querying-stage 364 table: t.Optional[exp.Expression] = None 365 if self._match_text_seq("@"): 366 table_name = "@" 367 while self._curr: 368 self._advance() 369 table_name += self._prev.text 370 if not self._match_set(self.STAGED_FILE_SINGLE_TOKENS, advance=False): 371 break 372 while self._match_set(self.STAGED_FILE_SINGLE_TOKENS): 373 table_name += self._prev.text 374 375 table = exp.var(table_name) 376 elif self._match(TokenType.STRING, advance=False): 377 table = self._parse_string() 378 379 if table: 380 file_format = None 381 pattern = None 382 383 if self._match_text_seq("(", "FILE_FORMAT", "=>"): 384 file_format = self._parse_string() or super()._parse_table_parts() 385 if self._match_text_seq(",", "PATTERN", "=>"): 386 pattern = self._parse_string() 387 self._match_r_paren() 388 389 return self.expression(exp.Table, this=table, format=file_format, pattern=pattern) 390 391 return super()._parse_table_parts(schema=schema) 392 393 def _parse_id_var( 394 self, 395 any_token: bool = True, 396 tokens: t.Optional[t.Collection[TokenType]] = None, 397 ) -> t.Optional[exp.Expression]: 398 if self._match_text_seq("IDENTIFIER", "("): 399 identifier = ( 400 super()._parse_id_var(any_token=any_token, tokens=tokens) 401 or self._parse_string() 402 ) 403 self._match_r_paren() 404 return self.expression(exp.Anonymous, this="IDENTIFIER", expressions=[identifier]) 405 406 return super()._parse_id_var(any_token=any_token, tokens=tokens) 407 408 def _parse_show_snowflake(self, this: str) -> exp.Show: 409 scope = None 410 scope_kind = None 411 412 if self._match(TokenType.IN): 413 if self._match_text_seq("ACCOUNT"): 414 scope_kind = "ACCOUNT" 415 elif self._match_set(self.DB_CREATABLES): 416 scope_kind = self._prev.text 417 if self._curr: 418 scope = self._parse_table() 419 elif self._curr: 420 scope_kind = "TABLE" 421 scope = self._parse_table() 422 423 return self.expression(exp.Show, this=this, scope=scope, scope_kind=scope_kind) 424 425 def _parse_alter_table_swap(self) -> exp.SwapTable: 426 self._match_text_seq("WITH") 427 return self.expression(exp.SwapTable, this=self._parse_table(schema=True)) 428 429 class Tokenizer(tokens.Tokenizer): 430 STRING_ESCAPES = ["\\", "'"] 431 HEX_STRINGS = [("x'", "'"), ("X'", "'")] 432 RAW_STRINGS = ["$$"] 433 COMMENTS = ["--", "//", ("/*", "*/")] 434 435 KEYWORDS = { 436 **tokens.Tokenizer.KEYWORDS, 437 "BYTEINT": TokenType.INT, 438 "CHAR VARYING": TokenType.VARCHAR, 439 "CHARACTER VARYING": TokenType.VARCHAR, 440 "EXCLUDE": TokenType.EXCEPT, 441 "ILIKE ANY": TokenType.ILIKE_ANY, 442 "LIKE ANY": TokenType.LIKE_ANY, 443 "MATCH_RECOGNIZE": TokenType.MATCH_RECOGNIZE, 444 "MINUS": TokenType.EXCEPT, 445 "NCHAR VARYING": TokenType.VARCHAR, 446 "PUT": TokenType.COMMAND, 447 "RENAME": TokenType.REPLACE, 448 "SAMPLE": TokenType.TABLE_SAMPLE, 449 "TIMESTAMP_LTZ": TokenType.TIMESTAMPLTZ, 450 "TIMESTAMP_NTZ": TokenType.TIMESTAMP, 451 "TIMESTAMP_TZ": TokenType.TIMESTAMPTZ, 452 "TIMESTAMPNTZ": TokenType.TIMESTAMP, 453 "TOP": TokenType.TOP, 454 } 455 456 SINGLE_TOKENS = { 457 **tokens.Tokenizer.SINGLE_TOKENS, 458 "$": TokenType.PARAMETER, 459 } 460 461 VAR_SINGLE_TOKENS = {"$"} 462 463 COMMANDS = tokens.Tokenizer.COMMANDS - {TokenType.SHOW} 464 465 class Generator(generator.Generator): 466 PARAMETER_TOKEN = "$" 467 MATCHED_BY_SOURCE = False 468 SINGLE_STRING_INTERVAL = True 469 JOIN_HINTS = False 470 TABLE_HINTS = False 471 QUERY_HINTS = False 472 AGGREGATE_FILTER_SUPPORTED = False 473 SUPPORTS_TABLE_COPY = False 474 COLLATE_IS_FUNC = True 475 476 TRANSFORMS = { 477 **generator.Generator.TRANSFORMS, 478 exp.ArgMax: rename_func("MAX_BY"), 479 exp.ArgMin: rename_func("MIN_BY"), 480 exp.Array: inline_array_sql, 481 exp.ArrayConcat: rename_func("ARRAY_CAT"), 482 exp.ArrayJoin: rename_func("ARRAY_TO_STRING"), 483 exp.AtTimeZone: lambda self, e: self.func( 484 "CONVERT_TIMEZONE", e.args.get("zone"), e.this 485 ), 486 exp.BitwiseXor: rename_func("BITXOR"), 487 exp.DateAdd: lambda self, e: self.func("DATEADD", e.text("unit"), e.expression, e.this), 488 exp.DateDiff: lambda self, e: self.func( 489 "DATEDIFF", e.text("unit"), e.expression, e.this 490 ), 491 exp.DateStrToDate: datestrtodate_sql, 492 exp.DataType: _datatype_sql, 493 exp.DayOfMonth: rename_func("DAYOFMONTH"), 494 exp.DayOfWeek: rename_func("DAYOFWEEK"), 495 exp.DayOfYear: rename_func("DAYOFYEAR"), 496 exp.Explode: rename_func("FLATTEN"), 497 exp.Extract: rename_func("DATE_PART"), 498 exp.GenerateSeries: lambda self, e: self.func( 499 "ARRAY_GENERATE_RANGE", e.args["start"], e.args["end"] + 1, e.args.get("step") 500 ), 501 exp.GroupConcat: rename_func("LISTAGG"), 502 exp.If: if_sql(name="IFF", false_value="NULL"), 503 exp.LogicalAnd: rename_func("BOOLAND_AGG"), 504 exp.LogicalOr: rename_func("BOOLOR_AGG"), 505 exp.Map: lambda self, e: var_map_sql(self, e, "OBJECT_CONSTRUCT"), 506 exp.Max: max_or_greatest, 507 exp.Min: min_or_least, 508 exp.PartitionedByProperty: lambda self, e: f"PARTITION BY {self.sql(e, 'this')}", 509 exp.PercentileCont: transforms.preprocess( 510 [transforms.add_within_group_for_percentiles] 511 ), 512 exp.PercentileDisc: transforms.preprocess( 513 [transforms.add_within_group_for_percentiles] 514 ), 515 exp.RegexpILike: _regexpilike_sql, 516 exp.Select: transforms.preprocess( 517 [ 518 transforms.eliminate_distinct_on, 519 transforms.explode_to_unnest(0), 520 transforms.eliminate_semi_and_anti_joins, 521 ] 522 ), 523 exp.StarMap: rename_func("OBJECT_CONSTRUCT"), 524 exp.StartsWith: rename_func("STARTSWITH"), 525 exp.StrPosition: lambda self, e: self.func( 526 "POSITION", e.args.get("substr"), e.this, e.args.get("position") 527 ), 528 exp.StrToTime: lambda self, e: f"TO_TIMESTAMP({self.sql(e, 'this')}, {self.format_time(e)})", 529 exp.Struct: lambda self, e: self.func( 530 "OBJECT_CONSTRUCT", 531 *(arg for expression in e.expressions for arg in expression.flatten()), 532 ), 533 exp.Stuff: rename_func("INSERT"), 534 exp.TimestampTrunc: timestamptrunc_sql, 535 exp.TimeStrToTime: timestrtotime_sql, 536 exp.TimeToStr: lambda self, e: self.func( 537 "TO_CHAR", exp.cast(e.this, "timestamp"), self.format_time(e) 538 ), 539 exp.TimeToUnix: lambda self, e: f"EXTRACT(epoch_second FROM {self.sql(e, 'this')})", 540 exp.ToChar: lambda self, e: self.function_fallback_sql(e), 541 exp.Trim: lambda self, e: self.func("TRIM", e.this, e.expression), 542 exp.TsOrDsToDate: ts_or_ds_to_date_sql("snowflake"), 543 exp.UnixToTime: _unix_to_time_sql, 544 exp.VarMap: lambda self, e: var_map_sql(self, e, "OBJECT_CONSTRUCT"), 545 exp.WeekOfYear: rename_func("WEEKOFYEAR"), 546 exp.Xor: rename_func("BOOLXOR"), 547 } 548 549 TYPE_MAPPING = { 550 **generator.Generator.TYPE_MAPPING, 551 exp.DataType.Type.TIMESTAMP: "TIMESTAMPNTZ", 552 } 553 554 STAR_MAPPING = { 555 "except": "EXCLUDE", 556 "replace": "RENAME", 557 } 558 559 PROPERTIES_LOCATION = { 560 **generator.Generator.PROPERTIES_LOCATION, 561 exp.SetProperty: exp.Properties.Location.UNSUPPORTED, 562 exp.VolatileProperty: exp.Properties.Location.UNSUPPORTED, 563 } 564 565 def log_sql(self, expression: exp.Log) -> str: 566 if not expression.expression: 567 return self.func("LN", expression.this) 568 569 return super().log_sql(expression) 570 571 def unnest_sql(self, expression: exp.Unnest) -> str: 572 selects = ["value"] 573 unnest_alias = expression.args.get("alias") 574 575 offset = expression.args.get("offset") 576 if offset: 577 if unnest_alias: 578 unnest_alias.append("columns", offset.pop()) 579 580 selects.append("index") 581 582 subquery = exp.Subquery( 583 this=exp.select(*selects).from_( 584 f"TABLE(FLATTEN(INPUT => {self.sql(expression.expressions[0])}))" 585 ), 586 ) 587 alias = self.sql(unnest_alias) 588 alias = f" AS {alias}" if alias else "" 589 return f"{self.sql(subquery)}{alias}" 590 591 def show_sql(self, expression: exp.Show) -> str: 592 scope = self.sql(expression, "scope") 593 scope = f" {scope}" if scope else "" 594 595 scope_kind = self.sql(expression, "scope_kind") 596 if scope_kind: 597 scope_kind = f" IN {scope_kind}" 598 599 return f"SHOW {expression.name}{scope_kind}{scope}" 600 601 def regexpextract_sql(self, expression: exp.RegexpExtract) -> str: 602 # Other dialects don't support all of the following parameters, so we need to 603 # generate default values as necessary to ensure the transpilation is correct 604 group = expression.args.get("group") 605 parameters = expression.args.get("parameters") or (group and exp.Literal.string("c")) 606 occurrence = expression.args.get("occurrence") or (parameters and exp.Literal.number(1)) 607 position = expression.args.get("position") or (occurrence and exp.Literal.number(1)) 608 609 return self.func( 610 "REGEXP_SUBSTR", 611 expression.this, 612 expression.expression, 613 position, 614 occurrence, 615 parameters, 616 group, 617 ) 618 619 def except_op(self, expression: exp.Except) -> str: 620 if not expression.args.get("distinct", False): 621 self.unsupported("EXCEPT with All is not supported in Snowflake") 622 return super().except_op(expression) 623 624 def intersect_op(self, expression: exp.Intersect) -> str: 625 if not expression.args.get("distinct", False): 626 self.unsupported("INTERSECT with All is not supported in Snowflake") 627 return super().intersect_op(expression) 628 629 def describe_sql(self, expression: exp.Describe) -> str: 630 # Default to table if kind is unknown 631 kind_value = expression.args.get("kind") or "TABLE" 632 kind = f" {kind_value}" if kind_value else "" 633 this = f" {self.sql(expression, 'this')}" 634 expressions = self.expressions(expression, flat=True) 635 expressions = f" {expressions}" if expressions else "" 636 return f"DESCRIBE{kind}{this}{expressions}" 637 638 def generatedasidentitycolumnconstraint_sql( 639 self, expression: exp.GeneratedAsIdentityColumnConstraint 640 ) -> str: 641 start = expression.args.get("start") 642 start = f" START {start}" if start else "" 643 increment = expression.args.get("increment") 644 increment = f" INCREMENT {increment}" if increment else "" 645 return f"AUTOINCREMENT{start}{increment}" 646 647 def swaptable_sql(self, expression: exp.SwapTable) -> str: 648 this = self.sql(expression, "this") 649 return f"SWAP WITH {this}"
TIME_MAPPING: Dict[str, str] =
{'YYYY': '%Y', 'yyyy': '%Y', 'YY': '%y', 'yy': '%y', 'MMMM': '%B', 'mmmm': '%B', 'MON': '%b', 'mon': '%b', 'MM': '%m', 'mm': '%m', 'DD': '%d', 'dd': '%-d', 'DY': '%a', 'dy': '%w', 'HH24': '%H', 'hh24': '%H', 'HH12': '%I', 'hh12': '%I', 'MI': '%M', 'mi': '%M', 'SS': '%S', 'ss': '%S', 'FF': '%f', 'ff': '%f', 'FF6': '%f', 'ff6': '%f'}
@classmethod
def
quote_identifier(cls, expression: ~E, identify: bool = True) -> ~E:
241 @classmethod 242 def quote_identifier(cls, expression: E, identify: bool = True) -> E: 243 # This disables quoting DUAL in SELECT ... FROM DUAL, because Snowflake treats an 244 # unquoted DUAL keyword in a special way and does not map it to a user-defined table 245 if ( 246 isinstance(expression, exp.Identifier) 247 and isinstance(expression.parent, exp.Table) 248 and expression.name.lower() == "dual" 249 ): 250 return t.cast(E, expression) 251 252 return super().quote_identifier(expression, identify=identify)
tokenizer_class =
<class 'Snowflake.Tokenizer'>
parser_class =
<class 'Snowflake.Parser'>
generator_class =
<class 'Snowflake.Generator'>
TIME_TRIE: Dict =
{'Y': {'Y': {'Y': {'Y': {0: True}}, 0: True}}, 'y': {'y': {'y': {'y': {0: True}}, 0: True}}, 'M': {'M': {'M': {'M': {0: True}}, 0: True}, 'O': {'N': {0: True}}, 'I': {0: True}}, 'm': {'m': {'m': {'m': {0: True}}, 0: True}, 'o': {'n': {0: True}}, 'i': {0: True}}, 'D': {'D': {0: True}, 'Y': {0: True}}, 'd': {'d': {0: True}, 'y': {0: True}}, 'H': {'H': {'2': {'4': {0: True}}, '1': {'2': {0: True}}}}, 'h': {'h': {'2': {'4': {0: True}}, '1': {'2': {0: True}}}}, 'S': {'S': {0: True}}, 's': {'s': {0: True}}, 'F': {'F': {0: True, '6': {0: True}}}, 'f': {'f': {0: True, '6': {0: True}}}}
FORMAT_TRIE: Dict =
{'Y': {'Y': {'Y': {'Y': {0: True}}, 0: True}}, 'y': {'y': {'y': {'y': {0: True}}, 0: True}}, 'M': {'M': {'M': {'M': {0: True}}, 0: True}, 'O': {'N': {0: True}}, 'I': {0: True}}, 'm': {'m': {'m': {'m': {0: True}}, 0: True}, 'o': {'n': {0: True}}, 'i': {0: True}}, 'D': {'D': {0: True}, 'Y': {0: True}}, 'd': {'d': {0: True}, 'y': {0: True}}, 'H': {'H': {'2': {'4': {0: True}}, '1': {'2': {0: True}}}}, 'h': {'h': {'2': {'4': {0: True}}, '1': {'2': {0: True}}}}, 'S': {'S': {0: True}}, 's': {'s': {0: True}}, 'F': {'F': {0: True, '6': {0: True}}}, 'f': {'f': {0: True, '6': {0: True}}}}
INVERSE_TIME_MAPPING: Dict[str, str] =
{'%Y': 'yyyy', '%y': 'yy', '%B': 'mmmm', '%b': 'mon', '%m': 'mm', '%d': 'DD', '%-d': 'dd', '%a': 'DY', '%w': 'dy', '%H': 'hh24', '%I': 'hh12', '%M': 'mi', '%S': 'ss', '%f': 'ff6'}
INVERSE_TIME_TRIE: Dict =
{'%': {'Y': {0: True}, 'y': {0: True}, 'B': {0: True}, 'b': {0: True}, 'm': {0: True}, 'd': {0: True}, '-': {'d': {0: True}}, 'a': {0: True}, 'w': {0: True}, 'H': {0: True}, 'I': {0: True}, 'M': {0: True}, 'S': {0: True}, 'f': {0: True}}}
Inherited Members
- sqlglot.dialects.dialect.Dialect
- INDEX_OFFSET
- UNNEST_COLUMN_ONLY
- ALIAS_POST_TABLESAMPLE
- IDENTIFIERS_CAN_START_WITH_DIGIT
- DPIPE_IS_STRING_CONCAT
- STRICT_STRING_CONCAT
- NORMALIZE_FUNCTIONS
- LOG_BASE_FIRST
- TYPED_DIVISION
- SAFE_DIVISION
- DATE_FORMAT
- DATEINT_FORMAT
- FORMAT_MAPPING
- ESCAPE_SEQUENCES
- PSEUDOCOLUMNS
- get_or_raise
- format_time
- normalize_identifier
- case_sensitive
- can_identify
- parse
- parse_into
- generate
- transpile
- tokenize
- tokenizer
- parser
- generator
254 class Parser(parser.Parser): 255 IDENTIFY_PIVOT_STRINGS = True 256 257 TABLE_ALIAS_TOKENS = parser.Parser.TABLE_ALIAS_TOKENS | {TokenType.WINDOW} 258 259 FUNCTIONS = { 260 **parser.Parser.FUNCTIONS, 261 "ARRAYAGG": exp.ArrayAgg.from_arg_list, 262 "ARRAY_CONSTRUCT": exp.Array.from_arg_list, 263 "ARRAY_GENERATE_RANGE": lambda args: exp.GenerateSeries( 264 # ARRAY_GENERATE_RANGE has an exlusive end; we normalize it to be inclusive 265 start=seq_get(args, 0), 266 end=exp.Sub(this=seq_get(args, 1), expression=exp.Literal.number(1)), 267 step=seq_get(args, 2), 268 ), 269 "ARRAY_TO_STRING": exp.ArrayJoin.from_arg_list, 270 "BITXOR": binary_from_function(exp.BitwiseXor), 271 "BIT_XOR": binary_from_function(exp.BitwiseXor), 272 "BOOLXOR": binary_from_function(exp.Xor), 273 "CONVERT_TIMEZONE": _parse_convert_timezone, 274 "DATE_TRUNC": date_trunc_to_time, 275 "DATEADD": lambda args: exp.DateAdd( 276 this=seq_get(args, 2), expression=seq_get(args, 1), unit=seq_get(args, 0) 277 ), 278 "DATEDIFF": _parse_datediff, 279 "DIV0": _div0_to_if, 280 "FLATTEN": exp.Explode.from_arg_list, 281 "IFF": exp.If.from_arg_list, 282 "LISTAGG": exp.GroupConcat.from_arg_list, 283 "NULLIFZERO": _nullifzero_to_if, 284 "OBJECT_CONSTRUCT": _parse_object_construct, 285 "REGEXP_REPLACE": _parse_regexp_replace, 286 "REGEXP_SUBSTR": exp.RegexpExtract.from_arg_list, 287 "RLIKE": exp.RegexpLike.from_arg_list, 288 "SQUARE": lambda args: exp.Pow(this=seq_get(args, 0), expression=exp.Literal.number(2)), 289 "TIMEDIFF": _parse_datediff, 290 "TIMESTAMPDIFF": _parse_datediff, 291 "TO_ARRAY": exp.Array.from_arg_list, 292 "TO_TIMESTAMP": _parse_to_timestamp, 293 "TO_VARCHAR": exp.ToChar.from_arg_list, 294 "ZEROIFNULL": _zeroifnull_to_if, 295 } 296 297 FUNCTION_PARSERS = { 298 **parser.Parser.FUNCTION_PARSERS, 299 "DATE_PART": _parse_date_part, 300 } 301 FUNCTION_PARSERS.pop("TRIM") 302 303 COLUMN_OPERATORS = { 304 **parser.Parser.COLUMN_OPERATORS, 305 TokenType.COLON: lambda self, this, path: self.expression( 306 exp.Bracket, this=this, expressions=[path] 307 ), 308 } 309 310 TIMESTAMPS = parser.Parser.TIMESTAMPS - {TokenType.TIME} 311 312 RANGE_PARSERS = { 313 **parser.Parser.RANGE_PARSERS, 314 TokenType.LIKE_ANY: binary_range_parser(exp.LikeAny), 315 TokenType.ILIKE_ANY: binary_range_parser(exp.ILikeAny), 316 } 317 318 ALTER_PARSERS = { 319 **parser.Parser.ALTER_PARSERS, 320 "SET": lambda self: self._parse_set(tag=self._match_text_seq("TAG")), 321 "UNSET": lambda self: self.expression( 322 exp.Set, 323 tag=self._match_text_seq("TAG"), 324 expressions=self._parse_csv(self._parse_id_var), 325 unset=True, 326 ), 327 "SWAP": lambda self: self._parse_alter_table_swap(), 328 } 329 330 STATEMENT_PARSERS = { 331 **parser.Parser.STATEMENT_PARSERS, 332 TokenType.SHOW: lambda self: self._parse_show(), 333 } 334 335 SHOW_PARSERS = { 336 "PRIMARY KEYS": _show_parser("PRIMARY KEYS"), 337 "TERSE PRIMARY KEYS": _show_parser("PRIMARY KEYS"), 338 } 339 340 STAGED_FILE_SINGLE_TOKENS = { 341 TokenType.DOT, 342 TokenType.MOD, 343 TokenType.SLASH, 344 } 345 FLATTEN_COLUMNS = ["SEQ", "KEY", "PATH", "INDEX", "VALUE", "THIS"] 346 347 def _parse_lateral(self) -> t.Optional[exp.Lateral]: 348 lateral = super()._parse_lateral() 349 if not lateral: 350 return lateral 351 352 if isinstance(lateral.this, exp.Explode): 353 table_alias = lateral.args.get("alias") 354 columns = [exp.to_identifier(col) for col in self.FLATTEN_COLUMNS] 355 if table_alias and not table_alias.args.get("columns"): 356 table_alias.set("columns", columns) 357 elif not table_alias: 358 exp.alias_(lateral, "_flattened", table=columns, copy=False) 359 360 return lateral 361 362 def _parse_table_parts(self, schema: bool = False) -> exp.Table: 363 # https://docs.snowflake.com/en/user-guide/querying-stage 364 table: t.Optional[exp.Expression] = None 365 if self._match_text_seq("@"): 366 table_name = "@" 367 while self._curr: 368 self._advance() 369 table_name += self._prev.text 370 if not self._match_set(self.STAGED_FILE_SINGLE_TOKENS, advance=False): 371 break 372 while self._match_set(self.STAGED_FILE_SINGLE_TOKENS): 373 table_name += self._prev.text 374 375 table = exp.var(table_name) 376 elif self._match(TokenType.STRING, advance=False): 377 table = self._parse_string() 378 379 if table: 380 file_format = None 381 pattern = None 382 383 if self._match_text_seq("(", "FILE_FORMAT", "=>"): 384 file_format = self._parse_string() or super()._parse_table_parts() 385 if self._match_text_seq(",", "PATTERN", "=>"): 386 pattern = self._parse_string() 387 self._match_r_paren() 388 389 return self.expression(exp.Table, this=table, format=file_format, pattern=pattern) 390 391 return super()._parse_table_parts(schema=schema) 392 393 def _parse_id_var( 394 self, 395 any_token: bool = True, 396 tokens: t.Optional[t.Collection[TokenType]] = None, 397 ) -> t.Optional[exp.Expression]: 398 if self._match_text_seq("IDENTIFIER", "("): 399 identifier = ( 400 super()._parse_id_var(any_token=any_token, tokens=tokens) 401 or self._parse_string() 402 ) 403 self._match_r_paren() 404 return self.expression(exp.Anonymous, this="IDENTIFIER", expressions=[identifier]) 405 406 return super()._parse_id_var(any_token=any_token, tokens=tokens) 407 408 def _parse_show_snowflake(self, this: str) -> exp.Show: 409 scope = None 410 scope_kind = None 411 412 if self._match(TokenType.IN): 413 if self._match_text_seq("ACCOUNT"): 414 scope_kind = "ACCOUNT" 415 elif self._match_set(self.DB_CREATABLES): 416 scope_kind = self._prev.text 417 if self._curr: 418 scope = self._parse_table() 419 elif self._curr: 420 scope_kind = "TABLE" 421 scope = self._parse_table() 422 423 return self.expression(exp.Show, this=this, scope=scope, scope_kind=scope_kind) 424 425 def _parse_alter_table_swap(self) -> exp.SwapTable: 426 self._match_text_seq("WITH") 427 return self.expression(exp.SwapTable, this=self._parse_table(schema=True))
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
TABLE_ALIAS_TOKENS =
{<TokenType.DESCRIBE: 'DESCRIBE'>, <TokenType.SUPER: 'SUPER'>, <TokenType.TIMESTAMP_NS: 'TIMESTAMP_NS'>, <TokenType.ARRAY: 'ARRAY'>, <TokenType.NULLABLE: 'NULLABLE'>, <TokenType.HLLSKETCH: 'HLLSKETCH'>, <TokenType.IMAGE: 'IMAGE'>, <TokenType.TOP: 'TOP'>, <TokenType.GEOMETRY: 'GEOMETRY'>, <TokenType.TSMULTIRANGE: 'TSMULTIRANGE'>, <TokenType.ROWS: 'ROWS'>, <TokenType.UNKNOWN: 'UNKNOWN'>, <TokenType.DELETE: 'DELETE'>, <TokenType.SMALLMONEY: 'SMALLMONEY'>, <TokenType.TABLE: 'TABLE'>, <TokenType.INET: 'INET'>, <TokenType.SOME: 'SOME'>, <TokenType.PSEUDO_TYPE: 'PSEUDO_TYPE'>, <TokenType.ESCAPE: 'ESCAPE'>, <TokenType.ENUM16: 'ENUM16'>, <TokenType.REFERENCES: 'REFERENCES'>, <TokenType.DATERANGE: 'DATERANGE'>, <TokenType.NEXT: 'NEXT'>, <TokenType.UINT128: 'UINT128'>, <TokenType.MEDIUMINT: 'MEDIUMINT'>, <TokenType.DIV: 'DIV'>, <TokenType.EXISTS: 'EXISTS'>, <TokenType.TIMESTAMP_S: 'TIMESTAMP_S'>, <TokenType.SERIAL: 'SERIAL'>, <TokenType.LOAD: 'LOAD'>, <TokenType.NUMMULTIRANGE: 'NUMMULTIRANGE'>, <TokenType.BIGSERIAL: 'BIGSERIAL'>, <TokenType.CURRENT_TIMESTAMP: 'CURRENT_TIMESTAMP'>, <TokenType.UNIQUEIDENTIFIER: 'UNIQUEIDENTIFIER'>, <TokenType.ORDINALITY: 'ORDINALITY'>, <TokenType.FUNCTION: 'FUNCTION'>, <TokenType.NESTED: 'NESTED'>, <TokenType.SET: 'SET'>, <TokenType.GEOGRAPHY: 'GEOGRAPHY'>, <TokenType.BIGINT: 'BIGINT'>, <TokenType.UPDATE: 'UPDATE'>, <TokenType.SHOW: 'SHOW'>, <TokenType.VIEW: 'VIEW'>, <TokenType.PROCEDURE: 'PROCEDURE'>, <TokenType.DOUBLE: 'DOUBLE'>, <TokenType.MEDIUMTEXT: 'MEDIUMTEXT'>, <TokenType.CURRENT_DATE: 'CURRENT_DATE'>, <TokenType.USE: 'USE'>, <TokenType.DESC: 'DESC'>, <TokenType.PARTITION: 'PARTITION'>, <TokenType.FALSE: 'FALSE'>, <TokenType.MERGE: 'MERGE'>, <TokenType.IPADDRESS: 'IPADDRESS'>, <TokenType.INT8RANGE: 'INT8RANGE'>, <TokenType.SMALLSERIAL: 'SMALLSERIAL'>, <TokenType.UDECIMAL: 'UDECIMAL'>, <TokenType.CASE: 'CASE'>, <TokenType.PIVOT: 'PIVOT'>, <TokenType.LOWCARDINALITY: 'LOWCARDINALITY'>, <TokenType.LONGTEXT: 'LONGTEXT'>, <TokenType.BIT: 'BIT'>, <TokenType.COLUMN: 'COLUMN'>, <TokenType.NULL: 'NULL'>, <TokenType.TINYINT: 'TINYINT'>, <TokenType.DATETIME: 'DATETIME'>, <TokenType.DATABASE: 'DATABASE'>, <TokenType.COMMAND: 'COMMAND'>, <TokenType.TIMETZ: 'TIMETZ'>, <TokenType.SEMI: 'SEMI'>, <TokenType.FIXEDSTRING: 'FIXEDSTRING'>, <TokenType.USMALLINT: 'USMALLINT'>, <TokenType.RANGE: 'RANGE'>, <TokenType.INT8MULTIRANGE: 'INT8MULTIRANGE'>, <TokenType.STRUCT: 'STRUCT'>, <TokenType.JSONB: 'JSONB'>, <TokenType.ROWVERSION: 'ROWVERSION'>, <TokenType.IS: 'IS'>, <TokenType.TIMESTAMP_MS: 'TIMESTAMP_MS'>, <TokenType.TIME: 'TIME'>, <TokenType.COLLATE: 'COLLATE'>, <TokenType.UNIQUE: 'UNIQUE'>, <TokenType.FILTER: 'FILTER'>, <TokenType.JSON: 'JSON'>, <TokenType.DATEMULTIRANGE: 'DATEMULTIRANGE'>, <TokenType.TEMPORARY: 'TEMPORARY'>, <TokenType.CURRENT_DATETIME: 'CURRENT_DATETIME'>, <TokenType.BINARY: 'BINARY'>, <TokenType.NCHAR: 'NCHAR'>, <TokenType.AUTO_INCREMENT: 'AUTO_INCREMENT'>, <TokenType.ANTI: 'ANTI'>, <TokenType.UBIGINT: 'UBIGINT'>, <TokenType.TIMESTAMP: 'TIMESTAMP'>, <TokenType.TIMESTAMPTZ: 'TIMESTAMPTZ'>, <TokenType.INT: 'INT'>, <TokenType.BOOLEAN: 'BOOLEAN'>, <TokenType.VOLATILE: 'VOLATILE'>, <TokenType.DICTIONARY: 'DICTIONARY'>, <TokenType.TSRANGE: 'TSRANGE'>, <TokenType.OVERLAPS: 'OVERLAPS'>, <TokenType.RECURSIVE: 'RECURSIVE'>, <TokenType.HSTORE: 'HSTORE'>, <TokenType.KEEP: 'KEEP'>, <TokenType.TINYBLOB: 'TINYBLOB'>, <TokenType.TINYTEXT: 'TINYTEXT'>, <TokenType.IPPREFIX: 'IPPREFIX'>, <TokenType.ENUM: 'ENUM'>, <TokenType.SCHEMA: 'SCHEMA'>, <TokenType.CURRENT_TIME: 'CURRENT_TIME'>, <TokenType.MONEY: 'MONEY'>, <TokenType.DATETIME64: 'DATETIME64'>, <TokenType.VARIANT: 'VARIANT'>, <TokenType.ISNULL: 'ISNULL'>, <TokenType.MEDIUMBLOB: 'MEDIUMBLOB'>, <TokenType.PRAGMA: 'PRAGMA'>, <TokenType.FORMAT: 'FORMAT'>, <TokenType.SETTINGS: 'SETTINGS'>, <TokenType.UINT256: 'UINT256'>, <TokenType.ALL: 'ALL'>, <TokenType.OBJECT_IDENTIFIER: 'OBJECT_IDENTIFIER'>, <TokenType.REFRESH: 'REFRESH'>, <TokenType.TEXT: 'TEXT'>, <TokenType.BEGIN: 'BEGIN'>, <TokenType.TRUE: 'TRUE'>, <TokenType.OBJECT: 'OBJECT'>, <TokenType.INT4RANGE: 'INT4RANGE'>, <TokenType.BIGDECIMAL: 'BIGDECIMAL'>, <TokenType.UUID: 'UUID'>, <TokenType.ANY: 'ANY'>, <TokenType.ASC: 'ASC'>, <TokenType.NVARCHAR: 'NVARCHAR'>, <TokenType.DEFAULT: 'DEFAULT'>, <TokenType.CURRENT_USER: 'CURRENT_USER'>, <TokenType.LONGBLOB: 'LONGBLOB'>, <TokenType.UNPIVOT: 'UNPIVOT'>, <TokenType.MODEL: 'MODEL'>, <TokenType.DATE: 'DATE'>, <TokenType.PERCENT: 'PERCENT'>, <TokenType.INDEX: 'INDEX'>, <TokenType.DECIMAL: 'DECIMAL'>, <TokenType.VARCHAR: 'VARCHAR'>, <TokenType.CONSTRAINT: 'CONSTRAINT'>, <TokenType.UMEDIUMINT: 'UMEDIUMINT'>, <TokenType.YEAR: 'YEAR'>, <TokenType.EXECUTE: 'EXECUTE'>, <TokenType.INTERVAL: 'INTERVAL'>, <TokenType.CHAR: 'CHAR'>, <TokenType.USERDEFINED: 'USERDEFINED'>, <TokenType.INT4MULTIRANGE: 'INT4MULTIRANGE'>, <TokenType.FIRST: 'FIRST'>, <TokenType.KILL: 'KILL'>, <TokenType.VARBINARY: 'VARBINARY'>, <TokenType.ENUM8: 'ENUM8'>, <TokenType.TSTZMULTIRANGE: 'TSTZMULTIRANGE'>, <TokenType.UINT: 'UINT'>, <TokenType.COMMIT: 'COMMIT'>, <TokenType.END: 'END'>, <TokenType.COMMENT: 'COMMENT'>, <TokenType.TSTZRANGE: 'TSTZRANGE'>, <TokenType.INT128: 'INT128'>, <TokenType.FLOAT: 'FLOAT'>, <TokenType.OVERWRITE: 'OVERWRITE'>, <TokenType.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>, <TokenType.NUMRANGE: 'NUMRANGE'>, <TokenType.INT256: 'INT256'>, <TokenType.CACHE: 'CACHE'>, <TokenType.VAR: 'VAR'>, <TokenType.UTINYINT: 'UTINYINT'>, <TokenType.WINDOW: 'WINDOW'>, <TokenType.XML: 'XML'>, <TokenType.ROW: 'ROW'>, <TokenType.SMALLINT: 'SMALLINT'>, <TokenType.MAP: 'MAP'>}
FUNCTIONS =
{'ABS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Abs'>>, 'ANY_VALUE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.AnyValue'>>, 'APPROX_DISTINCT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ApproxDistinct'>>, 'APPROX_COUNT_DISTINCT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ApproxDistinct'>>, 'APPROX_QUANTILE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ApproxQuantile'>>, 'APPROX_TOP_K': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ApproxTopK'>>, 'ARG_MAX': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArgMax'>>, 'ARGMAX': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArgMax'>>, 'MAX_BY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArgMax'>>, 'ARG_MIN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArgMin'>>, 'ARGMIN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArgMin'>>, 'MIN_BY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArgMin'>>, 'ARRAY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Array'>>, 'ARRAY_AGG': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayAgg'>>, 'ARRAY_ALL': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayAll'>>, 'ARRAY_ANY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayAny'>>, 'ARRAY_CONCAT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayConcat'>>, 'ARRAY_CAT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayConcat'>>, 'ARRAY_CONTAINS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayContains'>>, 'FILTER': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayFilter'>>, 'ARRAY_FILTER': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayFilter'>>, 'ARRAY_JOIN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayJoin'>>, 'ARRAY_SIZE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArraySize'>>, 'ARRAY_SORT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArraySort'>>, 'ARRAY_SUM': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArraySum'>>, 'ARRAY_UNION_AGG': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayUnionAgg'>>, 'AVG': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Avg'>>, 'CASE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Case'>>, 'CAST': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Cast'>>, 'CAST_TO_STR_TYPE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.CastToStrType'>>, 'CEIL': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Ceil'>>, 'CEILING': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Ceil'>>, 'CHR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Chr'>>, 'CHAR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Chr'>>, 'COALESCE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Coalesce'>>, 'IFNULL': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Coalesce'>>, 'NVL': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Coalesce'>>, 'COLLATE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Collate'>>, 'CONCAT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Concat'>>, 'CONCAT_WS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ConcatWs'>>, 'COUNT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Count'>>, 'COUNT_IF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.CountIf'>>, 'CURRENT_DATE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.CurrentDate'>>, 'CURRENT_DATETIME': <bound method Func.from_arg_list of <class 'sqlglot.expressions.CurrentDatetime'>>, 'CURRENT_TIME': <bound method Func.from_arg_list of <class 'sqlglot.expressions.CurrentTime'>>, 'CURRENT_TIMESTAMP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.CurrentTimestamp'>>, 'CURRENT_USER': <bound method Func.from_arg_list of <class 'sqlglot.expressions.CurrentUser'>>, 'DATE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Date'>>, 'DATE_ADD': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DateAdd'>>, 'DATEDIFF': <function _parse_datediff>, 'DATE_DIFF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DateDiff'>>, 'DATEFROMPARTS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DateFromParts'>>, 'DATE_STR_TO_DATE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DateStrToDate'>>, 'DATE_SUB': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DateSub'>>, 'DATE_TO_DATE_STR': <function Parser.<lambda>>, 'DATE_TO_DI': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DateToDi'>>, 'DATE_TRUNC': <function date_trunc_to_time>, 'DATETIME_ADD': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DatetimeAdd'>>, 'DATETIME_DIFF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DatetimeDiff'>>, 'DATETIME_SUB': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DatetimeSub'>>, 'DATETIME_TRUNC': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DatetimeTrunc'>>, 'DAY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Day'>>, 'DAY_OF_MONTH': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DayOfMonth'>>, 'DAYOFMONTH': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DayOfMonth'>>, 'DAY_OF_WEEK': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DayOfWeek'>>, 'DAYOFWEEK': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DayOfWeek'>>, 'DAY_OF_YEAR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DayOfYear'>>, 'DAYOFYEAR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DayOfYear'>>, 'DECODE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Decode'>>, 'DI_TO_DATE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.DiToDate'>>, 'ENCODE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Encode'>>, 'EXP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Exp'>>, 'EXPLODE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Explode'>>, 'EXPLODE_OUTER': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ExplodeOuter'>>, 'EXTRACT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Extract'>>, 'FIRST': <bound method Func.from_arg_list of <class 'sqlglot.expressions.First'>>, 'FLATTEN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Explode'>>, 'FLOOR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Floor'>>, 'FROM_BASE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.FromBase'>>, 'FROM_BASE64': <bound method Func.from_arg_list of <class 'sqlglot.expressions.FromBase64'>>, 'GENERATE_SERIES': <bound method Func.from_arg_list of <class 'sqlglot.expressions.GenerateSeries'>>, 'GREATEST': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Greatest'>>, 'GROUP_CONCAT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.GroupConcat'>>, 'HEX': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Hex'>>, 'HLL': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Hll'>>, 'IF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.If'>>, 'INITCAP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Initcap'>>, 'IS_NAN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.IsNan'>>, 'ISNAN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.IsNan'>>, 'J_S_O_N_ARRAY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.JSONArray'>>, 'J_S_O_N_ARRAY_AGG': <bound method Func.from_arg_list of <class 'sqlglot.expressions.JSONArrayAgg'>>, 'JSON_ARRAY_CONTAINS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.JSONArrayContains'>>, 'JSONB_EXTRACT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.JSONBExtract'>>, 'JSONB_EXTRACT_SCALAR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.JSONBExtractScalar'>>, 'JSON_EXTRACT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.JSONExtract'>>, 'JSON_EXTRACT_SCALAR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.JSONExtractScalar'>>, 'JSON_FORMAT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.JSONFormat'>>, 'J_S_O_N_OBJECT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.JSONObject'>>, 'J_S_O_N_TABLE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.JSONTable'>>, 'LAST': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Last'>>, 'LAST_DATE_OF_MONTH': <bound method Func.from_arg_list of <class 'sqlglot.expressions.LastDateOfMonth'>>, 'LEAST': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Least'>>, 'LEFT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Left'>>, 'LENGTH': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Length'>>, 'LEN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Length'>>, 'LEVENSHTEIN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Levenshtein'>>, 'LN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Ln'>>, 'LOG': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Log'>>, 'LOG10': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Log10'>>, 'LOG2': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Log2'>>, 'LOGICAL_AND': <bound method Func.from_arg_list of <class 'sqlglot.expressions.LogicalAnd'>>, 'BOOL_AND': <bound method Func.from_arg_list of <class 'sqlglot.expressions.LogicalAnd'>>, 'BOOLAND_AGG': <bound method Func.from_arg_list of <class 'sqlglot.expressions.LogicalAnd'>>, 'LOGICAL_OR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.LogicalOr'>>, 'BOOL_OR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.LogicalOr'>>, 'BOOLOR_AGG': <bound method Func.from_arg_list of <class 'sqlglot.expressions.LogicalOr'>>, 'LOWER': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Lower'>>, 'LCASE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Lower'>>, 'MD5': <bound method Func.from_arg_list of <class 'sqlglot.expressions.MD5'>>, 'MD5_DIGEST': <bound method Func.from_arg_list of <class 'sqlglot.expressions.MD5Digest'>>, 'MAP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Map'>>, 'MAP_FROM_ENTRIES': <bound method Func.from_arg_list of <class 'sqlglot.expressions.MapFromEntries'>>, 'MATCH_AGAINST': <bound method Func.from_arg_list of <class 'sqlglot.expressions.MatchAgainst'>>, 'MAX': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Max'>>, 'MIN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Min'>>, 'MONTH': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Month'>>, 'MONTHS_BETWEEN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.MonthsBetween'>>, 'NEXT_VALUE_FOR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.NextValueFor'>>, 'NULLIF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Nullif'>>, 'NUMBER_TO_STR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.NumberToStr'>>, 'NVL2': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Nvl2'>>, 'OPEN_J_S_O_N': <bound method Func.from_arg_list of <class 'sqlglot.expressions.OpenJSON'>>, 'PARAMETERIZED_AGG': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ParameterizedAgg'>>, 'PARSE_JSON': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ParseJSON'>>, 'JSON_PARSE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ParseJSON'>>, 'PERCENTILE_CONT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.PercentileCont'>>, 'PERCENTILE_DISC': <bound method Func.from_arg_list of <class 'sqlglot.expressions.PercentileDisc'>>, 'POSEXPLODE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Posexplode'>>, 'POSEXPLODE_OUTER': <bound method Func.from_arg_list of <class 'sqlglot.expressions.PosexplodeOuter'>>, 'POWER': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Pow'>>, 'POW': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Pow'>>, 'PREDICT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Predict'>>, 'QUANTILE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Quantile'>>, 'RANGE_N': <bound method Func.from_arg_list of <class 'sqlglot.expressions.RangeN'>>, 'READ_CSV': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ReadCSV'>>, 'REDUCE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Reduce'>>, 'REGEXP_EXTRACT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.RegexpExtract'>>, 'REGEXP_I_LIKE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.RegexpILike'>>, 'REGEXP_LIKE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.RegexpLike'>>, 'REGEXP_REPLACE': <function _parse_regexp_replace>, 'REGEXP_SPLIT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.RegexpSplit'>>, 'REPEAT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Repeat'>>, 'RIGHT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Right'>>, 'ROUND': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Round'>>, 'ROW_NUMBER': <bound method Func.from_arg_list of <class 'sqlglot.expressions.RowNumber'>>, 'SHA': <bound method Func.from_arg_list of <class 'sqlglot.expressions.SHA'>>, 'SHA1': <bound method Func.from_arg_list of <class 'sqlglot.expressions.SHA'>>, 'SHA2': <bound method Func.from_arg_list of <class 'sqlglot.expressions.SHA2'>>, 'SAFE_CONCAT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.SafeConcat'>>, 'SAFE_DIVIDE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.SafeDivide'>>, 'SET_AGG': <bound method Func.from_arg_list of <class 'sqlglot.expressions.SetAgg'>>, 'SORT_ARRAY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.SortArray'>>, 'SPLIT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Split'>>, 'SQRT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Sqrt'>>, 'STANDARD_HASH': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StandardHash'>>, 'STAR_MAP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StarMap'>>, 'STARTS_WITH': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StartsWith'>>, 'STARTSWITH': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StartsWith'>>, 'STDDEV': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Stddev'>>, 'STDDEV_POP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StddevPop'>>, 'STDDEV_SAMP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StddevSamp'>>, 'STR_POSITION': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StrPosition'>>, 'STR_TO_DATE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StrToDate'>>, 'STR_TO_MAP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StrToMap'>>, 'STR_TO_TIME': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StrToTime'>>, 'STR_TO_UNIX': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StrToUnix'>>, 'STRUCT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Struct'>>, 'STRUCT_EXTRACT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.StructExtract'>>, 'STUFF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Stuff'>>, 'INSERT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Stuff'>>, 'SUBSTRING': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Substring'>>, 'SUM': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Sum'>>, 'TIME_ADD': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimeAdd'>>, 'TIME_DIFF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimeDiff'>>, 'TIME_STR_TO_DATE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimeStrToDate'>>, 'TIME_STR_TO_TIME': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimeStrToTime'>>, 'TIME_STR_TO_UNIX': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimeStrToUnix'>>, 'TIME_SUB': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimeSub'>>, 'TIME_TO_STR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimeToStr'>>, 'TIME_TO_TIME_STR': <function Parser.<lambda>>, 'TIME_TO_UNIX': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimeToUnix'>>, 'TIME_TRUNC': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimeTrunc'>>, 'TIMESTAMP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Timestamp'>>, 'TIMESTAMP_ADD': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimestampAdd'>>, 'TIMESTAMP_DIFF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimestampDiff'>>, 'TIMESTAMP_SUB': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimestampSub'>>, 'TIMESTAMP_TRUNC': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TimestampTrunc'>>, 'TO_BASE64': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ToBase64'>>, 'TO_CHAR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ToChar'>>, 'TO_DAYS': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ToDays'>>, 'TRANSFORM': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Transform'>>, 'TRIM': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Trim'>>, 'TRY_CAST': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TryCast'>>, 'TS_OR_DI_TO_DI': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TsOrDiToDi'>>, 'TS_OR_DS_ADD': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TsOrDsAdd'>>, 'TS_OR_DS_TO_DATE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.TsOrDsToDate'>>, 'TS_OR_DS_TO_DATE_STR': <function Parser.<lambda>>, 'UNHEX': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Unhex'>>, 'UNIX_TO_STR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.UnixToStr'>>, 'UNIX_TO_TIME': <bound method Func.from_arg_list of <class 'sqlglot.expressions.UnixToTime'>>, 'UNIX_TO_TIME_STR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.UnixToTimeStr'>>, 'UPPER': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Upper'>>, 'UCASE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Upper'>>, 'VAR_MAP': <function parse_var_map>, 'VARIANCE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Variance'>>, 'VARIANCE_SAMP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Variance'>>, 'VAR_SAMP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Variance'>>, 'VARIANCE_POP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.VariancePop'>>, 'VAR_POP': <bound method Func.from_arg_list of <class 'sqlglot.expressions.VariancePop'>>, 'WEEK': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Week'>>, 'WEEK_OF_YEAR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.WeekOfYear'>>, 'WEEKOFYEAR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.WeekOfYear'>>, 'WHEN': <bound method Func.from_arg_list of <class 'sqlglot.expressions.When'>>, 'X_M_L_TABLE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.XMLTable'>>, 'XOR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Xor'>>, 'YEAR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Year'>>, 'GLOB': <function Parser.<lambda>>, 'LIKE': <function parse_like>, 'ARRAYAGG': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayAgg'>>, 'ARRAY_CONSTRUCT': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Array'>>, 'ARRAY_GENERATE_RANGE': <function Snowflake.Parser.<lambda>>, 'ARRAY_TO_STRING': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ArrayJoin'>>, 'BITXOR': <function binary_from_function.<locals>.<lambda>>, 'BIT_XOR': <function binary_from_function.<locals>.<lambda>>, 'BOOLXOR': <function binary_from_function.<locals>.<lambda>>, 'CONVERT_TIMEZONE': <function _parse_convert_timezone>, 'DATEADD': <function Snowflake.Parser.<lambda>>, 'DIV0': <function _div0_to_if>, 'IFF': <bound method Func.from_arg_list of <class 'sqlglot.expressions.If'>>, 'LISTAGG': <bound method Func.from_arg_list of <class 'sqlglot.expressions.GroupConcat'>>, 'NULLIFZERO': <function _nullifzero_to_if>, 'OBJECT_CONSTRUCT': <function _parse_object_construct>, 'REGEXP_SUBSTR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.RegexpExtract'>>, 'RLIKE': <bound method Func.from_arg_list of <class 'sqlglot.expressions.RegexpLike'>>, 'SQUARE': <function Snowflake.Parser.<lambda>>, 'TIMEDIFF': <function _parse_datediff>, 'TIMESTAMPDIFF': <function _parse_datediff>, 'TO_ARRAY': <bound method Func.from_arg_list of <class 'sqlglot.expressions.Array'>>, 'TO_TIMESTAMP': <function _parse_to_timestamp>, 'TO_VARCHAR': <bound method Func.from_arg_list of <class 'sqlglot.expressions.ToChar'>>, 'ZEROIFNULL': <function _zeroifnull_to_if>}
FUNCTION_PARSERS =
{'ANY_VALUE': <function Parser.<lambda>>, 'CAST': <function Parser.<lambda>>, 'CONCAT': <function Parser.<lambda>>, 'CONCAT_WS': <function Parser.<lambda>>, 'CONVERT': <function Parser.<lambda>>, 'DECODE': <function Parser.<lambda>>, 'EXTRACT': <function Parser.<lambda>>, 'JSON_OBJECT': <function Parser.<lambda>>, 'JSON_TABLE': <function Parser.<lambda>>, 'LOG': <function Parser.<lambda>>, 'MATCH': <function Parser.<lambda>>, 'OPENJSON': <function Parser.<lambda>>, 'POSITION': <function Parser.<lambda>>, 'PREDICT': <function Parser.<lambda>>, 'SAFE_CAST': <function Parser.<lambda>>, 'STRING_AGG': <function Parser.<lambda>>, 'SUBSTRING': <function Parser.<lambda>>, 'TRY_CAST': <function Parser.<lambda>>, 'TRY_CONVERT': <function Parser.<lambda>>, 'DATE_PART': <function _parse_date_part>}
COLUMN_OPERATORS =
{<TokenType.DOT: 'DOT'>: None, <TokenType.DCOLON: 'DCOLON'>: <function Parser.<lambda>>, <TokenType.ARROW: 'ARROW'>: <function Parser.<lambda>>, <TokenType.DARROW: 'DARROW'>: <function Parser.<lambda>>, <TokenType.HASH_ARROW: 'HASH_ARROW'>: <function Parser.<lambda>>, <TokenType.DHASH_ARROW: 'DHASH_ARROW'>: <function Parser.<lambda>>, <TokenType.PLACEHOLDER: 'PLACEHOLDER'>: <function Parser.<lambda>>, <TokenType.COLON: 'COLON'>: <function Snowflake.Parser.<lambda>>}
TIMESTAMPS =
{<TokenType.TIMESTAMP: 'TIMESTAMP'>, <TokenType.TIMESTAMPTZ: 'TIMESTAMPTZ'>, <TokenType.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>, <TokenType.TIMETZ: 'TIMETZ'>}
RANGE_PARSERS =
{<TokenType.BETWEEN: 'BETWEEN'>: <function Parser.<lambda>>, <TokenType.GLOB: 'GLOB'>: <function binary_range_parser.<locals>.<lambda>>, <TokenType.ILIKE: 'ILIKE'>: <function binary_range_parser.<locals>.<lambda>>, <TokenType.IN: 'IN'>: <function Parser.<lambda>>, <TokenType.IRLIKE: 'IRLIKE'>: <function binary_range_parser.<locals>.<lambda>>, <TokenType.IS: 'IS'>: <function Parser.<lambda>>, <TokenType.LIKE: 'LIKE'>: <function binary_range_parser.<locals>.<lambda>>, <TokenType.OVERLAPS: 'OVERLAPS'>: <function binary_range_parser.<locals>.<lambda>>, <TokenType.RLIKE: 'RLIKE'>: <function binary_range_parser.<locals>.<lambda>>, <TokenType.SIMILAR_TO: 'SIMILAR_TO'>: <function binary_range_parser.<locals>.<lambda>>, <TokenType.FOR: 'FOR'>: <function Parser.<lambda>>, <TokenType.LIKE_ANY: 'LIKE_ANY'>: <function binary_range_parser.<locals>.<lambda>>, <TokenType.ILIKE_ANY: 'ILIKE_ANY'>: <function binary_range_parser.<locals>.<lambda>>}
ALTER_PARSERS =
{'ADD': <function Parser.<lambda>>, 'ALTER': <function Parser.<lambda>>, 'DELETE': <function Parser.<lambda>>, 'DROP': <function Parser.<lambda>>, 'RENAME': <function Parser.<lambda>>, 'SET': <function Snowflake.Parser.<lambda>>, 'UNSET': <function Snowflake.Parser.<lambda>>, 'SWAP': <function Snowflake.Parser.<lambda>>}
STATEMENT_PARSERS =
{<TokenType.ALTER: 'ALTER'>: <function Parser.<lambda>>, <TokenType.BEGIN: 'BEGIN'>: <function Parser.<lambda>>, <TokenType.CACHE: 'CACHE'>: <function Parser.<lambda>>, <TokenType.COMMIT: 'COMMIT'>: <function Parser.<lambda>>, <TokenType.COMMENT: 'COMMENT'>: <function Parser.<lambda>>, <TokenType.CREATE: 'CREATE'>: <function Parser.<lambda>>, <TokenType.DELETE: 'DELETE'>: <function Parser.<lambda>>, <TokenType.DESC: 'DESC'>: <function Parser.<lambda>>, <TokenType.DESCRIBE: 'DESCRIBE'>: <function Parser.<lambda>>, <TokenType.DROP: 'DROP'>: <function Parser.<lambda>>, <TokenType.INSERT: 'INSERT'>: <function Parser.<lambda>>, <TokenType.KILL: 'KILL'>: <function Parser.<lambda>>, <TokenType.LOAD: 'LOAD'>: <function Parser.<lambda>>, <TokenType.MERGE: 'MERGE'>: <function Parser.<lambda>>, <TokenType.PIVOT: 'PIVOT'>: <function Parser.<lambda>>, <TokenType.PRAGMA: 'PRAGMA'>: <function Parser.<lambda>>, <TokenType.REFRESH: 'REFRESH'>: <function Parser.<lambda>>, <TokenType.ROLLBACK: 'ROLLBACK'>: <function Parser.<lambda>>, <TokenType.SET: 'SET'>: <function Parser.<lambda>>, <TokenType.UNCACHE: 'UNCACHE'>: <function Parser.<lambda>>, <TokenType.UPDATE: 'UPDATE'>: <function Parser.<lambda>>, <TokenType.USE: 'USE'>: <function Parser.<lambda>>, <TokenType.SHOW: 'SHOW'>: <function Snowflake.Parser.<lambda>>}
SHOW_PARSERS =
{'PRIMARY KEYS': <function _show_parser.<locals>._parse>, 'TERSE PRIMARY KEYS': <function _show_parser.<locals>._parse>}
STAGED_FILE_SINGLE_TOKENS =
{<TokenType.MOD: 'MOD'>, <TokenType.DOT: 'DOT'>, <TokenType.SLASH: 'SLASH'>}
SET_TRIE: Dict =
{'GLOBAL': {0: True}, 'LOCAL': {0: True}, 'SESSION': {0: True}, 'TRANSACTION': {0: True}}
FORMAT_TRIE: Dict =
{'Y': {'Y': {'Y': {'Y': {0: True}}, 0: True}}, 'y': {'y': {'y': {'y': {0: True}}, 0: True}}, 'M': {'M': {'M': {'M': {0: True}}, 0: True}, 'O': {'N': {0: True}}, 'I': {0: True}}, 'm': {'m': {'m': {'m': {0: True}}, 0: True}, 'o': {'n': {0: True}}, 'i': {0: True}}, 'D': {'D': {0: True}, 'Y': {0: True}}, 'd': {'d': {0: True}, 'y': {0: True}}, 'H': {'H': {'2': {'4': {0: True}}, '1': {'2': {0: True}}}}, 'h': {'h': {'2': {'4': {0: True}}, '1': {'2': {0: True}}}}, 'S': {'S': {0: True}}, 's': {'s': {0: True}}, 'F': {'F': {0: True, '6': {0: True}}}, 'f': {'f': {0: True, '6': {0: True}}}}
TIME_MAPPING: Dict[str, str] =
{'YYYY': '%Y', 'yyyy': '%Y', 'YY': '%y', 'yy': '%y', 'MMMM': '%B', 'mmmm': '%B', 'MON': '%b', 'mon': '%b', 'MM': '%m', 'mm': '%m', 'DD': '%d', 'dd': '%-d', 'DY': '%a', 'dy': '%w', 'HH24': '%H', 'hh24': '%H', 'HH12': '%I', 'hh12': '%I', 'MI': '%M', 'mi': '%M', 'SS': '%S', 'ss': '%S', 'FF': '%f', 'ff': '%f', 'FF6': '%f', 'ff6': '%f'}
TIME_TRIE: Dict =
{'Y': {'Y': {'Y': {'Y': {0: True}}, 0: True}}, 'y': {'y': {'y': {'y': {0: True}}, 0: True}}, 'M': {'M': {'M': {'M': {0: True}}, 0: True}, 'O': {'N': {0: True}}, 'I': {0: True}}, 'm': {'m': {'m': {'m': {0: True}}, 0: True}, 'o': {'n': {0: True}}, 'i': {0: True}}, 'D': {'D': {0: True}, 'Y': {0: True}}, 'd': {'d': {0: True}, 'y': {0: True}}, 'H': {'H': {'2': {'4': {0: True}}, '1': {'2': {0: True}}}}, 'h': {'h': {'2': {'4': {0: True}}, '1': {'2': {0: True}}}}, 'S': {'S': {0: True}}, 's': {'s': {0: True}}, 'F': {'F': {0: True, '6': {0: True}}}, 'f': {'f': {0: True, '6': {0: True}}}}
Inherited Members
- sqlglot.parser.Parser
- Parser
- NO_PAREN_FUNCTIONS
- STRUCT_TYPE_TOKENS
- NESTED_TYPE_TOKENS
- ENUM_TYPE_TOKENS
- TYPE_TOKENS
- SIGNED_TO_UNSIGNED_TYPE_TOKEN
- SUBQUERY_PREDICATES
- RESERVED_KEYWORDS
- DB_CREATABLES
- CREATABLES
- ID_VAR_TOKENS
- INTERVAL_VARS
- COMMENT_TABLE_ALIAS_TOKENS
- UPDATE_ALIAS_TOKENS
- TRIM_TYPES
- FUNC_TOKENS
- CONJUNCTION
- EQUALITY
- COMPARISON
- BITWISE
- TERM
- FACTOR
- EXPONENT
- TIMES
- SET_OPERATIONS
- JOIN_METHODS
- JOIN_SIDES
- JOIN_KINDS
- JOIN_HINTS
- LAMBDAS
- EXPRESSION_PARSERS
- UNARY_PARSERS
- PRIMARY_PARSERS
- PLACEHOLDER_PARSERS
- PROPERTY_PARSERS
- CONSTRAINT_PARSERS
- SCHEMA_UNNAMED_CONSTRAINTS
- NO_PAREN_FUNCTION_PARSERS
- INVALID_FUNC_NAME_TOKENS
- FUNCTIONS_WITH_ALIASED_ARGS
- QUERY_MODIFIER_PARSERS
- SET_PARSERS
- TYPE_LITERAL_PARSERS
- MODIFIABLES
- DDL_SELECT_TOKENS
- PRE_VOLATILE_TOKENS
- TRANSACTION_KIND
- TRANSACTION_CHARACTERISTICS
- INSERT_ALTERNATIVES
- CLONE_KEYWORDS
- CLONE_KINDS
- OPCLASS_FOLLOW_KEYWORDS
- OPTYPE_FOLLOW_TOKENS
- TABLE_INDEX_HINT_TOKENS
- WINDOW_ALIAS_TOKENS
- WINDOW_BEFORE_PAREN_TOKENS
- WINDOW_SIDES
- FETCH_TOKENS
- ADD_CONSTRAINT_TOKENS
- DISTINCT_TOKENS
- NULL_TOKENS
- UNNEST_OFFSET_ALIAS_TOKENS
- STRICT_CAST
- CONCAT_NULL_OUTPUTS_STRING
- PREFIXED_PIVOT_COLUMNS
- LOG_BASE_FIRST
- LOG_DEFAULTS_TO_LN
- ALTER_TABLE_ADD_COLUMN_KEYWORD
- TABLESAMPLE_CSV
- SET_REQUIRES_ASSIGNMENT_DELIMITER
- TRIM_PATTERN_FIRST
- TYPED_DIVISION
- SAFE_DIVISION
- INDEX_OFFSET
- UNNEST_COLUMN_ONLY
- ALIAS_POST_TABLESAMPLE
- STRICT_STRING_CONCAT
- NORMALIZE_FUNCTIONS
- FORMAT_MAPPING
- error_level
- error_message_context
- max_errors
- reset
- parse
- parse_into
- check_errors
- raise_error
- expression
- validate_expression
- errors
- sql
429 class Tokenizer(tokens.Tokenizer): 430 STRING_ESCAPES = ["\\", "'"] 431 HEX_STRINGS = [("x'", "'"), ("X'", "'")] 432 RAW_STRINGS = ["$$"] 433 COMMENTS = ["--", "//", ("/*", "*/")] 434 435 KEYWORDS = { 436 **tokens.Tokenizer.KEYWORDS, 437 "BYTEINT": TokenType.INT, 438 "CHAR VARYING": TokenType.VARCHAR, 439 "CHARACTER VARYING": TokenType.VARCHAR, 440 "EXCLUDE": TokenType.EXCEPT, 441 "ILIKE ANY": TokenType.ILIKE_ANY, 442 "LIKE ANY": TokenType.LIKE_ANY, 443 "MATCH_RECOGNIZE": TokenType.MATCH_RECOGNIZE, 444 "MINUS": TokenType.EXCEPT, 445 "NCHAR VARYING": TokenType.VARCHAR, 446 "PUT": TokenType.COMMAND, 447 "RENAME": TokenType.REPLACE, 448 "SAMPLE": TokenType.TABLE_SAMPLE, 449 "TIMESTAMP_LTZ": TokenType.TIMESTAMPLTZ, 450 "TIMESTAMP_NTZ": TokenType.TIMESTAMP, 451 "TIMESTAMP_TZ": TokenType.TIMESTAMPTZ, 452 "TIMESTAMPNTZ": TokenType.TIMESTAMP, 453 "TOP": TokenType.TOP, 454 } 455 456 SINGLE_TOKENS = { 457 **tokens.Tokenizer.SINGLE_TOKENS, 458 "$": TokenType.PARAMETER, 459 } 460 461 VAR_SINGLE_TOKENS = {"$"} 462 463 COMMANDS = tokens.Tokenizer.COMMANDS - {TokenType.SHOW}
KEYWORDS =
{'{%': <TokenType.BLOCK_START: 'BLOCK_START'>, '{%+': <TokenType.BLOCK_START: 'BLOCK_START'>, '{%-': <TokenType.BLOCK_START: 'BLOCK_START'>, '%}': <TokenType.BLOCK_END: 'BLOCK_END'>, '+%}': <TokenType.BLOCK_END: 'BLOCK_END'>, '-%}': <TokenType.BLOCK_END: 'BLOCK_END'>, '{{+': <TokenType.BLOCK_START: 'BLOCK_START'>, '{{-': <TokenType.BLOCK_START: 'BLOCK_START'>, '+}}': <TokenType.BLOCK_END: 'BLOCK_END'>, '-}}': <TokenType.BLOCK_END: 'BLOCK_END'>, '/*+': <TokenType.HINT: 'HINT'>, '==': <TokenType.EQ: 'EQ'>, '::': <TokenType.DCOLON: 'DCOLON'>, '||': <TokenType.DPIPE: 'DPIPE'>, '>=': <TokenType.GTE: 'GTE'>, '<=': <TokenType.LTE: 'LTE'>, '<>': <TokenType.NEQ: 'NEQ'>, '!=': <TokenType.NEQ: 'NEQ'>, '<=>': <TokenType.NULLSAFE_EQ: 'NULLSAFE_EQ'>, '->': <TokenType.ARROW: 'ARROW'>, '->>': <TokenType.DARROW: 'DARROW'>, '=>': <TokenType.FARROW: 'FARROW'>, '#>': <TokenType.HASH_ARROW: 'HASH_ARROW'>, '#>>': <TokenType.DHASH_ARROW: 'DHASH_ARROW'>, '<->': <TokenType.LR_ARROW: 'LR_ARROW'>, '&&': <TokenType.DAMP: 'DAMP'>, '??': <TokenType.DQMARK: 'DQMARK'>, 'ALL': <TokenType.ALL: 'ALL'>, 'ALWAYS': <TokenType.ALWAYS: 'ALWAYS'>, 'AND': <TokenType.AND: 'AND'>, 'ANTI': <TokenType.ANTI: 'ANTI'>, 'ANY': <TokenType.ANY: 'ANY'>, 'ASC': <TokenType.ASC: 'ASC'>, 'AS': <TokenType.ALIAS: 'ALIAS'>, 'ASOF': <TokenType.ASOF: 'ASOF'>, 'AUTOINCREMENT': <TokenType.AUTO_INCREMENT: 'AUTO_INCREMENT'>, 'AUTO_INCREMENT': <TokenType.AUTO_INCREMENT: 'AUTO_INCREMENT'>, 'BEGIN': <TokenType.BEGIN: 'BEGIN'>, 'BETWEEN': <TokenType.BETWEEN: 'BETWEEN'>, 'CACHE': <TokenType.CACHE: 'CACHE'>, 'UNCACHE': <TokenType.UNCACHE: 'UNCACHE'>, 'CASE': <TokenType.CASE: 'CASE'>, 'CHARACTER SET': <TokenType.CHARACTER_SET: 'CHARACTER_SET'>, 'CLUSTER BY': <TokenType.CLUSTER_BY: 'CLUSTER_BY'>, 'COLLATE': <TokenType.COLLATE: 'COLLATE'>, 'COLUMN': <TokenType.COLUMN: 'COLUMN'>, 'COMMIT': <TokenType.COMMIT: 'COMMIT'>, 'CONNECT BY': <TokenType.CONNECT_BY: 'CONNECT_BY'>, 'CONSTRAINT': <TokenType.CONSTRAINT: 'CONSTRAINT'>, 'CREATE': <TokenType.CREATE: 'CREATE'>, 'CROSS': <TokenType.CROSS: 'CROSS'>, 'CUBE': <TokenType.CUBE: 'CUBE'>, 'CURRENT_DATE': <TokenType.CURRENT_DATE: 'CURRENT_DATE'>, 'CURRENT_TIME': <TokenType.CURRENT_TIME: 'CURRENT_TIME'>, 'CURRENT_TIMESTAMP': <TokenType.CURRENT_TIMESTAMP: 'CURRENT_TIMESTAMP'>, 'CURRENT_USER': <TokenType.CURRENT_USER: 'CURRENT_USER'>, 'DATABASE': <TokenType.DATABASE: 'DATABASE'>, 'DEFAULT': <TokenType.DEFAULT: 'DEFAULT'>, 'DELETE': <TokenType.DELETE: 'DELETE'>, 'DESC': <TokenType.DESC: 'DESC'>, 'DESCRIBE': <TokenType.DESCRIBE: 'DESCRIBE'>, 'DISTINCT': <TokenType.DISTINCT: 'DISTINCT'>, 'DISTRIBUTE BY': <TokenType.DISTRIBUTE_BY: 'DISTRIBUTE_BY'>, 'DIV': <TokenType.DIV: 'DIV'>, 'DROP': <TokenType.DROP: 'DROP'>, 'ELSE': <TokenType.ELSE: 'ELSE'>, 'END': <TokenType.END: 'END'>, 'ESCAPE': <TokenType.ESCAPE: 'ESCAPE'>, 'EXCEPT': <TokenType.EXCEPT: 'EXCEPT'>, 'EXECUTE': <TokenType.EXECUTE: 'EXECUTE'>, 'EXISTS': <TokenType.EXISTS: 'EXISTS'>, 'FALSE': <TokenType.FALSE: 'FALSE'>, 'FETCH': <TokenType.FETCH: 'FETCH'>, 'FILTER': <TokenType.FILTER: 'FILTER'>, 'FIRST': <TokenType.FIRST: 'FIRST'>, 'FULL': <TokenType.FULL: 'FULL'>, 'FUNCTION': <TokenType.FUNCTION: 'FUNCTION'>, 'FOR': <TokenType.FOR: 'FOR'>, 'FOREIGN KEY': <TokenType.FOREIGN_KEY: 'FOREIGN_KEY'>, 'FORMAT': <TokenType.FORMAT: 'FORMAT'>, 'FROM': <TokenType.FROM: 'FROM'>, 'GEOGRAPHY': <TokenType.GEOGRAPHY: 'GEOGRAPHY'>, 'GEOMETRY': <TokenType.GEOMETRY: 'GEOMETRY'>, 'GLOB': <TokenType.GLOB: 'GLOB'>, 'GROUP BY': <TokenType.GROUP_BY: 'GROUP_BY'>, 'GROUPING SETS': <TokenType.GROUPING_SETS: 'GROUPING_SETS'>, 'HAVING': <TokenType.HAVING: 'HAVING'>, 'ILIKE': <TokenType.ILIKE: 'ILIKE'>, 'IN': <TokenType.IN: 'IN'>, 'INDEX': <TokenType.INDEX: 'INDEX'>, 'INET': <TokenType.INET: 'INET'>, 'INNER': <TokenType.INNER: 'INNER'>, 'INSERT': <TokenType.INSERT: 'INSERT'>, 'INTERVAL': <TokenType.INTERVAL: 'INTERVAL'>, 'INTERSECT': <TokenType.INTERSECT: 'INTERSECT'>, 'INTO': <TokenType.INTO: 'INTO'>, 'IS': <TokenType.IS: 'IS'>, 'ISNULL': <TokenType.ISNULL: 'ISNULL'>, 'JOIN': <TokenType.JOIN: 'JOIN'>, 'KEEP': <TokenType.KEEP: 'KEEP'>, 'KILL': <TokenType.KILL: 'KILL'>, 'LATERAL': <TokenType.LATERAL: 'LATERAL'>, 'LEFT': <TokenType.LEFT: 'LEFT'>, 'LIKE': <TokenType.LIKE: 'LIKE'>, 'LIMIT': <TokenType.LIMIT: 'LIMIT'>, 'LOAD': <TokenType.LOAD: 'LOAD'>, 'LOCK': <TokenType.LOCK: 'LOCK'>, 'MERGE': <TokenType.MERGE: 'MERGE'>, 'NATURAL': <TokenType.NATURAL: 'NATURAL'>, 'NEXT': <TokenType.NEXT: 'NEXT'>, 'NOT': <TokenType.NOT: 'NOT'>, 'NOTNULL': <TokenType.NOTNULL: 'NOTNULL'>, 'NULL': <TokenType.NULL: 'NULL'>, 'OBJECT': <TokenType.OBJECT: 'OBJECT'>, 'OFFSET': <TokenType.OFFSET: 'OFFSET'>, 'ON': <TokenType.ON: 'ON'>, 'OR': <TokenType.OR: 'OR'>, 'XOR': <TokenType.XOR: 'XOR'>, 'ORDER BY': <TokenType.ORDER_BY: 'ORDER_BY'>, 'ORDINALITY': <TokenType.ORDINALITY: 'ORDINALITY'>, 'OUTER': <TokenType.OUTER: 'OUTER'>, 'OVER': <TokenType.OVER: 'OVER'>, 'OVERLAPS': <TokenType.OVERLAPS: 'OVERLAPS'>, 'OVERWRITE': <TokenType.OVERWRITE: 'OVERWRITE'>, 'PARTITION': <TokenType.PARTITION: 'PARTITION'>, 'PARTITION BY': <TokenType.PARTITION_BY: 'PARTITION_BY'>, 'PARTITIONED BY': <TokenType.PARTITION_BY: 'PARTITION_BY'>, 'PARTITIONED_BY': <TokenType.PARTITION_BY: 'PARTITION_BY'>, 'PERCENT': <TokenType.PERCENT: 'PERCENT'>, 'PIVOT': <TokenType.PIVOT: 'PIVOT'>, 'PRAGMA': <TokenType.PRAGMA: 'PRAGMA'>, 'PRIMARY KEY': <TokenType.PRIMARY_KEY: 'PRIMARY_KEY'>, 'PROCEDURE': <TokenType.PROCEDURE: 'PROCEDURE'>, 'QUALIFY': <TokenType.QUALIFY: 'QUALIFY'>, 'RANGE': <TokenType.RANGE: 'RANGE'>, 'RECURSIVE': <TokenType.RECURSIVE: 'RECURSIVE'>, 'REGEXP': <TokenType.RLIKE: 'RLIKE'>, 'REPLACE': <TokenType.REPLACE: 'REPLACE'>, 'RETURNING': <TokenType.RETURNING: 'RETURNING'>, 'REFERENCES': <TokenType.REFERENCES: 'REFERENCES'>, 'RIGHT': <TokenType.RIGHT: 'RIGHT'>, 'RLIKE': <TokenType.RLIKE: 'RLIKE'>, 'ROLLBACK': <TokenType.ROLLBACK: 'ROLLBACK'>, 'ROLLUP': <TokenType.ROLLUP: 'ROLLUP'>, 'ROW': <TokenType.ROW: 'ROW'>, 'ROWS': <TokenType.ROWS: 'ROWS'>, 'SCHEMA': <TokenType.SCHEMA: 'SCHEMA'>, 'SELECT': <TokenType.SELECT: 'SELECT'>, 'SEMI': <TokenType.SEMI: 'SEMI'>, 'SET': <TokenType.SET: 'SET'>, 'SETTINGS': <TokenType.SETTINGS: 'SETTINGS'>, 'SHOW': <TokenType.SHOW: 'SHOW'>, 'SIMILAR TO': <TokenType.SIMILAR_TO: 'SIMILAR_TO'>, 'SOME': <TokenType.SOME: 'SOME'>, 'SORT BY': <TokenType.SORT_BY: 'SORT_BY'>, 'START WITH': <TokenType.START_WITH: 'START_WITH'>, 'TABLE': <TokenType.TABLE: 'TABLE'>, 'TABLESAMPLE': <TokenType.TABLE_SAMPLE: 'TABLE_SAMPLE'>, 'TEMP': <TokenType.TEMPORARY: 'TEMPORARY'>, 'TEMPORARY': <TokenType.TEMPORARY: 'TEMPORARY'>, 'THEN': <TokenType.THEN: 'THEN'>, 'TRUE': <TokenType.TRUE: 'TRUE'>, 'UNION': <TokenType.UNION: 'UNION'>, 'UNKNOWN': <TokenType.UNKNOWN: 'UNKNOWN'>, 'UNNEST': <TokenType.UNNEST: 'UNNEST'>, 'UNPIVOT': <TokenType.UNPIVOT: 'UNPIVOT'>, 'UPDATE': <TokenType.UPDATE: 'UPDATE'>, 'USE': <TokenType.USE: 'USE'>, 'USING': <TokenType.USING: 'USING'>, 'UUID': <TokenType.UUID: 'UUID'>, 'VALUES': <TokenType.VALUES: 'VALUES'>, 'VIEW': <TokenType.VIEW: 'VIEW'>, 'VOLATILE': <TokenType.VOLATILE: 'VOLATILE'>, 'WHEN': <TokenType.WHEN: 'WHEN'>, 'WHERE': <TokenType.WHERE: 'WHERE'>, 'WINDOW': <TokenType.WINDOW: 'WINDOW'>, 'WITH': <TokenType.WITH: 'WITH'>, 'APPLY': <TokenType.APPLY: 'APPLY'>, 'ARRAY': <TokenType.ARRAY: 'ARRAY'>, 'BIT': <TokenType.BIT: 'BIT'>, 'BOOL': <TokenType.BOOLEAN: 'BOOLEAN'>, 'BOOLEAN': <TokenType.BOOLEAN: 'BOOLEAN'>, 'BYTE': <TokenType.TINYINT: 'TINYINT'>, 'MEDIUMINT': <TokenType.MEDIUMINT: 'MEDIUMINT'>, 'INT1': <TokenType.TINYINT: 'TINYINT'>, 'TINYINT': <TokenType.TINYINT: 'TINYINT'>, 'INT16': <TokenType.SMALLINT: 'SMALLINT'>, 'SHORT': <TokenType.SMALLINT: 'SMALLINT'>, 'SMALLINT': <TokenType.SMALLINT: 'SMALLINT'>, 'INT128': <TokenType.INT128: 'INT128'>, 'HUGEINT': <TokenType.INT128: 'INT128'>, 'INT2': <TokenType.SMALLINT: 'SMALLINT'>, 'INTEGER': <TokenType.INT: 'INT'>, 'INT': <TokenType.INT: 'INT'>, 'INT4': <TokenType.INT: 'INT'>, 'INT32': <TokenType.INT: 'INT'>, 'INT64': <TokenType.BIGINT: 'BIGINT'>, 'LONG': <TokenType.BIGINT: 'BIGINT'>, 'BIGINT': <TokenType.BIGINT: 'BIGINT'>, 'INT8': <TokenType.TINYINT: 'TINYINT'>, 'DEC': <TokenType.DECIMAL: 'DECIMAL'>, 'DECIMAL': <TokenType.DECIMAL: 'DECIMAL'>, 'BIGDECIMAL': <TokenType.BIGDECIMAL: 'BIGDECIMAL'>, 'BIGNUMERIC': <TokenType.BIGDECIMAL: 'BIGDECIMAL'>, 'MAP': <TokenType.MAP: 'MAP'>, 'NULLABLE': <TokenType.NULLABLE: 'NULLABLE'>, 'NUMBER': <TokenType.DECIMAL: 'DECIMAL'>, 'NUMERIC': <TokenType.DECIMAL: 'DECIMAL'>, 'FIXED': <TokenType.DECIMAL: 'DECIMAL'>, 'REAL': <TokenType.FLOAT: 'FLOAT'>, 'FLOAT': <TokenType.FLOAT: 'FLOAT'>, 'FLOAT4': <TokenType.FLOAT: 'FLOAT'>, 'FLOAT8': <TokenType.DOUBLE: 'DOUBLE'>, 'DOUBLE': <TokenType.DOUBLE: 'DOUBLE'>, 'DOUBLE PRECISION': <TokenType.DOUBLE: 'DOUBLE'>, 'JSON': <TokenType.JSON: 'JSON'>, 'CHAR': <TokenType.CHAR: 'CHAR'>, 'CHARACTER': <TokenType.CHAR: 'CHAR'>, 'NCHAR': <TokenType.NCHAR: 'NCHAR'>, 'VARCHAR': <TokenType.VARCHAR: 'VARCHAR'>, 'VARCHAR2': <TokenType.VARCHAR: 'VARCHAR'>, 'NVARCHAR': <TokenType.NVARCHAR: 'NVARCHAR'>, 'NVARCHAR2': <TokenType.NVARCHAR: 'NVARCHAR'>, 'STR': <TokenType.TEXT: 'TEXT'>, 'STRING': <TokenType.TEXT: 'TEXT'>, 'TEXT': <TokenType.TEXT: 'TEXT'>, 'LONGTEXT': <TokenType.LONGTEXT: 'LONGTEXT'>, 'MEDIUMTEXT': <TokenType.MEDIUMTEXT: 'MEDIUMTEXT'>, 'TINYTEXT': <TokenType.TINYTEXT: 'TINYTEXT'>, 'CLOB': <TokenType.TEXT: 'TEXT'>, 'LONGVARCHAR': <TokenType.TEXT: 'TEXT'>, 'BINARY': <TokenType.BINARY: 'BINARY'>, 'BLOB': <TokenType.VARBINARY: 'VARBINARY'>, 'LONGBLOB': <TokenType.LONGBLOB: 'LONGBLOB'>, 'MEDIUMBLOB': <TokenType.MEDIUMBLOB: 'MEDIUMBLOB'>, 'TINYBLOB': <TokenType.TINYBLOB: 'TINYBLOB'>, 'BYTEA': <TokenType.VARBINARY: 'VARBINARY'>, 'VARBINARY': <TokenType.VARBINARY: 'VARBINARY'>, 'TIME': <TokenType.TIME: 'TIME'>, 'TIMETZ': <TokenType.TIMETZ: 'TIMETZ'>, 'TIMESTAMP': <TokenType.TIMESTAMP: 'TIMESTAMP'>, 'TIMESTAMPTZ': <TokenType.TIMESTAMPTZ: 'TIMESTAMPTZ'>, 'TIMESTAMPLTZ': <TokenType.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>, 'DATE': <TokenType.DATE: 'DATE'>, 'DATETIME': <TokenType.DATETIME: 'DATETIME'>, 'INT4RANGE': <TokenType.INT4RANGE: 'INT4RANGE'>, 'INT4MULTIRANGE': <TokenType.INT4MULTIRANGE: 'INT4MULTIRANGE'>, 'INT8RANGE': <TokenType.INT8RANGE: 'INT8RANGE'>, 'INT8MULTIRANGE': <TokenType.INT8MULTIRANGE: 'INT8MULTIRANGE'>, 'NUMRANGE': <TokenType.NUMRANGE: 'NUMRANGE'>, 'NUMMULTIRANGE': <TokenType.NUMMULTIRANGE: 'NUMMULTIRANGE'>, 'TSRANGE': <TokenType.TSRANGE: 'TSRANGE'>, 'TSMULTIRANGE': <TokenType.TSMULTIRANGE: 'TSMULTIRANGE'>, 'TSTZRANGE': <TokenType.TSTZRANGE: 'TSTZRANGE'>, 'TSTZMULTIRANGE': <TokenType.TSTZMULTIRANGE: 'TSTZMULTIRANGE'>, 'DATERANGE': <TokenType.DATERANGE: 'DATERANGE'>, 'DATEMULTIRANGE': <TokenType.DATEMULTIRANGE: 'DATEMULTIRANGE'>, 'UNIQUE': <TokenType.UNIQUE: 'UNIQUE'>, 'STRUCT': <TokenType.STRUCT: 'STRUCT'>, 'VARIANT': <TokenType.VARIANT: 'VARIANT'>, 'ALTER': <TokenType.ALTER: 'ALTER'>, 'ANALYZE': <TokenType.COMMAND: 'COMMAND'>, 'CALL': <TokenType.COMMAND: 'COMMAND'>, 'COMMENT': <TokenType.COMMENT: 'COMMENT'>, 'COPY': <TokenType.COMMAND: 'COMMAND'>, 'EXPLAIN': <TokenType.COMMAND: 'COMMAND'>, 'GRANT': <TokenType.COMMAND: 'COMMAND'>, 'OPTIMIZE': <TokenType.COMMAND: 'COMMAND'>, 'PREPARE': <TokenType.COMMAND: 'COMMAND'>, 'TRUNCATE': <TokenType.COMMAND: 'COMMAND'>, 'VACUUM': <TokenType.COMMAND: 'COMMAND'>, 'USER-DEFINED': <TokenType.USERDEFINED: 'USERDEFINED'>, 'FOR VERSION': <TokenType.VERSION_SNAPSHOT: 'VERSION_SNAPSHOT'>, 'FOR TIMESTAMP': <TokenType.TIMESTAMP_SNAPSHOT: 'TIMESTAMP_SNAPSHOT'>, 'BYTEINT': <TokenType.INT: 'INT'>, 'CHAR VARYING': <TokenType.VARCHAR: 'VARCHAR'>, 'CHARACTER VARYING': <TokenType.VARCHAR: 'VARCHAR'>, 'EXCLUDE': <TokenType.EXCEPT: 'EXCEPT'>, 'ILIKE ANY': <TokenType.ILIKE_ANY: 'ILIKE_ANY'>, 'LIKE ANY': <TokenType.LIKE_ANY: 'LIKE_ANY'>, 'MATCH_RECOGNIZE': <TokenType.MATCH_RECOGNIZE: 'MATCH_RECOGNIZE'>, 'MINUS': <TokenType.EXCEPT: 'EXCEPT'>, 'NCHAR VARYING': <TokenType.VARCHAR: 'VARCHAR'>, 'PUT': <TokenType.COMMAND: 'COMMAND'>, 'RENAME': <TokenType.REPLACE: 'REPLACE'>, 'SAMPLE': <TokenType.TABLE_SAMPLE: 'TABLE_SAMPLE'>, 'TIMESTAMP_LTZ': <TokenType.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>, 'TIMESTAMP_NTZ': <TokenType.TIMESTAMP: 'TIMESTAMP'>, 'TIMESTAMP_TZ': <TokenType.TIMESTAMPTZ: 'TIMESTAMPTZ'>, 'TIMESTAMPNTZ': <TokenType.TIMESTAMP: 'TIMESTAMP'>, 'TOP': <TokenType.TOP: 'TOP'>}
SINGLE_TOKENS =
{'(': <TokenType.L_PAREN: 'L_PAREN'>, ')': <TokenType.R_PAREN: 'R_PAREN'>, '[': <TokenType.L_BRACKET: 'L_BRACKET'>, ']': <TokenType.R_BRACKET: 'R_BRACKET'>, '{': <TokenType.L_BRACE: 'L_BRACE'>, '}': <TokenType.R_BRACE: 'R_BRACE'>, '&': <TokenType.AMP: 'AMP'>, '^': <TokenType.CARET: 'CARET'>, ':': <TokenType.COLON: 'COLON'>, ',': <TokenType.COMMA: 'COMMA'>, '.': <TokenType.DOT: 'DOT'>, '-': <TokenType.DASH: 'DASH'>, '=': <TokenType.EQ: 'EQ'>, '>': <TokenType.GT: 'GT'>, '<': <TokenType.LT: 'LT'>, '%': <TokenType.MOD: 'MOD'>, '!': <TokenType.NOT: 'NOT'>, '|': <TokenType.PIPE: 'PIPE'>, '+': <TokenType.PLUS: 'PLUS'>, ';': <TokenType.SEMICOLON: 'SEMICOLON'>, '/': <TokenType.SLASH: 'SLASH'>, '\\': <TokenType.BACKSLASH: 'BACKSLASH'>, '*': <TokenType.STAR: 'STAR'>, '~': <TokenType.TILDA: 'TILDA'>, '?': <TokenType.PLACEHOLDER: 'PLACEHOLDER'>, '@': <TokenType.PARAMETER: 'PARAMETER'>, "'": <TokenType.QUOTE: 'QUOTE'>, '`': <TokenType.IDENTIFIER: 'IDENTIFIER'>, '"': <TokenType.IDENTIFIER: 'IDENTIFIER'>, '#': <TokenType.HASH: 'HASH'>, '$': <TokenType.PARAMETER: 'PARAMETER'>}
465 class Generator(generator.Generator): 466 PARAMETER_TOKEN = "$" 467 MATCHED_BY_SOURCE = False 468 SINGLE_STRING_INTERVAL = True 469 JOIN_HINTS = False 470 TABLE_HINTS = False 471 QUERY_HINTS = False 472 AGGREGATE_FILTER_SUPPORTED = False 473 SUPPORTS_TABLE_COPY = False 474 COLLATE_IS_FUNC = True 475 476 TRANSFORMS = { 477 **generator.Generator.TRANSFORMS, 478 exp.ArgMax: rename_func("MAX_BY"), 479 exp.ArgMin: rename_func("MIN_BY"), 480 exp.Array: inline_array_sql, 481 exp.ArrayConcat: rename_func("ARRAY_CAT"), 482 exp.ArrayJoin: rename_func("ARRAY_TO_STRING"), 483 exp.AtTimeZone: lambda self, e: self.func( 484 "CONVERT_TIMEZONE", e.args.get("zone"), e.this 485 ), 486 exp.BitwiseXor: rename_func("BITXOR"), 487 exp.DateAdd: lambda self, e: self.func("DATEADD", e.text("unit"), e.expression, e.this), 488 exp.DateDiff: lambda self, e: self.func( 489 "DATEDIFF", e.text("unit"), e.expression, e.this 490 ), 491 exp.DateStrToDate: datestrtodate_sql, 492 exp.DataType: _datatype_sql, 493 exp.DayOfMonth: rename_func("DAYOFMONTH"), 494 exp.DayOfWeek: rename_func("DAYOFWEEK"), 495 exp.DayOfYear: rename_func("DAYOFYEAR"), 496 exp.Explode: rename_func("FLATTEN"), 497 exp.Extract: rename_func("DATE_PART"), 498 exp.GenerateSeries: lambda self, e: self.func( 499 "ARRAY_GENERATE_RANGE", e.args["start"], e.args["end"] + 1, e.args.get("step") 500 ), 501 exp.GroupConcat: rename_func("LISTAGG"), 502 exp.If: if_sql(name="IFF", false_value="NULL"), 503 exp.LogicalAnd: rename_func("BOOLAND_AGG"), 504 exp.LogicalOr: rename_func("BOOLOR_AGG"), 505 exp.Map: lambda self, e: var_map_sql(self, e, "OBJECT_CONSTRUCT"), 506 exp.Max: max_or_greatest, 507 exp.Min: min_or_least, 508 exp.PartitionedByProperty: lambda self, e: f"PARTITION BY {self.sql(e, 'this')}", 509 exp.PercentileCont: transforms.preprocess( 510 [transforms.add_within_group_for_percentiles] 511 ), 512 exp.PercentileDisc: transforms.preprocess( 513 [transforms.add_within_group_for_percentiles] 514 ), 515 exp.RegexpILike: _regexpilike_sql, 516 exp.Select: transforms.preprocess( 517 [ 518 transforms.eliminate_distinct_on, 519 transforms.explode_to_unnest(0), 520 transforms.eliminate_semi_and_anti_joins, 521 ] 522 ), 523 exp.StarMap: rename_func("OBJECT_CONSTRUCT"), 524 exp.StartsWith: rename_func("STARTSWITH"), 525 exp.StrPosition: lambda self, e: self.func( 526 "POSITION", e.args.get("substr"), e.this, e.args.get("position") 527 ), 528 exp.StrToTime: lambda self, e: f"TO_TIMESTAMP({self.sql(e, 'this')}, {self.format_time(e)})", 529 exp.Struct: lambda self, e: self.func( 530 "OBJECT_CONSTRUCT", 531 *(arg for expression in e.expressions for arg in expression.flatten()), 532 ), 533 exp.Stuff: rename_func("INSERT"), 534 exp.TimestampTrunc: timestamptrunc_sql, 535 exp.TimeStrToTime: timestrtotime_sql, 536 exp.TimeToStr: lambda self, e: self.func( 537 "TO_CHAR", exp.cast(e.this, "timestamp"), self.format_time(e) 538 ), 539 exp.TimeToUnix: lambda self, e: f"EXTRACT(epoch_second FROM {self.sql(e, 'this')})", 540 exp.ToChar: lambda self, e: self.function_fallback_sql(e), 541 exp.Trim: lambda self, e: self.func("TRIM", e.this, e.expression), 542 exp.TsOrDsToDate: ts_or_ds_to_date_sql("snowflake"), 543 exp.UnixToTime: _unix_to_time_sql, 544 exp.VarMap: lambda self, e: var_map_sql(self, e, "OBJECT_CONSTRUCT"), 545 exp.WeekOfYear: rename_func("WEEKOFYEAR"), 546 exp.Xor: rename_func("BOOLXOR"), 547 } 548 549 TYPE_MAPPING = { 550 **generator.Generator.TYPE_MAPPING, 551 exp.DataType.Type.TIMESTAMP: "TIMESTAMPNTZ", 552 } 553 554 STAR_MAPPING = { 555 "except": "EXCLUDE", 556 "replace": "RENAME", 557 } 558 559 PROPERTIES_LOCATION = { 560 **generator.Generator.PROPERTIES_LOCATION, 561 exp.SetProperty: exp.Properties.Location.UNSUPPORTED, 562 exp.VolatileProperty: exp.Properties.Location.UNSUPPORTED, 563 } 564 565 def log_sql(self, expression: exp.Log) -> str: 566 if not expression.expression: 567 return self.func("LN", expression.this) 568 569 return super().log_sql(expression) 570 571 def unnest_sql(self, expression: exp.Unnest) -> str: 572 selects = ["value"] 573 unnest_alias = expression.args.get("alias") 574 575 offset = expression.args.get("offset") 576 if offset: 577 if unnest_alias: 578 unnest_alias.append("columns", offset.pop()) 579 580 selects.append("index") 581 582 subquery = exp.Subquery( 583 this=exp.select(*selects).from_( 584 f"TABLE(FLATTEN(INPUT => {self.sql(expression.expressions[0])}))" 585 ), 586 ) 587 alias = self.sql(unnest_alias) 588 alias = f" AS {alias}" if alias else "" 589 return f"{self.sql(subquery)}{alias}" 590 591 def show_sql(self, expression: exp.Show) -> str: 592 scope = self.sql(expression, "scope") 593 scope = f" {scope}" if scope else "" 594 595 scope_kind = self.sql(expression, "scope_kind") 596 if scope_kind: 597 scope_kind = f" IN {scope_kind}" 598 599 return f"SHOW {expression.name}{scope_kind}{scope}" 600 601 def regexpextract_sql(self, expression: exp.RegexpExtract) -> str: 602 # Other dialects don't support all of the following parameters, so we need to 603 # generate default values as necessary to ensure the transpilation is correct 604 group = expression.args.get("group") 605 parameters = expression.args.get("parameters") or (group and exp.Literal.string("c")) 606 occurrence = expression.args.get("occurrence") or (parameters and exp.Literal.number(1)) 607 position = expression.args.get("position") or (occurrence and exp.Literal.number(1)) 608 609 return self.func( 610 "REGEXP_SUBSTR", 611 expression.this, 612 expression.expression, 613 position, 614 occurrence, 615 parameters, 616 group, 617 ) 618 619 def except_op(self, expression: exp.Except) -> str: 620 if not expression.args.get("distinct", False): 621 self.unsupported("EXCEPT with All is not supported in Snowflake") 622 return super().except_op(expression) 623 624 def intersect_op(self, expression: exp.Intersect) -> str: 625 if not expression.args.get("distinct", False): 626 self.unsupported("INTERSECT with All is not supported in Snowflake") 627 return super().intersect_op(expression) 628 629 def describe_sql(self, expression: exp.Describe) -> str: 630 # Default to table if kind is unknown 631 kind_value = expression.args.get("kind") or "TABLE" 632 kind = f" {kind_value}" if kind_value else "" 633 this = f" {self.sql(expression, 'this')}" 634 expressions = self.expressions(expression, flat=True) 635 expressions = f" {expressions}" if expressions else "" 636 return f"DESCRIBE{kind}{this}{expressions}" 637 638 def generatedasidentitycolumnconstraint_sql( 639 self, expression: exp.GeneratedAsIdentityColumnConstraint 640 ) -> str: 641 start = expression.args.get("start") 642 start = f" START {start}" if start else "" 643 increment = expression.args.get("increment") 644 increment = f" INCREMENT {increment}" if increment else "" 645 return f"AUTOINCREMENT{start}{increment}" 646 647 def swaptable_sql(self, expression: exp.SwapTable) -> str: 648 this = self.sql(expression, "this") 649 return f"SWAP WITH {this}"
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
TRANSFORMS =
{<class 'sqlglot.expressions.DateAdd'>: <function Snowflake.Generator.<lambda>>, <class 'sqlglot.expressions.TsOrDsAdd'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.CaseSpecificColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.CharacterSetColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.CharacterSetProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.CheckColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.ClusteredColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.CollateColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.CopyGrantsProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.CommentColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.DateFormatColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.DefaultColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.EncodeColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.ExecuteAsProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.ExternalProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.HeapProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.InlineLengthColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.InputModelProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.IntervalSpan'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.LanguageProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.LocationProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.LogProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.MaterializedProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.NoPrimaryIndexProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.NonClusteredColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.NotForReplicationColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.OnCommitProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.OnProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.OnUpdateColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.OutputModelProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.PathColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.RemoteWithConnectionModelProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.ReturnsProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.SampleProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.SetProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.SettingsProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.SqlSecurityProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.StabilityProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.TemporaryProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.ToTableProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.TransientProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.TransformModelProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.TitleColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.UppercaseColumnConstraint'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.VarMap'>: <function Snowflake.Generator.<lambda>>, <class 'sqlglot.expressions.VolatileProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.WithJournalTableProperty'>: <function Generator.<lambda>>, <class 'sqlglot.expressions.ArgMax'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.ArgMin'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.Array'>: <function inline_array_sql>, <class 'sqlglot.expressions.ArrayConcat'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.ArrayJoin'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.AtTimeZone'>: <function Snowflake.Generator.<lambda>>, <class 'sqlglot.expressions.BitwiseXor'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.DateDiff'>: <function Snowflake.Generator.<lambda>>, <class 'sqlglot.expressions.DateStrToDate'>: <function datestrtodate_sql>, <class 'sqlglot.expressions.DataType'>: <function _datatype_sql>, <class 'sqlglot.expressions.DayOfMonth'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.DayOfWeek'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.DayOfYear'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.Explode'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.Extract'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.GenerateSeries'>: <function Snowflake.Generator.<lambda>>, <class 'sqlglot.expressions.GroupConcat'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.If'>: <function if_sql.<locals>._if_sql>, <class 'sqlglot.expressions.LogicalAnd'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.LogicalOr'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.Map'>: <function Snowflake.Generator.<lambda>>, <class 'sqlglot.expressions.Max'>: <function max_or_greatest>, <class 'sqlglot.expressions.Min'>: <function min_or_least>, <class 'sqlglot.expressions.PartitionedByProperty'>: <function Snowflake.Generator.<lambda>>, <class 'sqlglot.expressions.PercentileCont'>: <function preprocess.<locals>._to_sql>, <class 'sqlglot.expressions.PercentileDisc'>: <function preprocess.<locals>._to_sql>, <class 'sqlglot.expressions.RegexpILike'>: <function _regexpilike_sql>, <class 'sqlglot.expressions.Select'>: <function preprocess.<locals>._to_sql>, <class 'sqlglot.expressions.StarMap'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.StartsWith'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.StrPosition'>: <function Snowflake.Generator.<lambda>>, <class 'sqlglot.expressions.StrToTime'>: <function Snowflake.Generator.<lambda>>, <class 'sqlglot.expressions.Struct'>: <function Snowflake.Generator.<lambda>>, <class 'sqlglot.expressions.Stuff'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.TimestampTrunc'>: <function timestamptrunc_sql>, <class 'sqlglot.expressions.TimeStrToTime'>: <function timestrtotime_sql>, <class 'sqlglot.expressions.TimeToStr'>: <function Snowflake.Generator.<lambda>>, <class 'sqlglot.expressions.TimeToUnix'>: <function Snowflake.Generator.<lambda>>, <class 'sqlglot.expressions.ToChar'>: <function Snowflake.Generator.<lambda>>, <class 'sqlglot.expressions.Trim'>: <function Snowflake.Generator.<lambda>>, <class 'sqlglot.expressions.TsOrDsToDate'>: <function ts_or_ds_to_date_sql.<locals>._ts_or_ds_to_date_sql>, <class 'sqlglot.expressions.UnixToTime'>: <function _unix_to_time_sql>, <class 'sqlglot.expressions.WeekOfYear'>: <function rename_func.<locals>.<lambda>>, <class 'sqlglot.expressions.Xor'>: <function rename_func.<locals>.<lambda>>}
TYPE_MAPPING =
{<Type.NCHAR: 'NCHAR'>: 'CHAR', <Type.NVARCHAR: 'NVARCHAR'>: 'VARCHAR', <Type.MEDIUMTEXT: 'MEDIUMTEXT'>: 'TEXT', <Type.LONGTEXT: 'LONGTEXT'>: 'TEXT', <Type.TINYTEXT: 'TINYTEXT'>: 'TEXT', <Type.MEDIUMBLOB: 'MEDIUMBLOB'>: 'BLOB', <Type.LONGBLOB: 'LONGBLOB'>: 'BLOB', <Type.TINYBLOB: 'TINYBLOB'>: 'BLOB', <Type.INET: 'INET'>: 'INET', <Type.TIMESTAMP: 'TIMESTAMP'>: 'TIMESTAMPNTZ'}
PROPERTIES_LOCATION =
{<class 'sqlglot.expressions.AlgorithmProperty'>: <Location.POST_CREATE: 'POST_CREATE'>, <class 'sqlglot.expressions.AutoIncrementProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.BlockCompressionProperty'>: <Location.POST_NAME: 'POST_NAME'>, <class 'sqlglot.expressions.CharacterSetProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.ChecksumProperty'>: <Location.POST_NAME: 'POST_NAME'>, <class 'sqlglot.expressions.CollateProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.CopyGrantsProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.Cluster'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.ClusteredByProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.DataBlocksizeProperty'>: <Location.POST_NAME: 'POST_NAME'>, <class 'sqlglot.expressions.DefinerProperty'>: <Location.POST_CREATE: 'POST_CREATE'>, <class 'sqlglot.expressions.DictRange'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.DictProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.DistKeyProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.DistStyleProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.EngineProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.ExecuteAsProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.ExternalProperty'>: <Location.POST_CREATE: 'POST_CREATE'>, <class 'sqlglot.expressions.FallbackProperty'>: <Location.POST_NAME: 'POST_NAME'>, <class 'sqlglot.expressions.FileFormatProperty'>: <Location.POST_WITH: 'POST_WITH'>, <class 'sqlglot.expressions.FreespaceProperty'>: <Location.POST_NAME: 'POST_NAME'>, <class 'sqlglot.expressions.HeapProperty'>: <Location.POST_WITH: 'POST_WITH'>, <class 'sqlglot.expressions.InputModelProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.IsolatedLoadingProperty'>: <Location.POST_NAME: 'POST_NAME'>, <class 'sqlglot.expressions.JournalProperty'>: <Location.POST_NAME: 'POST_NAME'>, <class 'sqlglot.expressions.LanguageProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.LikeProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.LocationProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.LockingProperty'>: <Location.POST_ALIAS: 'POST_ALIAS'>, <class 'sqlglot.expressions.LogProperty'>: <Location.POST_NAME: 'POST_NAME'>, <class 'sqlglot.expressions.MaterializedProperty'>: <Location.POST_CREATE: 'POST_CREATE'>, <class 'sqlglot.expressions.MergeBlockRatioProperty'>: <Location.POST_NAME: 'POST_NAME'>, <class 'sqlglot.expressions.NoPrimaryIndexProperty'>: <Location.POST_EXPRESSION: 'POST_EXPRESSION'>, <class 'sqlglot.expressions.OnProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.OnCommitProperty'>: <Location.POST_EXPRESSION: 'POST_EXPRESSION'>, <class 'sqlglot.expressions.Order'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.OutputModelProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.PartitionedByProperty'>: <Location.POST_WITH: 'POST_WITH'>, <class 'sqlglot.expressions.PartitionedOfProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.PrimaryKey'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.Property'>: <Location.POST_WITH: 'POST_WITH'>, <class 'sqlglot.expressions.RemoteWithConnectionModelProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.ReturnsProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.RowFormatProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.RowFormatDelimitedProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.RowFormatSerdeProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.SampleProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.SchemaCommentProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.SerdeProperties'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.Set'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.SettingsProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.SetProperty'>: <Location.UNSUPPORTED: 'UNSUPPORTED'>, <class 'sqlglot.expressions.SortKeyProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.SqlSecurityProperty'>: <Location.POST_CREATE: 'POST_CREATE'>, <class 'sqlglot.expressions.StabilityProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.TemporaryProperty'>: <Location.POST_CREATE: 'POST_CREATE'>, <class 'sqlglot.expressions.ToTableProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.TransientProperty'>: <Location.POST_CREATE: 'POST_CREATE'>, <class 'sqlglot.expressions.TransformModelProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.MergeTreeTTL'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>, <class 'sqlglot.expressions.VolatileProperty'>: <Location.UNSUPPORTED: 'UNSUPPORTED'>, <class 'sqlglot.expressions.WithDataProperty'>: <Location.POST_EXPRESSION: 'POST_EXPRESSION'>, <class 'sqlglot.expressions.WithJournalTableProperty'>: <Location.POST_NAME: 'POST_NAME'>, <class 'sqlglot.expressions.WithSystemVersioningProperty'>: <Location.POST_SCHEMA: 'POST_SCHEMA'>}
571 def unnest_sql(self, expression: exp.Unnest) -> str: 572 selects = ["value"] 573 unnest_alias = expression.args.get("alias") 574 575 offset = expression.args.get("offset") 576 if offset: 577 if unnest_alias: 578 unnest_alias.append("columns", offset.pop()) 579 580 selects.append("index") 581 582 subquery = exp.Subquery( 583 this=exp.select(*selects).from_( 584 f"TABLE(FLATTEN(INPUT => {self.sql(expression.expressions[0])}))" 585 ), 586 ) 587 alias = self.sql(unnest_alias) 588 alias = f" AS {alias}" if alias else "" 589 return f"{self.sql(subquery)}{alias}"
591 def show_sql(self, expression: exp.Show) -> str: 592 scope = self.sql(expression, "scope") 593 scope = f" {scope}" if scope else "" 594 595 scope_kind = self.sql(expression, "scope_kind") 596 if scope_kind: 597 scope_kind = f" IN {scope_kind}" 598 599 return f"SHOW {expression.name}{scope_kind}{scope}"
601 def regexpextract_sql(self, expression: exp.RegexpExtract) -> str: 602 # Other dialects don't support all of the following parameters, so we need to 603 # generate default values as necessary to ensure the transpilation is correct 604 group = expression.args.get("group") 605 parameters = expression.args.get("parameters") or (group and exp.Literal.string("c")) 606 occurrence = expression.args.get("occurrence") or (parameters and exp.Literal.number(1)) 607 position = expression.args.get("position") or (occurrence and exp.Literal.number(1)) 608 609 return self.func( 610 "REGEXP_SUBSTR", 611 expression.this, 612 expression.expression, 613 position, 614 occurrence, 615 parameters, 616 group, 617 )
629 def describe_sql(self, expression: exp.Describe) -> str: 630 # Default to table if kind is unknown 631 kind_value = expression.args.get("kind") or "TABLE" 632 kind = f" {kind_value}" if kind_value else "" 633 this = f" {self.sql(expression, 'this')}" 634 expressions = self.expressions(expression, flat=True) 635 expressions = f" {expressions}" if expressions else "" 636 return f"DESCRIBE{kind}{this}{expressions}"
def
generatedasidentitycolumnconstraint_sql( self, expression: sqlglot.expressions.GeneratedAsIdentityColumnConstraint) -> str:
638 def generatedasidentitycolumnconstraint_sql( 639 self, expression: exp.GeneratedAsIdentityColumnConstraint 640 ) -> str: 641 start = expression.args.get("start") 642 start = f" START {start}" if start else "" 643 increment = expression.args.get("increment") 644 increment = f" INCREMENT {increment}" if increment else "" 645 return f"AUTOINCREMENT{start}{increment}"
INVERSE_TIME_MAPPING: Dict[str, str] =
{'%Y': 'yyyy', '%y': 'yy', '%B': 'mmmm', '%b': 'mon', '%m': 'mm', '%d': 'DD', '%-d': 'dd', '%a': 'DY', '%w': 'dy', '%H': 'hh24', '%I': 'hh12', '%M': 'mi', '%S': 'ss', '%f': 'ff6'}
INVERSE_TIME_TRIE: Dict =
{'%': {'Y': {0: True}, 'y': {0: True}, 'B': {0: True}, 'b': {0: True}, 'm': {0: True}, 'd': {0: True}, '-': {'d': {0: True}}, 'a': {0: True}, 'w': {0: True}, 'H': {0: True}, 'I': {0: True}, 'M': {0: True}, 'S': {0: True}, 'f': {0: True}}}
@classmethod
def
can_identify(text: str, identify: str | bool = 'safe') -> bool:
288 @classmethod 289 def can_identify(cls, text: str, identify: str | bool = "safe") -> bool: 290 """Checks if text can be identified given an identify option. 291 292 Args: 293 text: The text to check. 294 identify: 295 "always" or `True`: Always returns true. 296 "safe": True if the identifier is case-insensitive. 297 298 Returns: 299 Whether or not the given text can be identified. 300 """ 301 if identify is True or identify == "always": 302 return True 303 304 if identify == "safe": 305 return not cls.case_sensitive(text) 306 307 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.
TOKENIZER_CLASS =
<class 'Snowflake.Tokenizer'>
Inherited Members
- sqlglot.generator.Generator
- Generator
- LOG_BASE_FIRST
- NULL_ORDERING_SUPPORTED
- LOCKING_READS_SUPPORTED
- EXPLICIT_UNION
- WRAP_DERIVED_VALUES
- CREATE_FUNCTION_RETURN_AS
- INTERVAL_ALLOWS_PLURAL_FORM
- TABLESAMPLE_WITH_METHOD
- TABLESAMPLE_SIZE_IS_PERCENT
- LIMIT_FETCH
- LIMIT_ONLY_LITERALS
- RENAME_TABLE_WITH_DB
- GROUPINGS_SEP
- INDEX_ON
- QUERY_HINT_SEP
- IS_BOOL_ALLOWED
- DUPLICATE_KEY_UPDATE_WITH_SET
- LIMIT_IS_TOP
- RETURNING_END
- COLUMN_JOIN_MARKS_SUPPORTED
- EXTRACT_ALLOWS_QUOTES
- TZ_TO_WITH_TIME_ZONE
- NVL2_SUPPORTED
- VALUES_AS_TABLE
- ALTER_TABLE_ADD_COLUMN_KEYWORD
- UNNEST_WITH_ORDINALITY
- SEMI_ANTI_JOIN_WITH_SIDE
- SUPPORTS_PARAMETERS
- COMPUTED_COLUMN_WITH_TYPE
- TABLESAMPLE_REQUIRES_PARENS
- DATA_TYPE_SPECIFIERS_ALLOWED
- SUPPORTS_NESTED_CTES
- ENSURE_BOOLS
- CTE_RECURSIVE_KEYWORD_REQUIRED
- TYPED_DIVISION
- SAFE_DIVISION
- TIME_PART_SINGULARS
- TOKEN_MAPPING
- STRUCT_DELIMITER
- RESERVED_KEYWORDS
- WITH_SEPARATED_COMMENTS
- EXCLUDE_COMMENTS
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- KEY_VALUE_DEFINITONS
- SENTINEL_LINE_BREAK
- INDEX_OFFSET
- UNNEST_COLUMN_ONLY
- ALIAS_POST_TABLESAMPLE
- IDENTIFIERS_CAN_START_WITH_DIGIT
- STRICT_STRING_CONCAT
- NORMALIZE_FUNCTIONS
- pretty
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- max_text_width
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- normalize_functions
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- sep
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- pad_comment
- maybe_comment
- wrap
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