sqlglot.optimizer.annotate_types
1from __future__ import annotations 2 3import functools 4import typing as t 5 6from sqlglot import exp 7from sqlglot.helper import ( 8 ensure_list, 9 is_date_unit, 10 is_iso_date, 11 is_iso_datetime, 12 seq_get, 13 subclasses, 14) 15from sqlglot.optimizer.scope import Scope, traverse_scope 16from sqlglot.schema import Schema, ensure_schema 17 18if t.TYPE_CHECKING: 19 from sqlglot._typing import B, E 20 21 BinaryCoercionFunc = t.Callable[[exp.Expression, exp.Expression], exp.DataType.Type] 22 BinaryCoercions = t.Dict[ 23 t.Tuple[exp.DataType.Type, exp.DataType.Type], 24 BinaryCoercionFunc, 25 ] 26 27 28def annotate_types( 29 expression: E, 30 schema: t.Optional[t.Dict | Schema] = None, 31 annotators: t.Optional[t.Dict[t.Type[E], t.Callable[[TypeAnnotator, E], E]]] = None, 32 coerces_to: t.Optional[t.Dict[exp.DataType.Type, t.Set[exp.DataType.Type]]] = None, 33) -> E: 34 """ 35 Infers the types of an expression, annotating its AST accordingly. 36 37 Example: 38 >>> import sqlglot 39 >>> schema = {"y": {"cola": "SMALLINT"}} 40 >>> sql = "SELECT x.cola + 2.5 AS cola FROM (SELECT y.cola AS cola FROM y AS y) AS x" 41 >>> annotated_expr = annotate_types(sqlglot.parse_one(sql), schema=schema) 42 >>> annotated_expr.expressions[0].type.this # Get the type of "x.cola + 2.5 AS cola" 43 <Type.DOUBLE: 'DOUBLE'> 44 45 Args: 46 expression: Expression to annotate. 47 schema: Database schema. 48 annotators: Maps expression type to corresponding annotation function. 49 coerces_to: Maps expression type to set of types that it can be coerced into. 50 51 Returns: 52 The expression annotated with types. 53 """ 54 55 schema = ensure_schema(schema) 56 57 return TypeAnnotator(schema, annotators, coerces_to).annotate(expression) 58 59 60def _annotate_with_type_lambda(data_type: exp.DataType.Type) -> t.Callable[[TypeAnnotator, E], E]: 61 return lambda self, e: self._annotate_with_type(e, data_type) 62 63 64def _coerce_date_literal(l: exp.Expression, unit: t.Optional[exp.Expression]) -> exp.DataType.Type: 65 date_text = l.name 66 is_iso_date_ = is_iso_date(date_text) 67 68 if is_iso_date_ and is_date_unit(unit): 69 return exp.DataType.Type.DATE 70 71 # An ISO date is also an ISO datetime, but not vice versa 72 if is_iso_date_ or is_iso_datetime(date_text): 73 return exp.DataType.Type.DATETIME 74 75 return exp.DataType.Type.UNKNOWN 76 77 78def _coerce_date(l: exp.Expression, unit: t.Optional[exp.Expression]) -> exp.DataType.Type: 79 if not is_date_unit(unit): 80 return exp.DataType.Type.DATETIME 81 return l.type.this if l.type else exp.DataType.Type.UNKNOWN 82 83 84def swap_args(func: BinaryCoercionFunc) -> BinaryCoercionFunc: 85 @functools.wraps(func) 86 def _swapped(l: exp.Expression, r: exp.Expression) -> exp.DataType.Type: 87 return func(r, l) 88 89 return _swapped 90 91 92def swap_all(coercions: BinaryCoercions) -> BinaryCoercions: 93 return {**coercions, **{(b, a): swap_args(func) for (a, b), func in coercions.items()}} 94 95 96class _TypeAnnotator(type): 97 def __new__(cls, clsname, bases, attrs): 98 klass = super().__new__(cls, clsname, bases, attrs) 99 100 # Highest-to-lowest type precedence, as specified in Spark's docs (ANSI): 101 # https://spark.apache.org/docs/3.2.0/sql-ref-ansi-compliance.html 102 text_precedence = ( 103 exp.DataType.Type.TEXT, 104 exp.DataType.Type.NVARCHAR, 105 exp.DataType.Type.VARCHAR, 106 exp.DataType.Type.NCHAR, 107 exp.DataType.Type.CHAR, 108 ) 109 numeric_precedence = ( 110 exp.DataType.Type.DOUBLE, 111 exp.DataType.Type.FLOAT, 112 exp.DataType.Type.DECIMAL, 113 exp.DataType.Type.BIGINT, 114 exp.DataType.Type.INT, 115 exp.DataType.Type.SMALLINT, 116 exp.DataType.Type.TINYINT, 117 ) 118 timelike_precedence = ( 119 exp.DataType.Type.TIMESTAMPLTZ, 120 exp.DataType.Type.TIMESTAMPTZ, 121 exp.DataType.Type.TIMESTAMP, 122 exp.DataType.Type.DATETIME, 123 exp.DataType.Type.DATE, 124 ) 125 126 for type_precedence in (text_precedence, numeric_precedence, timelike_precedence): 127 coerces_to = set() 128 for data_type in type_precedence: 129 klass.COERCES_TO[data_type] = coerces_to.copy() 130 coerces_to |= {data_type} 131 132 return klass 133 134 135class TypeAnnotator(metaclass=_TypeAnnotator): 136 TYPE_TO_EXPRESSIONS: t.Dict[exp.DataType.Type, t.Set[t.Type[exp.Expression]]] = { 137 exp.DataType.Type.BIGINT: { 138 exp.ApproxDistinct, 139 exp.ArraySize, 140 exp.Count, 141 exp.Length, 142 }, 143 exp.DataType.Type.BOOLEAN: { 144 exp.Between, 145 exp.Boolean, 146 exp.In, 147 exp.RegexpLike, 148 }, 149 exp.DataType.Type.DATE: { 150 exp.CurrentDate, 151 exp.Date, 152 exp.DateFromParts, 153 exp.DateStrToDate, 154 exp.DiToDate, 155 exp.StrToDate, 156 exp.TimeStrToDate, 157 exp.TsOrDsToDate, 158 }, 159 exp.DataType.Type.DATETIME: { 160 exp.CurrentDatetime, 161 exp.DatetimeAdd, 162 exp.DatetimeSub, 163 }, 164 exp.DataType.Type.DOUBLE: { 165 exp.ApproxQuantile, 166 exp.Avg, 167 exp.Div, 168 exp.Exp, 169 exp.Ln, 170 exp.Log, 171 exp.Log2, 172 exp.Log10, 173 exp.Pow, 174 exp.Quantile, 175 exp.Round, 176 exp.SafeDivide, 177 exp.Sqrt, 178 exp.Stddev, 179 exp.StddevPop, 180 exp.StddevSamp, 181 exp.Variance, 182 exp.VariancePop, 183 }, 184 exp.DataType.Type.INT: { 185 exp.Ceil, 186 exp.DatetimeDiff, 187 exp.DateDiff, 188 exp.Extract, 189 exp.TimestampDiff, 190 exp.TimeDiff, 191 exp.DateToDi, 192 exp.Floor, 193 exp.Levenshtein, 194 exp.StrPosition, 195 exp.TsOrDiToDi, 196 }, 197 exp.DataType.Type.JSON: { 198 exp.ParseJSON, 199 }, 200 exp.DataType.Type.TIMESTAMP: { 201 exp.CurrentTime, 202 exp.CurrentTimestamp, 203 exp.StrToTime, 204 exp.TimeAdd, 205 exp.TimeStrToTime, 206 exp.TimeSub, 207 exp.TimestampAdd, 208 exp.TimestampSub, 209 exp.UnixToTime, 210 }, 211 exp.DataType.Type.TINYINT: { 212 exp.Day, 213 exp.Month, 214 exp.Week, 215 exp.Year, 216 }, 217 exp.DataType.Type.VARCHAR: { 218 exp.ArrayConcat, 219 exp.Concat, 220 exp.ConcatWs, 221 exp.DateToDateStr, 222 exp.GroupConcat, 223 exp.Initcap, 224 exp.Lower, 225 exp.Substring, 226 exp.TimeToStr, 227 exp.TimeToTimeStr, 228 exp.Trim, 229 exp.TsOrDsToDateStr, 230 exp.UnixToStr, 231 exp.UnixToTimeStr, 232 exp.Upper, 233 }, 234 } 235 236 ANNOTATORS: t.Dict = { 237 **{ 238 expr_type: lambda self, e: self._annotate_unary(e) 239 for expr_type in subclasses(exp.__name__, (exp.Unary, exp.Alias)) 240 }, 241 **{ 242 expr_type: lambda self, e: self._annotate_binary(e) 243 for expr_type in subclasses(exp.__name__, exp.Binary) 244 }, 245 **{ 246 expr_type: _annotate_with_type_lambda(data_type) 247 for data_type, expressions in TYPE_TO_EXPRESSIONS.items() 248 for expr_type in expressions 249 }, 250 exp.Abs: lambda self, e: self._annotate_by_args(e, "this"), 251 exp.Anonymous: lambda self, e: self._annotate_with_type(e, exp.DataType.Type.UNKNOWN), 252 exp.Array: lambda self, e: self._annotate_by_args(e, "expressions", array=True), 253 exp.ArrayAgg: lambda self, e: self._annotate_by_args(e, "this", array=True), 254 exp.ArrayConcat: lambda self, e: self._annotate_by_args(e, "this", "expressions"), 255 exp.Bracket: lambda self, e: self._annotate_bracket(e), 256 exp.Cast: lambda self, e: self._annotate_with_type(e, e.args["to"]), 257 exp.Case: lambda self, e: self._annotate_by_args(e, "default", "ifs"), 258 exp.Coalesce: lambda self, e: self._annotate_by_args(e, "this", "expressions"), 259 exp.DataType: lambda self, e: self._annotate_with_type(e, e.copy()), 260 exp.DateAdd: lambda self, e: self._annotate_timeunit(e), 261 exp.DateSub: lambda self, e: self._annotate_timeunit(e), 262 exp.DateTrunc: lambda self, e: self._annotate_timeunit(e), 263 exp.Distinct: lambda self, e: self._annotate_by_args(e, "expressions"), 264 exp.Div: lambda self, e: self._annotate_div(e), 265 exp.Explode: lambda self, e: self._annotate_explode(e), 266 exp.Filter: lambda self, e: self._annotate_by_args(e, "this"), 267 exp.If: lambda self, e: self._annotate_by_args(e, "true", "false"), 268 exp.Interval: lambda self, e: self._annotate_with_type(e, exp.DataType.Type.INTERVAL), 269 exp.Least: lambda self, e: self._annotate_by_args(e, "expressions"), 270 exp.Literal: lambda self, e: self._annotate_literal(e), 271 exp.Map: lambda self, e: self._annotate_with_type(e, exp.DataType.Type.MAP), 272 exp.Max: lambda self, e: self._annotate_by_args(e, "this", "expressions"), 273 exp.Min: lambda self, e: self._annotate_by_args(e, "this", "expressions"), 274 exp.Null: lambda self, e: self._annotate_with_type(e, exp.DataType.Type.NULL), 275 exp.Nullif: lambda self, e: self._annotate_by_args(e, "this", "expression"), 276 exp.Slice: lambda self, e: self._annotate_with_type(e, exp.DataType.Type.UNKNOWN), 277 exp.Sum: lambda self, e: self._annotate_by_args(e, "this", "expressions", promote=True), 278 exp.Timestamp: lambda self, e: self._annotate_with_type( 279 e, 280 exp.DataType.Type.TIMESTAMPTZ if e.args.get("with_tz") else exp.DataType.Type.TIMESTAMP, 281 ), 282 exp.TryCast: lambda self, e: self._annotate_with_type(e, e.args["to"]), 283 exp.VarMap: lambda self, e: self._annotate_with_type(e, exp.DataType.Type.MAP), 284 exp.Struct: lambda self, e: self._annotate_by_args(e, "expressions", struct=True), 285 } 286 287 NESTED_TYPES = { 288 exp.DataType.Type.ARRAY, 289 } 290 291 # Specifies what types a given type can be coerced into (autofilled) 292 COERCES_TO: t.Dict[exp.DataType.Type, t.Set[exp.DataType.Type]] = {} 293 294 # Coercion functions for binary operations. 295 # Map of type pairs to a callable that takes both sides of the binary operation and returns the resulting type. 296 BINARY_COERCIONS: BinaryCoercions = { 297 **swap_all( 298 { 299 (t, exp.DataType.Type.INTERVAL): lambda l, r: _coerce_date_literal( 300 l, r.args.get("unit") 301 ) 302 for t in exp.DataType.TEXT_TYPES 303 } 304 ), 305 **swap_all( 306 { 307 # text + numeric will yield the numeric type to match most dialects' semantics 308 (text, numeric): lambda l, r: t.cast( 309 exp.DataType.Type, l.type if l.type in exp.DataType.NUMERIC_TYPES else r.type 310 ) 311 for text in exp.DataType.TEXT_TYPES 312 for numeric in exp.DataType.NUMERIC_TYPES 313 } 314 ), 315 **swap_all( 316 { 317 (exp.DataType.Type.DATE, exp.DataType.Type.INTERVAL): lambda l, r: _coerce_date( 318 l, r.args.get("unit") 319 ), 320 } 321 ), 322 } 323 324 def __init__( 325 self, 326 schema: Schema, 327 annotators: t.Optional[t.Dict[t.Type[E], t.Callable[[TypeAnnotator, E], E]]] = None, 328 coerces_to: t.Optional[t.Dict[exp.DataType.Type, t.Set[exp.DataType.Type]]] = None, 329 binary_coercions: t.Optional[BinaryCoercions] = None, 330 ) -> None: 331 self.schema = schema 332 self.annotators = annotators or self.ANNOTATORS 333 self.coerces_to = coerces_to or self.COERCES_TO 334 self.binary_coercions = binary_coercions or self.BINARY_COERCIONS 335 336 # Caches the ids of annotated sub-Expressions, to ensure we only visit them once 337 self._visited: t.Set[int] = set() 338 339 def _set_type( 340 self, expression: exp.Expression, target_type: t.Optional[exp.DataType | exp.DataType.Type] 341 ) -> None: 342 expression.type = target_type or exp.DataType.Type.UNKNOWN # type: ignore 343 self._visited.add(id(expression)) 344 345 def annotate(self, expression: E) -> E: 346 for scope in traverse_scope(expression): 347 selects = {} 348 for name, source in scope.sources.items(): 349 if not isinstance(source, Scope): 350 continue 351 if isinstance(source.expression, exp.UDTF): 352 values = [] 353 354 if isinstance(source.expression, exp.Lateral): 355 if isinstance(source.expression.this, exp.Explode): 356 values = [source.expression.this.this] 357 else: 358 values = source.expression.expressions[0].expressions 359 360 if not values: 361 continue 362 363 selects[name] = { 364 alias: column 365 for alias, column in zip( 366 source.expression.alias_column_names, 367 values, 368 ) 369 } 370 else: 371 selects[name] = { 372 select.alias_or_name: select for select in source.expression.selects 373 } 374 375 # First annotate the current scope's column references 376 for col in scope.columns: 377 if not col.table: 378 continue 379 380 source = scope.sources.get(col.table) 381 if isinstance(source, exp.Table): 382 self._set_type(col, self.schema.get_column_type(source, col)) 383 elif source and col.table in selects and col.name in selects[col.table]: 384 self._set_type(col, selects[col.table][col.name].type) 385 386 # Then (possibly) annotate the remaining expressions in the scope 387 self._maybe_annotate(scope.expression) 388 389 return self._maybe_annotate(expression) # This takes care of non-traversable expressions 390 391 def _maybe_annotate(self, expression: E) -> E: 392 if id(expression) in self._visited: 393 return expression # We've already inferred the expression's type 394 395 annotator = self.annotators.get(expression.__class__) 396 397 return ( 398 annotator(self, expression) 399 if annotator 400 else self._annotate_with_type(expression, exp.DataType.Type.UNKNOWN) 401 ) 402 403 def _annotate_args(self, expression: E) -> E: 404 for _, value in expression.iter_expressions(): 405 self._maybe_annotate(value) 406 407 return expression 408 409 def _maybe_coerce( 410 self, type1: exp.DataType | exp.DataType.Type, type2: exp.DataType | exp.DataType.Type 411 ) -> exp.DataType | exp.DataType.Type: 412 type1_value = type1.this if isinstance(type1, exp.DataType) else type1 413 type2_value = type2.this if isinstance(type2, exp.DataType) else type2 414 415 # We propagate the NULL / UNKNOWN types upwards if found 416 if exp.DataType.Type.NULL in (type1_value, type2_value): 417 return exp.DataType.Type.NULL 418 if exp.DataType.Type.UNKNOWN in (type1_value, type2_value): 419 return exp.DataType.Type.UNKNOWN 420 421 if type1_value in self.NESTED_TYPES: 422 return type1 423 if type2_value in self.NESTED_TYPES: 424 return type2 425 426 return type2_value if type2_value in self.coerces_to.get(type1_value, {}) else type1_value # type: ignore 427 428 # Note: the following "no_type_check" decorators were added because mypy was yelling due 429 # to assigning Type values to expression.type (since its getter returns Optional[DataType]). 430 # This is a known mypy issue: https://github.com/python/mypy/issues/3004 431 432 @t.no_type_check 433 def _annotate_binary(self, expression: B) -> B: 434 self._annotate_args(expression) 435 436 left, right = expression.left, expression.right 437 left_type, right_type = left.type.this, right.type.this 438 439 if isinstance(expression, exp.Connector): 440 if left_type == exp.DataType.Type.NULL and right_type == exp.DataType.Type.NULL: 441 self._set_type(expression, exp.DataType.Type.NULL) 442 elif exp.DataType.Type.NULL in (left_type, right_type): 443 self._set_type( 444 expression, 445 exp.DataType.build("NULLABLE", expressions=exp.DataType.build("BOOLEAN")), 446 ) 447 else: 448 self._set_type(expression, exp.DataType.Type.BOOLEAN) 449 elif isinstance(expression, exp.Predicate): 450 self._set_type(expression, exp.DataType.Type.BOOLEAN) 451 elif (left_type, right_type) in self.binary_coercions: 452 self._set_type(expression, self.binary_coercions[(left_type, right_type)](left, right)) 453 else: 454 self._set_type(expression, self._maybe_coerce(left_type, right_type)) 455 456 return expression 457 458 @t.no_type_check 459 def _annotate_unary(self, expression: E) -> E: 460 self._annotate_args(expression) 461 462 if isinstance(expression, exp.Condition) and not isinstance(expression, exp.Paren): 463 self._set_type(expression, exp.DataType.Type.BOOLEAN) 464 else: 465 self._set_type(expression, expression.this.type) 466 467 return expression 468 469 @t.no_type_check 470 def _annotate_literal(self, expression: exp.Literal) -> exp.Literal: 471 if expression.is_string: 472 self._set_type(expression, exp.DataType.Type.VARCHAR) 473 elif expression.is_int: 474 self._set_type(expression, exp.DataType.Type.INT) 475 else: 476 self._set_type(expression, exp.DataType.Type.DOUBLE) 477 478 return expression 479 480 @t.no_type_check 481 def _annotate_with_type(self, expression: E, target_type: exp.DataType.Type) -> E: 482 self._set_type(expression, target_type) 483 return self._annotate_args(expression) 484 485 @t.no_type_check 486 def _annotate_struct_value( 487 self, expression: exp.Expression 488 ) -> t.Optional[exp.DataType] | exp.ColumnDef: 489 alias = expression.args.get("alias") 490 if alias: 491 return exp.ColumnDef(this=alias.copy(), kind=expression.type) 492 493 # Case: key = value or key := value 494 if expression.expression: 495 return exp.ColumnDef(this=expression.this.copy(), kind=expression.expression.type) 496 497 return expression.type 498 499 @t.no_type_check 500 def _annotate_by_args( 501 self, 502 expression: E, 503 *args: str, 504 promote: bool = False, 505 array: bool = False, 506 struct: bool = False, 507 ) -> E: 508 self._annotate_args(expression) 509 510 expressions: t.List[exp.Expression] = [] 511 for arg in args: 512 arg_expr = expression.args.get(arg) 513 expressions.extend(expr for expr in ensure_list(arg_expr) if expr) 514 515 last_datatype = None 516 for expr in expressions: 517 expr_type = expr.type 518 519 # Stop at the first nested data type found - we don't want to _maybe_coerce nested types 520 if expr_type.args.get("nested"): 521 last_datatype = expr_type 522 break 523 524 last_datatype = self._maybe_coerce(last_datatype or expr_type, expr_type) 525 526 self._set_type(expression, last_datatype or exp.DataType.Type.UNKNOWN) 527 528 if promote: 529 if expression.type.this in exp.DataType.INTEGER_TYPES: 530 self._set_type(expression, exp.DataType.Type.BIGINT) 531 elif expression.type.this in exp.DataType.FLOAT_TYPES: 532 self._set_type(expression, exp.DataType.Type.DOUBLE) 533 534 if array: 535 self._set_type( 536 expression, 537 exp.DataType( 538 this=exp.DataType.Type.ARRAY, expressions=[expression.type], nested=True 539 ), 540 ) 541 542 if struct: 543 self._set_type( 544 expression, 545 exp.DataType( 546 this=exp.DataType.Type.STRUCT, 547 expressions=[self._annotate_struct_value(expr) for expr in expressions], 548 nested=True, 549 ), 550 ) 551 552 return expression 553 554 def _annotate_timeunit( 555 self, expression: exp.TimeUnit | exp.DateTrunc 556 ) -> exp.TimeUnit | exp.DateTrunc: 557 self._annotate_args(expression) 558 559 if expression.this.type.this in exp.DataType.TEXT_TYPES: 560 datatype = _coerce_date_literal(expression.this, expression.unit) 561 elif expression.this.type.this in exp.DataType.TEMPORAL_TYPES: 562 datatype = _coerce_date(expression.this, expression.unit) 563 else: 564 datatype = exp.DataType.Type.UNKNOWN 565 566 self._set_type(expression, datatype) 567 return expression 568 569 def _annotate_bracket(self, expression: exp.Bracket) -> exp.Bracket: 570 self._annotate_args(expression) 571 572 bracket_arg = expression.expressions[0] 573 this = expression.this 574 575 if isinstance(bracket_arg, exp.Slice): 576 self._set_type(expression, this.type) 577 elif this.type.is_type(exp.DataType.Type.ARRAY): 578 self._set_type(expression, seq_get(this.type.expressions, 0)) 579 elif isinstance(this, (exp.Map, exp.VarMap)) and bracket_arg in this.keys: 580 index = this.keys.index(bracket_arg) 581 value = seq_get(this.values, index) 582 self._set_type(expression, value.type if value else None) 583 else: 584 self._set_type(expression, exp.DataType.Type.UNKNOWN) 585 586 return expression 587 588 def _annotate_div(self, expression: exp.Div) -> exp.Div: 589 self._annotate_args(expression) 590 591 left_type, right_type = expression.left.type.this, expression.right.type.this # type: ignore 592 593 if ( 594 expression.args.get("typed") 595 and left_type in exp.DataType.INTEGER_TYPES 596 and right_type in exp.DataType.INTEGER_TYPES 597 ): 598 self._set_type(expression, exp.DataType.Type.BIGINT) 599 else: 600 self._set_type(expression, self._maybe_coerce(left_type, right_type)) 601 602 return expression 603 604 def _annotate_explode(self, expression: exp.Explode) -> exp.Explode: 605 self._annotate_args(expression) 606 self._set_type(expression, seq_get(expression.this.type.expressions, 0)) 607 return expression
def
annotate_types( expression: ~E, schema: Union[Dict, sqlglot.schema.Schema, NoneType] = None, annotators: Optional[Dict[Type[~E], Callable[[TypeAnnotator, ~E], ~E]]] = None, coerces_to: Optional[Dict[sqlglot.expressions.DataType.Type, Set[sqlglot.expressions.DataType.Type]]] = None) -> ~E:
29def annotate_types( 30 expression: E, 31 schema: t.Optional[t.Dict | Schema] = None, 32 annotators: t.Optional[t.Dict[t.Type[E], t.Callable[[TypeAnnotator, E], E]]] = None, 33 coerces_to: t.Optional[t.Dict[exp.DataType.Type, t.Set[exp.DataType.Type]]] = None, 34) -> E: 35 """ 36 Infers the types of an expression, annotating its AST accordingly. 37 38 Example: 39 >>> import sqlglot 40 >>> schema = {"y": {"cola": "SMALLINT"}} 41 >>> sql = "SELECT x.cola + 2.5 AS cola FROM (SELECT y.cola AS cola FROM y AS y) AS x" 42 >>> annotated_expr = annotate_types(sqlglot.parse_one(sql), schema=schema) 43 >>> annotated_expr.expressions[0].type.this # Get the type of "x.cola + 2.5 AS cola" 44 <Type.DOUBLE: 'DOUBLE'> 45 46 Args: 47 expression: Expression to annotate. 48 schema: Database schema. 49 annotators: Maps expression type to corresponding annotation function. 50 coerces_to: Maps expression type to set of types that it can be coerced into. 51 52 Returns: 53 The expression annotated with types. 54 """ 55 56 schema = ensure_schema(schema) 57 58 return TypeAnnotator(schema, annotators, coerces_to).annotate(expression)
Infers the types of an expression, annotating its AST accordingly.
Example:
>>> import sqlglot >>> schema = {"y": {"cola": "SMALLINT"}} >>> sql = "SELECT x.cola + 2.5 AS cola FROM (SELECT y.cola AS cola FROM y AS y) AS x" >>> annotated_expr = annotate_types(sqlglot.parse_one(sql), schema=schema) >>> annotated_expr.expressions[0].type.this # Get the type of "x.cola + 2.5 AS cola" <Type.DOUBLE: 'DOUBLE'>
Arguments:
- expression: Expression to annotate.
- schema: Database schema.
- annotators: Maps expression type to corresponding annotation function.
- coerces_to: Maps expression type to set of types that it can be coerced into.
Returns:
The expression annotated with types.
def
swap_args( func: Callable[[sqlglot.expressions.Expression, sqlglot.expressions.Expression], sqlglot.expressions.DataType.Type]) -> Callable[[sqlglot.expressions.Expression, sqlglot.expressions.Expression], sqlglot.expressions.DataType.Type]:
def
swap_all( coercions: Dict[Tuple[sqlglot.expressions.DataType.Type, sqlglot.expressions.DataType.Type], Callable[[sqlglot.expressions.Expression, sqlglot.expressions.Expression], sqlglot.expressions.DataType.Type]]) -> Dict[Tuple[sqlglot.expressions.DataType.Type, sqlglot.expressions.DataType.Type], Callable[[sqlglot.expressions.Expression, sqlglot.expressions.Expression], sqlglot.expressions.DataType.Type]]:
class
TypeAnnotator:
136class TypeAnnotator(metaclass=_TypeAnnotator): 137 TYPE_TO_EXPRESSIONS: t.Dict[exp.DataType.Type, t.Set[t.Type[exp.Expression]]] = { 138 exp.DataType.Type.BIGINT: { 139 exp.ApproxDistinct, 140 exp.ArraySize, 141 exp.Count, 142 exp.Length, 143 }, 144 exp.DataType.Type.BOOLEAN: { 145 exp.Between, 146 exp.Boolean, 147 exp.In, 148 exp.RegexpLike, 149 }, 150 exp.DataType.Type.DATE: { 151 exp.CurrentDate, 152 exp.Date, 153 exp.DateFromParts, 154 exp.DateStrToDate, 155 exp.DiToDate, 156 exp.StrToDate, 157 exp.TimeStrToDate, 158 exp.TsOrDsToDate, 159 }, 160 exp.DataType.Type.DATETIME: { 161 exp.CurrentDatetime, 162 exp.DatetimeAdd, 163 exp.DatetimeSub, 164 }, 165 exp.DataType.Type.DOUBLE: { 166 exp.ApproxQuantile, 167 exp.Avg, 168 exp.Div, 169 exp.Exp, 170 exp.Ln, 171 exp.Log, 172 exp.Log2, 173 exp.Log10, 174 exp.Pow, 175 exp.Quantile, 176 exp.Round, 177 exp.SafeDivide, 178 exp.Sqrt, 179 exp.Stddev, 180 exp.StddevPop, 181 exp.StddevSamp, 182 exp.Variance, 183 exp.VariancePop, 184 }, 185 exp.DataType.Type.INT: { 186 exp.Ceil, 187 exp.DatetimeDiff, 188 exp.DateDiff, 189 exp.Extract, 190 exp.TimestampDiff, 191 exp.TimeDiff, 192 exp.DateToDi, 193 exp.Floor, 194 exp.Levenshtein, 195 exp.StrPosition, 196 exp.TsOrDiToDi, 197 }, 198 exp.DataType.Type.JSON: { 199 exp.ParseJSON, 200 }, 201 exp.DataType.Type.TIMESTAMP: { 202 exp.CurrentTime, 203 exp.CurrentTimestamp, 204 exp.StrToTime, 205 exp.TimeAdd, 206 exp.TimeStrToTime, 207 exp.TimeSub, 208 exp.TimestampAdd, 209 exp.TimestampSub, 210 exp.UnixToTime, 211 }, 212 exp.DataType.Type.TINYINT: { 213 exp.Day, 214 exp.Month, 215 exp.Week, 216 exp.Year, 217 }, 218 exp.DataType.Type.VARCHAR: { 219 exp.ArrayConcat, 220 exp.Concat, 221 exp.ConcatWs, 222 exp.DateToDateStr, 223 exp.GroupConcat, 224 exp.Initcap, 225 exp.Lower, 226 exp.Substring, 227 exp.TimeToStr, 228 exp.TimeToTimeStr, 229 exp.Trim, 230 exp.TsOrDsToDateStr, 231 exp.UnixToStr, 232 exp.UnixToTimeStr, 233 exp.Upper, 234 }, 235 } 236 237 ANNOTATORS: t.Dict = { 238 **{ 239 expr_type: lambda self, e: self._annotate_unary(e) 240 for expr_type in subclasses(exp.__name__, (exp.Unary, exp.Alias)) 241 }, 242 **{ 243 expr_type: lambda self, e: self._annotate_binary(e) 244 for expr_type in subclasses(exp.__name__, exp.Binary) 245 }, 246 **{ 247 expr_type: _annotate_with_type_lambda(data_type) 248 for data_type, expressions in TYPE_TO_EXPRESSIONS.items() 249 for expr_type in expressions 250 }, 251 exp.Abs: lambda self, e: self._annotate_by_args(e, "this"), 252 exp.Anonymous: lambda self, e: self._annotate_with_type(e, exp.DataType.Type.UNKNOWN), 253 exp.Array: lambda self, e: self._annotate_by_args(e, "expressions", array=True), 254 exp.ArrayAgg: lambda self, e: self._annotate_by_args(e, "this", array=True), 255 exp.ArrayConcat: lambda self, e: self._annotate_by_args(e, "this", "expressions"), 256 exp.Bracket: lambda self, e: self._annotate_bracket(e), 257 exp.Cast: lambda self, e: self._annotate_with_type(e, e.args["to"]), 258 exp.Case: lambda self, e: self._annotate_by_args(e, "default", "ifs"), 259 exp.Coalesce: lambda self, e: self._annotate_by_args(e, "this", "expressions"), 260 exp.DataType: lambda self, e: self._annotate_with_type(e, e.copy()), 261 exp.DateAdd: lambda self, e: self._annotate_timeunit(e), 262 exp.DateSub: lambda self, e: self._annotate_timeunit(e), 263 exp.DateTrunc: lambda self, e: self._annotate_timeunit(e), 264 exp.Distinct: lambda self, e: self._annotate_by_args(e, "expressions"), 265 exp.Div: lambda self, e: self._annotate_div(e), 266 exp.Explode: lambda self, e: self._annotate_explode(e), 267 exp.Filter: lambda self, e: self._annotate_by_args(e, "this"), 268 exp.If: lambda self, e: self._annotate_by_args(e, "true", "false"), 269 exp.Interval: lambda self, e: self._annotate_with_type(e, exp.DataType.Type.INTERVAL), 270 exp.Least: lambda self, e: self._annotate_by_args(e, "expressions"), 271 exp.Literal: lambda self, e: self._annotate_literal(e), 272 exp.Map: lambda self, e: self._annotate_with_type(e, exp.DataType.Type.MAP), 273 exp.Max: lambda self, e: self._annotate_by_args(e, "this", "expressions"), 274 exp.Min: lambda self, e: self._annotate_by_args(e, "this", "expressions"), 275 exp.Null: lambda self, e: self._annotate_with_type(e, exp.DataType.Type.NULL), 276 exp.Nullif: lambda self, e: self._annotate_by_args(e, "this", "expression"), 277 exp.Slice: lambda self, e: self._annotate_with_type(e, exp.DataType.Type.UNKNOWN), 278 exp.Sum: lambda self, e: self._annotate_by_args(e, "this", "expressions", promote=True), 279 exp.Timestamp: lambda self, e: self._annotate_with_type( 280 e, 281 exp.DataType.Type.TIMESTAMPTZ if e.args.get("with_tz") else exp.DataType.Type.TIMESTAMP, 282 ), 283 exp.TryCast: lambda self, e: self._annotate_with_type(e, e.args["to"]), 284 exp.VarMap: lambda self, e: self._annotate_with_type(e, exp.DataType.Type.MAP), 285 exp.Struct: lambda self, e: self._annotate_by_args(e, "expressions", struct=True), 286 } 287 288 NESTED_TYPES = { 289 exp.DataType.Type.ARRAY, 290 } 291 292 # Specifies what types a given type can be coerced into (autofilled) 293 COERCES_TO: t.Dict[exp.DataType.Type, t.Set[exp.DataType.Type]] = {} 294 295 # Coercion functions for binary operations. 296 # Map of type pairs to a callable that takes both sides of the binary operation and returns the resulting type. 297 BINARY_COERCIONS: BinaryCoercions = { 298 **swap_all( 299 { 300 (t, exp.DataType.Type.INTERVAL): lambda l, r: _coerce_date_literal( 301 l, r.args.get("unit") 302 ) 303 for t in exp.DataType.TEXT_TYPES 304 } 305 ), 306 **swap_all( 307 { 308 # text + numeric will yield the numeric type to match most dialects' semantics 309 (text, numeric): lambda l, r: t.cast( 310 exp.DataType.Type, l.type if l.type in exp.DataType.NUMERIC_TYPES else r.type 311 ) 312 for text in exp.DataType.TEXT_TYPES 313 for numeric in exp.DataType.NUMERIC_TYPES 314 } 315 ), 316 **swap_all( 317 { 318 (exp.DataType.Type.DATE, exp.DataType.Type.INTERVAL): lambda l, r: _coerce_date( 319 l, r.args.get("unit") 320 ), 321 } 322 ), 323 } 324 325 def __init__( 326 self, 327 schema: Schema, 328 annotators: t.Optional[t.Dict[t.Type[E], t.Callable[[TypeAnnotator, E], E]]] = None, 329 coerces_to: t.Optional[t.Dict[exp.DataType.Type, t.Set[exp.DataType.Type]]] = None, 330 binary_coercions: t.Optional[BinaryCoercions] = None, 331 ) -> None: 332 self.schema = schema 333 self.annotators = annotators or self.ANNOTATORS 334 self.coerces_to = coerces_to or self.COERCES_TO 335 self.binary_coercions = binary_coercions or self.BINARY_COERCIONS 336 337 # Caches the ids of annotated sub-Expressions, to ensure we only visit them once 338 self._visited: t.Set[int] = set() 339 340 def _set_type( 341 self, expression: exp.Expression, target_type: t.Optional[exp.DataType | exp.DataType.Type] 342 ) -> None: 343 expression.type = target_type or exp.DataType.Type.UNKNOWN # type: ignore 344 self._visited.add(id(expression)) 345 346 def annotate(self, expression: E) -> E: 347 for scope in traverse_scope(expression): 348 selects = {} 349 for name, source in scope.sources.items(): 350 if not isinstance(source, Scope): 351 continue 352 if isinstance(source.expression, exp.UDTF): 353 values = [] 354 355 if isinstance(source.expression, exp.Lateral): 356 if isinstance(source.expression.this, exp.Explode): 357 values = [source.expression.this.this] 358 else: 359 values = source.expression.expressions[0].expressions 360 361 if not values: 362 continue 363 364 selects[name] = { 365 alias: column 366 for alias, column in zip( 367 source.expression.alias_column_names, 368 values, 369 ) 370 } 371 else: 372 selects[name] = { 373 select.alias_or_name: select for select in source.expression.selects 374 } 375 376 # First annotate the current scope's column references 377 for col in scope.columns: 378 if not col.table: 379 continue 380 381 source = scope.sources.get(col.table) 382 if isinstance(source, exp.Table): 383 self._set_type(col, self.schema.get_column_type(source, col)) 384 elif source and col.table in selects and col.name in selects[col.table]: 385 self._set_type(col, selects[col.table][col.name].type) 386 387 # Then (possibly) annotate the remaining expressions in the scope 388 self._maybe_annotate(scope.expression) 389 390 return self._maybe_annotate(expression) # This takes care of non-traversable expressions 391 392 def _maybe_annotate(self, expression: E) -> E: 393 if id(expression) in self._visited: 394 return expression # We've already inferred the expression's type 395 396 annotator = self.annotators.get(expression.__class__) 397 398 return ( 399 annotator(self, expression) 400 if annotator 401 else self._annotate_with_type(expression, exp.DataType.Type.UNKNOWN) 402 ) 403 404 def _annotate_args(self, expression: E) -> E: 405 for _, value in expression.iter_expressions(): 406 self._maybe_annotate(value) 407 408 return expression 409 410 def _maybe_coerce( 411 self, type1: exp.DataType | exp.DataType.Type, type2: exp.DataType | exp.DataType.Type 412 ) -> exp.DataType | exp.DataType.Type: 413 type1_value = type1.this if isinstance(type1, exp.DataType) else type1 414 type2_value = type2.this if isinstance(type2, exp.DataType) else type2 415 416 # We propagate the NULL / UNKNOWN types upwards if found 417 if exp.DataType.Type.NULL in (type1_value, type2_value): 418 return exp.DataType.Type.NULL 419 if exp.DataType.Type.UNKNOWN in (type1_value, type2_value): 420 return exp.DataType.Type.UNKNOWN 421 422 if type1_value in self.NESTED_TYPES: 423 return type1 424 if type2_value in self.NESTED_TYPES: 425 return type2 426 427 return type2_value if type2_value in self.coerces_to.get(type1_value, {}) else type1_value # type: ignore 428 429 # Note: the following "no_type_check" decorators were added because mypy was yelling due 430 # to assigning Type values to expression.type (since its getter returns Optional[DataType]). 431 # This is a known mypy issue: https://github.com/python/mypy/issues/3004 432 433 @t.no_type_check 434 def _annotate_binary(self, expression: B) -> B: 435 self._annotate_args(expression) 436 437 left, right = expression.left, expression.right 438 left_type, right_type = left.type.this, right.type.this 439 440 if isinstance(expression, exp.Connector): 441 if left_type == exp.DataType.Type.NULL and right_type == exp.DataType.Type.NULL: 442 self._set_type(expression, exp.DataType.Type.NULL) 443 elif exp.DataType.Type.NULL in (left_type, right_type): 444 self._set_type( 445 expression, 446 exp.DataType.build("NULLABLE", expressions=exp.DataType.build("BOOLEAN")), 447 ) 448 else: 449 self._set_type(expression, exp.DataType.Type.BOOLEAN) 450 elif isinstance(expression, exp.Predicate): 451 self._set_type(expression, exp.DataType.Type.BOOLEAN) 452 elif (left_type, right_type) in self.binary_coercions: 453 self._set_type(expression, self.binary_coercions[(left_type, right_type)](left, right)) 454 else: 455 self._set_type(expression, self._maybe_coerce(left_type, right_type)) 456 457 return expression 458 459 @t.no_type_check 460 def _annotate_unary(self, expression: E) -> E: 461 self._annotate_args(expression) 462 463 if isinstance(expression, exp.Condition) and not isinstance(expression, exp.Paren): 464 self._set_type(expression, exp.DataType.Type.BOOLEAN) 465 else: 466 self._set_type(expression, expression.this.type) 467 468 return expression 469 470 @t.no_type_check 471 def _annotate_literal(self, expression: exp.Literal) -> exp.Literal: 472 if expression.is_string: 473 self._set_type(expression, exp.DataType.Type.VARCHAR) 474 elif expression.is_int: 475 self._set_type(expression, exp.DataType.Type.INT) 476 else: 477 self._set_type(expression, exp.DataType.Type.DOUBLE) 478 479 return expression 480 481 @t.no_type_check 482 def _annotate_with_type(self, expression: E, target_type: exp.DataType.Type) -> E: 483 self._set_type(expression, target_type) 484 return self._annotate_args(expression) 485 486 @t.no_type_check 487 def _annotate_struct_value( 488 self, expression: exp.Expression 489 ) -> t.Optional[exp.DataType] | exp.ColumnDef: 490 alias = expression.args.get("alias") 491 if alias: 492 return exp.ColumnDef(this=alias.copy(), kind=expression.type) 493 494 # Case: key = value or key := value 495 if expression.expression: 496 return exp.ColumnDef(this=expression.this.copy(), kind=expression.expression.type) 497 498 return expression.type 499 500 @t.no_type_check 501 def _annotate_by_args( 502 self, 503 expression: E, 504 *args: str, 505 promote: bool = False, 506 array: bool = False, 507 struct: bool = False, 508 ) -> E: 509 self._annotate_args(expression) 510 511 expressions: t.List[exp.Expression] = [] 512 for arg in args: 513 arg_expr = expression.args.get(arg) 514 expressions.extend(expr for expr in ensure_list(arg_expr) if expr) 515 516 last_datatype = None 517 for expr in expressions: 518 expr_type = expr.type 519 520 # Stop at the first nested data type found - we don't want to _maybe_coerce nested types 521 if expr_type.args.get("nested"): 522 last_datatype = expr_type 523 break 524 525 last_datatype = self._maybe_coerce(last_datatype or expr_type, expr_type) 526 527 self._set_type(expression, last_datatype or exp.DataType.Type.UNKNOWN) 528 529 if promote: 530 if expression.type.this in exp.DataType.INTEGER_TYPES: 531 self._set_type(expression, exp.DataType.Type.BIGINT) 532 elif expression.type.this in exp.DataType.FLOAT_TYPES: 533 self._set_type(expression, exp.DataType.Type.DOUBLE) 534 535 if array: 536 self._set_type( 537 expression, 538 exp.DataType( 539 this=exp.DataType.Type.ARRAY, expressions=[expression.type], nested=True 540 ), 541 ) 542 543 if struct: 544 self._set_type( 545 expression, 546 exp.DataType( 547 this=exp.DataType.Type.STRUCT, 548 expressions=[self._annotate_struct_value(expr) for expr in expressions], 549 nested=True, 550 ), 551 ) 552 553 return expression 554 555 def _annotate_timeunit( 556 self, expression: exp.TimeUnit | exp.DateTrunc 557 ) -> exp.TimeUnit | exp.DateTrunc: 558 self._annotate_args(expression) 559 560 if expression.this.type.this in exp.DataType.TEXT_TYPES: 561 datatype = _coerce_date_literal(expression.this, expression.unit) 562 elif expression.this.type.this in exp.DataType.TEMPORAL_TYPES: 563 datatype = _coerce_date(expression.this, expression.unit) 564 else: 565 datatype = exp.DataType.Type.UNKNOWN 566 567 self._set_type(expression, datatype) 568 return expression 569 570 def _annotate_bracket(self, expression: exp.Bracket) -> exp.Bracket: 571 self._annotate_args(expression) 572 573 bracket_arg = expression.expressions[0] 574 this = expression.this 575 576 if isinstance(bracket_arg, exp.Slice): 577 self._set_type(expression, this.type) 578 elif this.type.is_type(exp.DataType.Type.ARRAY): 579 self._set_type(expression, seq_get(this.type.expressions, 0)) 580 elif isinstance(this, (exp.Map, exp.VarMap)) and bracket_arg in this.keys: 581 index = this.keys.index(bracket_arg) 582 value = seq_get(this.values, index) 583 self._set_type(expression, value.type if value else None) 584 else: 585 self._set_type(expression, exp.DataType.Type.UNKNOWN) 586 587 return expression 588 589 def _annotate_div(self, expression: exp.Div) -> exp.Div: 590 self._annotate_args(expression) 591 592 left_type, right_type = expression.left.type.this, expression.right.type.this # type: ignore 593 594 if ( 595 expression.args.get("typed") 596 and left_type in exp.DataType.INTEGER_TYPES 597 and right_type in exp.DataType.INTEGER_TYPES 598 ): 599 self._set_type(expression, exp.DataType.Type.BIGINT) 600 else: 601 self._set_type(expression, self._maybe_coerce(left_type, right_type)) 602 603 return expression 604 605 def _annotate_explode(self, expression: exp.Explode) -> exp.Explode: 606 self._annotate_args(expression) 607 self._set_type(expression, seq_get(expression.this.type.expressions, 0)) 608 return expression
TypeAnnotator( schema: sqlglot.schema.Schema, annotators: Optional[Dict[Type[~E], Callable[[TypeAnnotator, ~E], ~E]]] = None, coerces_to: Optional[Dict[sqlglot.expressions.DataType.Type, Set[sqlglot.expressions.DataType.Type]]] = None, binary_coercions: Optional[Dict[Tuple[sqlglot.expressions.DataType.Type, sqlglot.expressions.DataType.Type], Callable[[sqlglot.expressions.Expression, sqlglot.expressions.Expression], sqlglot.expressions.DataType.Type]]] = None)
325 def __init__( 326 self, 327 schema: Schema, 328 annotators: t.Optional[t.Dict[t.Type[E], t.Callable[[TypeAnnotator, E], E]]] = None, 329 coerces_to: t.Optional[t.Dict[exp.DataType.Type, t.Set[exp.DataType.Type]]] = None, 330 binary_coercions: t.Optional[BinaryCoercions] = None, 331 ) -> None: 332 self.schema = schema 333 self.annotators = annotators or self.ANNOTATORS 334 self.coerces_to = coerces_to or self.COERCES_TO 335 self.binary_coercions = binary_coercions or self.BINARY_COERCIONS 336 337 # Caches the ids of annotated sub-Expressions, to ensure we only visit them once 338 self._visited: t.Set[int] = set()
TYPE_TO_EXPRESSIONS: Dict[sqlglot.expressions.DataType.Type, Set[Type[sqlglot.expressions.Expression]]] =
{<Type.BIGINT: 'BIGINT'>: {<class 'sqlglot.expressions.Count'>, <class 'sqlglot.expressions.ArraySize'>, <class 'sqlglot.expressions.ApproxDistinct'>, <class 'sqlglot.expressions.Length'>}, <Type.BOOLEAN: 'BOOLEAN'>: {<class 'sqlglot.expressions.RegexpLike'>, <class 'sqlglot.expressions.In'>, <class 'sqlglot.expressions.Boolean'>, <class 'sqlglot.expressions.Between'>}, <Type.DATE: 'DATE'>: {<class 'sqlglot.expressions.TimeStrToDate'>, <class 'sqlglot.expressions.DateStrToDate'>, <class 'sqlglot.expressions.TsOrDsToDate'>, <class 'sqlglot.expressions.StrToDate'>, <class 'sqlglot.expressions.DateFromParts'>, <class 'sqlglot.expressions.DiToDate'>, <class 'sqlglot.expressions.CurrentDate'>, <class 'sqlglot.expressions.Date'>}, <Type.DATETIME: 'DATETIME'>: {<class 'sqlglot.expressions.DatetimeAdd'>, <class 'sqlglot.expressions.CurrentDatetime'>, <class 'sqlglot.expressions.DatetimeSub'>}, <Type.DOUBLE: 'DOUBLE'>: {<class 'sqlglot.expressions.Div'>, <class 'sqlglot.expressions.ApproxQuantile'>, <class 'sqlglot.expressions.Sqrt'>, <class 'sqlglot.expressions.Exp'>, <class 'sqlglot.expressions.VariancePop'>, <class 'sqlglot.expressions.Quantile'>, <class 'sqlglot.expressions.Variance'>, <class 'sqlglot.expressions.SafeDivide'>, <class 'sqlglot.expressions.Stddev'>, <class 'sqlglot.expressions.StddevSamp'>, <class 'sqlglot.expressions.Log10'>, <class 'sqlglot.expressions.Pow'>, <class 'sqlglot.expressions.Round'>, <class 'sqlglot.expressions.StddevPop'>, <class 'sqlglot.expressions.Log2'>, <class 'sqlglot.expressions.Log'>, <class 'sqlglot.expressions.Avg'>, <class 'sqlglot.expressions.Ln'>}, <Type.INT: 'INT'>: {<class 'sqlglot.expressions.Levenshtein'>, <class 'sqlglot.expressions.TimestampDiff'>, <class 'sqlglot.expressions.DatetimeDiff'>, <class 'sqlglot.expressions.StrPosition'>, <class 'sqlglot.expressions.Ceil'>, <class 'sqlglot.expressions.Floor'>, <class 'sqlglot.expressions.Extract'>, <class 'sqlglot.expressions.TimeDiff'>, <class 'sqlglot.expressions.DateDiff'>, <class 'sqlglot.expressions.DateToDi'>, <class 'sqlglot.expressions.TsOrDiToDi'>}, <Type.JSON: 'JSON'>: {<class 'sqlglot.expressions.ParseJSON'>}, <Type.TIMESTAMP: 'TIMESTAMP'>: {<class 'sqlglot.expressions.StrToTime'>, <class 'sqlglot.expressions.TimestampSub'>, <class 'sqlglot.expressions.CurrentTimestamp'>, <class 'sqlglot.expressions.TimestampAdd'>, <class 'sqlglot.expressions.CurrentTime'>, <class 'sqlglot.expressions.UnixToTime'>, <class 'sqlglot.expressions.TimeSub'>, <class 'sqlglot.expressions.TimeAdd'>, <class 'sqlglot.expressions.TimeStrToTime'>}, <Type.TINYINT: 'TINYINT'>: {<class 'sqlglot.expressions.Week'>, <class 'sqlglot.expressions.Day'>, <class 'sqlglot.expressions.Year'>, <class 'sqlglot.expressions.Month'>}, <Type.VARCHAR: 'VARCHAR'>: {<class 'sqlglot.expressions.GroupConcat'>, <class 'sqlglot.expressions.DateToDateStr'>, <class 'sqlglot.expressions.Concat'>, <class 'sqlglot.expressions.ArrayConcat'>, <class 'sqlglot.expressions.ConcatWs'>, <class 'sqlglot.expressions.Lower'>, <class 'sqlglot.expressions.TimeToTimeStr'>, <class 'sqlglot.expressions.TsOrDsToDateStr'>, <class 'sqlglot.expressions.Upper'>, <class 'sqlglot.expressions.TimeToStr'>, <class 'sqlglot.expressions.UnixToStr'>, <class 'sqlglot.expressions.Initcap'>, <class 'sqlglot.expressions.UnixToTimeStr'>, <class 'sqlglot.expressions.Trim'>, <class 'sqlglot.expressions.Substring'>}}
ANNOTATORS: Dict =
{<class 'sqlglot.expressions.Alias'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.BitwiseNot'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Neg'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Not'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Paren'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.PivotAlias'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Unary'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Add'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.And'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.ArrayContained'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.ArrayContains'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.ArrayOverlaps'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Binary'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.BitwiseAnd'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.BitwiseLeftShift'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.BitwiseOr'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.BitwiseRightShift'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.BitwiseXor'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Collate'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Connector'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.DPipe'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Distance'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Div'>: <function TypeAnnotator.<lambda>>, <class 'sqlglot.expressions.Dot'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.EQ'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Escape'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.GT'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.GTE'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Glob'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.ILike'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.ILikeAny'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.IntDiv'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Is'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.JSONArrayContains'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.JSONBContains'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.JSONBExtract'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.JSONBExtractScalar'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.JSONExtract'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.JSONExtractScalar'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Kwarg'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.LT'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.LTE'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Like'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.LikeAny'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Mod'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Mul'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.NEQ'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.NullSafeEQ'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.NullSafeNEQ'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Operator'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Or'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Overlaps'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Pow'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.PropertyEQ'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.RegexpILike'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.RegexpLike'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.SimilarTo'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Slice'>: <function TypeAnnotator.<lambda>>, <class 'sqlglot.expressions.Sub'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Xor'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class 'sqlglot.expressions.Count'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.ArraySize'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.ApproxDistinct'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Length'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.In'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Boolean'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Between'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.TimeStrToDate'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.DateStrToDate'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.TsOrDsToDate'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.StrToDate'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.DateFromParts'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.DiToDate'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.CurrentDate'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Date'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.DatetimeAdd'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.CurrentDatetime'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.DatetimeSub'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.ApproxQuantile'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Sqrt'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Exp'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.VariancePop'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Quantile'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Variance'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.SafeDivide'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Stddev'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.StddevSamp'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Log10'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Round'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.StddevPop'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Log2'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Log'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Avg'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Ln'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Levenshtein'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.TimestampDiff'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.DatetimeDiff'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.StrPosition'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Ceil'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Floor'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Extract'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.TimeDiff'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.DateDiff'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.DateToDi'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.TsOrDiToDi'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.ParseJSON'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.StrToTime'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.TimestampSub'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.CurrentTimestamp'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.TimestampAdd'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.CurrentTime'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.UnixToTime'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.TimeSub'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.TimeAdd'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.TimeStrToTime'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Week'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Day'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Year'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Month'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.GroupConcat'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.DateToDateStr'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Concat'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.ArrayConcat'>: <function TypeAnnotator.<lambda>>, <class 'sqlglot.expressions.ConcatWs'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Lower'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.TimeToTimeStr'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.TsOrDsToDateStr'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Upper'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.TimeToStr'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.UnixToStr'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Initcap'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.UnixToTimeStr'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Trim'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Substring'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class 'sqlglot.expressions.Abs'>: <function TypeAnnotator.<lambda>>, <class 'sqlglot.expressions.Anonymous'>: <function TypeAnnotator.<lambda>>, <class 'sqlglot.expressions.Array'>: <function TypeAnnotator.<lambda>>, <class 'sqlglot.expressions.ArrayAgg'>: <function TypeAnnotator.<lambda>>, <class 'sqlglot.expressions.Bracket'>: <function TypeAnnotator.<lambda>>, <class 'sqlglot.expressions.Cast'>: <function TypeAnnotator.<lambda>>, <class 'sqlglot.expressions.Case'>: <function TypeAnnotator.<lambda>>, <class 'sqlglot.expressions.Coalesce'>: <function TypeAnnotator.<lambda>>, <class 'sqlglot.expressions.DataType'>: <function TypeAnnotator.<lambda>>, <class 'sqlglot.expressions.DateAdd'>: <function TypeAnnotator.<lambda>>, <class 'sqlglot.expressions.DateSub'>: <function TypeAnnotator.<lambda>>, <class 'sqlglot.expressions.DateTrunc'>: <function TypeAnnotator.<lambda>>, <class 'sqlglot.expressions.Distinct'>: <function TypeAnnotator.<lambda>>, <class 'sqlglot.expressions.Explode'>: <function TypeAnnotator.<lambda>>, <class 'sqlglot.expressions.Filter'>: <function TypeAnnotator.<lambda>>, <class 'sqlglot.expressions.If'>: <function TypeAnnotator.<lambda>>, <class 'sqlglot.expressions.Interval'>: <function TypeAnnotator.<lambda>>, <class 'sqlglot.expressions.Least'>: <function TypeAnnotator.<lambda>>, <class 'sqlglot.expressions.Literal'>: <function TypeAnnotator.<lambda>>, <class 'sqlglot.expressions.Map'>: <function TypeAnnotator.<lambda>>, <class 'sqlglot.expressions.Max'>: <function TypeAnnotator.<lambda>>, <class 'sqlglot.expressions.Min'>: <function TypeAnnotator.<lambda>>, <class 'sqlglot.expressions.Null'>: <function TypeAnnotator.<lambda>>, <class 'sqlglot.expressions.Nullif'>: <function TypeAnnotator.<lambda>>, <class 'sqlglot.expressions.Sum'>: <function TypeAnnotator.<lambda>>, <class 'sqlglot.expressions.Timestamp'>: <function TypeAnnotator.<lambda>>, <class 'sqlglot.expressions.TryCast'>: <function TypeAnnotator.<lambda>>, <class 'sqlglot.expressions.VarMap'>: <function TypeAnnotator.<lambda>>, <class 'sqlglot.expressions.Struct'>: <function TypeAnnotator.<lambda>>}
COERCES_TO: Dict[sqlglot.expressions.DataType.Type, Set[sqlglot.expressions.DataType.Type]] =
{<Type.TEXT: 'TEXT'>: set(), <Type.NVARCHAR: 'NVARCHAR'>: {<Type.TEXT: 'TEXT'>}, <Type.VARCHAR: 'VARCHAR'>: {<Type.TEXT: 'TEXT'>, <Type.NVARCHAR: 'NVARCHAR'>}, <Type.NCHAR: 'NCHAR'>: {<Type.VARCHAR: 'VARCHAR'>, <Type.TEXT: 'TEXT'>, <Type.NVARCHAR: 'NVARCHAR'>}, <Type.CHAR: 'CHAR'>: {<Type.VARCHAR: 'VARCHAR'>, <Type.TEXT: 'TEXT'>, <Type.NCHAR: 'NCHAR'>, <Type.NVARCHAR: 'NVARCHAR'>}, <Type.DOUBLE: 'DOUBLE'>: set(), <Type.FLOAT: 'FLOAT'>: {<Type.DOUBLE: 'DOUBLE'>}, <Type.DECIMAL: 'DECIMAL'>: {<Type.FLOAT: 'FLOAT'>, <Type.DOUBLE: 'DOUBLE'>}, <Type.BIGINT: 'BIGINT'>: {<Type.FLOAT: 'FLOAT'>, <Type.DECIMAL: 'DECIMAL'>, <Type.DOUBLE: 'DOUBLE'>}, <Type.INT: 'INT'>: {<Type.BIGINT: 'BIGINT'>, <Type.FLOAT: 'FLOAT'>, <Type.DECIMAL: 'DECIMAL'>, <Type.DOUBLE: 'DOUBLE'>}, <Type.SMALLINT: 'SMALLINT'>: {<Type.INT: 'INT'>, <Type.BIGINT: 'BIGINT'>, <Type.DOUBLE: 'DOUBLE'>, <Type.DECIMAL: 'DECIMAL'>, <Type.FLOAT: 'FLOAT'>}, <Type.TINYINT: 'TINYINT'>: {<Type.SMALLINT: 'SMALLINT'>, <Type.INT: 'INT'>, <Type.BIGINT: 'BIGINT'>, <Type.DOUBLE: 'DOUBLE'>, <Type.DECIMAL: 'DECIMAL'>, <Type.FLOAT: 'FLOAT'>}, <Type.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>: set(), <Type.TIMESTAMPTZ: 'TIMESTAMPTZ'>: {<Type.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>}, <Type.TIMESTAMP: 'TIMESTAMP'>: {<Type.TIMESTAMPTZ: 'TIMESTAMPTZ'>, <Type.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>}, <Type.DATETIME: 'DATETIME'>: {<Type.TIMESTAMPTZ: 'TIMESTAMPTZ'>, <Type.TIMESTAMP: 'TIMESTAMP'>, <Type.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>}, <Type.DATE: 'DATE'>: {<Type.TIMESTAMPTZ: 'TIMESTAMPTZ'>, <Type.TIMESTAMP: 'TIMESTAMP'>, <Type.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>, <Type.DATETIME: 'DATETIME'>}}
BINARY_COERCIONS: Dict[Tuple[sqlglot.expressions.DataType.Type, sqlglot.expressions.DataType.Type], Callable[[sqlglot.expressions.Expression, sqlglot.expressions.Expression], sqlglot.expressions.DataType.Type]] =
{(<Type.VARCHAR: 'VARCHAR'>, <Type.INTERVAL: 'INTERVAL'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.INTERVAL: 'INTERVAL'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.INTERVAL: 'INTERVAL'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TEXT: 'TEXT'>, <Type.INTERVAL: 'INTERVAL'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.INTERVAL: 'INTERVAL'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INTERVAL: 'INTERVAL'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INTERVAL: 'INTERVAL'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INTERVAL: 'INTERVAL'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INTERVAL: 'INTERVAL'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INTERVAL: 'INTERVAL'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.VARCHAR: 'VARCHAR'>, <Type.TINYINT: 'TINYINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.VARCHAR: 'VARCHAR'>, <Type.INT128: 'INT128'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.VARCHAR: 'VARCHAR'>, <Type.BIGINT: 'BIGINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.VARCHAR: 'VARCHAR'>, <Type.INT256: 'INT256'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.VARCHAR: 'VARCHAR'>, <Type.SMALLINT: 'SMALLINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.VARCHAR: 'VARCHAR'>, <Type.DOUBLE: 'DOUBLE'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.VARCHAR: 'VARCHAR'>, <Type.BIT: 'BIT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.VARCHAR: 'VARCHAR'>, <Type.INT: 'INT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.VARCHAR: 'VARCHAR'>, <Type.FLOAT: 'FLOAT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.TINYINT: 'TINYINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.INT128: 'INT128'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.BIGINT: 'BIGINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.INT256: 'INT256'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.SMALLINT: 'SMALLINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.DOUBLE: 'DOUBLE'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.BIT: 'BIT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.INT: 'INT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NVARCHAR: 'NVARCHAR'>, <Type.FLOAT: 'FLOAT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.TINYINT: 'TINYINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.INT128: 'INT128'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.BIGINT: 'BIGINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.INT256: 'INT256'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.SMALLINT: 'SMALLINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.DOUBLE: 'DOUBLE'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.BIT: 'BIT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.INT: 'INT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.CHAR: 'CHAR'>, <Type.FLOAT: 'FLOAT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TEXT: 'TEXT'>, <Type.TINYINT: 'TINYINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TEXT: 'TEXT'>, <Type.INT128: 'INT128'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TEXT: 'TEXT'>, <Type.BIGINT: 'BIGINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TEXT: 'TEXT'>, <Type.INT256: 'INT256'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TEXT: 'TEXT'>, <Type.SMALLINT: 'SMALLINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TEXT: 'TEXT'>, <Type.DOUBLE: 'DOUBLE'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TEXT: 'TEXT'>, <Type.BIT: 'BIT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TEXT: 'TEXT'>, <Type.INT: 'INT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TEXT: 'TEXT'>, <Type.FLOAT: 'FLOAT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.TINYINT: 'TINYINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.INT128: 'INT128'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.BIGINT: 'BIGINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.INT256: 'INT256'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.SMALLINT: 'SMALLINT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.DOUBLE: 'DOUBLE'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.BIT: 'BIT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.INT: 'INT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.NCHAR: 'NCHAR'>, <Type.FLOAT: 'FLOAT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TINYINT: 'TINYINT'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INT128: 'INT128'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.BIGINT: 'BIGINT'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INT256: 'INT256'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.SMALLINT: 'SMALLINT'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DOUBLE: 'DOUBLE'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.BIT: 'BIT'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INT: 'INT'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.FLOAT: 'FLOAT'>, <Type.VARCHAR: 'VARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TINYINT: 'TINYINT'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INT128: 'INT128'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.BIGINT: 'BIGINT'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INT256: 'INT256'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.SMALLINT: 'SMALLINT'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DOUBLE: 'DOUBLE'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.BIT: 'BIT'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INT: 'INT'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.FLOAT: 'FLOAT'>, <Type.NVARCHAR: 'NVARCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TINYINT: 'TINYINT'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INT128: 'INT128'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.BIGINT: 'BIGINT'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INT256: 'INT256'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.SMALLINT: 'SMALLINT'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DOUBLE: 'DOUBLE'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.BIT: 'BIT'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INT: 'INT'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.FLOAT: 'FLOAT'>, <Type.CHAR: 'CHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TINYINT: 'TINYINT'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INT128: 'INT128'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.BIGINT: 'BIGINT'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INT256: 'INT256'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.SMALLINT: 'SMALLINT'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DOUBLE: 'DOUBLE'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.BIT: 'BIT'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INT: 'INT'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.FLOAT: 'FLOAT'>, <Type.TEXT: 'TEXT'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.TINYINT: 'TINYINT'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INT128: 'INT128'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.BIGINT: 'BIGINT'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INT256: 'INT256'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.SMALLINT: 'SMALLINT'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DOUBLE: 'DOUBLE'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.BIT: 'BIT'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.INT: 'INT'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.FLOAT: 'FLOAT'>, <Type.NCHAR: 'NCHAR'>): <function TypeAnnotator.<dictcomp>.<lambda>>, (<Type.DATE: 'DATE'>, <Type.INTERVAL: 'INTERVAL'>): <function TypeAnnotator.<lambda>>, (<Type.INTERVAL: 'INTERVAL'>, <Type.DATE: 'DATE'>): <function TypeAnnotator.<lambda>>}
def
annotate(self, expression: ~E) -> ~E:
346 def annotate(self, expression: E) -> E: 347 for scope in traverse_scope(expression): 348 selects = {} 349 for name, source in scope.sources.items(): 350 if not isinstance(source, Scope): 351 continue 352 if isinstance(source.expression, exp.UDTF): 353 values = [] 354 355 if isinstance(source.expression, exp.Lateral): 356 if isinstance(source.expression.this, exp.Explode): 357 values = [source.expression.this.this] 358 else: 359 values = source.expression.expressions[0].expressions 360 361 if not values: 362 continue 363 364 selects[name] = { 365 alias: column 366 for alias, column in zip( 367 source.expression.alias_column_names, 368 values, 369 ) 370 } 371 else: 372 selects[name] = { 373 select.alias_or_name: select for select in source.expression.selects 374 } 375 376 # First annotate the current scope's column references 377 for col in scope.columns: 378 if not col.table: 379 continue 380 381 source = scope.sources.get(col.table) 382 if isinstance(source, exp.Table): 383 self._set_type(col, self.schema.get_column_type(source, col)) 384 elif source and col.table in selects and col.name in selects[col.table]: 385 self._set_type(col, selects[col.table][col.name].type) 386 387 # Then (possibly) annotate the remaining expressions in the scope 388 self._maybe_annotate(scope.expression) 389 390 return self._maybe_annotate(expression) # This takes care of non-traversable expressions