Loading...
Searching...
No Matches
parse_coerce.h File Reference
#include "parser/parse_node.h"
Include dependency graph for parse_coerce.h:
This graph shows which files directly or indirectly include this file:
Go to the source code of this file.
Typedefs | |
| typedef char | TYPCATEGORY |
| typedef enum CoercionPathType | CoercionPathType |
Enumerations | |
| enum | CoercionPathType { COERCION_PATH_NONE , COERCION_PATH_FUNC , COERCION_PATH_RELABELTYPE , COERCION_PATH_ARRAYCOERCE , COERCION_PATH_COERCEVIAIO } |
Typedef Documentation
◆ CoercionPathType
◆ TYPCATEGORY
Definition at line 21 of file parse_coerce.h.
Enumeration Type Documentation
◆ CoercionPathType
| Enumerator | |
|---|---|
| COERCION_PATH_NONE | |
| COERCION_PATH_FUNC | |
| COERCION_PATH_RELABELTYPE | |
| COERCION_PATH_ARRAYCOERCE | |
| COERCION_PATH_COERCEVIAIO | |
Definition at line 24 of file parse_coerce.h.
25{
31} CoercionPathType;
Function Documentation
◆ can_coerce_type()
|
extern |
Definition at line 558 of file parse_coerce.c.
560{
563
564 /* run through argument list... */
566 {
569 CoercionPathType pathtype;
571
572 /* no problem if same type */
574 continue;
575
576 /* accept if target is ANY */
578 continue;
579
580 /* accept if target is polymorphic, for now */
582 {
584 continue;
585 }
586
587 /*
588 * If input is an untyped string constant, assume we can convert it to
589 * anything.
590 */
592 continue;
593
594 /*
595 * If pg_cast shows that we can coerce, accept. This test now covers
596 * both binary-compatible and coercion-function cases.
597 */
599 &funcId);
601 continue;
602
603 /*
604 * If input is RECORD and target is a composite type, assume we can
605 * coerce (may need tighter checking here)
606 */
609 continue;
610
611 /*
612 * If input is a composite type and target is RECORD, accept
613 */
616 continue;
617
618#ifdef NOT_USED /* not implemented yet */
619
620 /*
621 * If input is record[] and target is a composite array type, assume
622 * we can coerce (may need tighter checking here)
623 */
626 continue;
627#endif
628
629 /*
630 * If input is a composite array type and target is record[], accept
631 */
634 continue;
635
636 /*
637 * If input is a class type that inherits from target, accept
638 */
641 continue;
642
643 /*
644 * Else, cannot coerce at this argument position
645 */
646 return false;
647 }
648
649 /* If we found any generic argument types, cross-check them */
651 {
653 nargs))
654 return false;
655 }
656
657 return true;
658}
static bool typeIsOfTypedTable(Oid reltypeId, Oid reloftypeId)
Definition parse_coerce.c:3384
bool check_generic_type_consistency(const Oid *actual_arg_types, const Oid *declared_arg_types, int nargs)
Definition parse_coerce.c:1737
CoercionPathType find_coercion_pathway(Oid targetTypeId, Oid sourceTypeId, CoercionContext ccontext, Oid *funcid)
Definition parse_coerce.c:3157
bool typeInheritsFrom(Oid subclassTypeId, Oid superclassTypeId)
Definition pg_inherits.c:407
References check_generic_type_consistency(), COERCION_PATH_NONE, fb(), find_coercion_pathway(), i, is_complex_array(), ISCOMPLEX, typeInheritsFrom(), and typeIsOfTypedTable().
Referenced by ATAddForeignKeyConstraint(), coerce_to_common_type(), coerce_to_target_type(), func_match_argtypes(), func_select_candidate(), jsonb_subscript_transform(), propgraph_edge_get_ref_keys(), select_common_type(), select_common_type_from_oids(), transformForPortionOfClause(), transformFrameOffset(), verify_common_type(), and verify_common_type_from_oids().
◆ check_generic_type_consistency()
|
extern |
Definition at line 1737 of file parse_coerce.c.
1740{
1755
1756 /*
1757 * Loop through the arguments to see if we have any that are polymorphic.
1758 * If so, require the actual types to be consistent.
1759 */
1762 {
1765
1769 {
1775 continue;
1777 return false;
1779 }
1781 {
1783 continue;
1786 return false;
1788 }
1790 {
1792 continue;
1795 return false;
1797 }
1799 {
1801 continue;
1804 return false;
1806 }
1809 {
1813 continue;
1814 /* collect the actual types of non-unknown COMPATIBLE args */
1816 }
1818 {
1820
1822 continue;
1826 return false; /* not an array */
1827 /* collect the element type for common-supertype choice */
1829 }
1831 {
1833 continue;
1836 {
1837 /* All ANYCOMPATIBLERANGE arguments must be the same type */
1839 return false;
1840 }
1841 else
1842 {
1846 return false; /* not a range type */
1847 /* collect the subtype for common-supertype choice */
1849 }
1850 }
1852 {
1854 continue;
1857 {
1858 /* All ANYCOMPATIBLEMULTIRANGE arguments must be the same type */
1860 return false;
1861 }
1862 else
1863 {
1867 return false; /* not a multirange type */
1868 /* we'll consider the subtype below */
1869 }
1870 }
1871 }
1872
1873 /* Get the element type based on the array type, if we have one */
1875 {
1877 {
1878 /*
1879 * Special case for matching ANYARRAY input to an ANYARRAY
1880 * argument: allow it for now. enforce_generic_type_consistency()
1881 * might complain later, depending on the presence of other
1882 * polymorphic arguments or results, but it will deliver a less
1883 * surprising error message than "function does not exist".
1884 *
1885 * (If you think to change this, note that can_coerce_type will
1886 * consider such a situation as a match, so that we might not even
1887 * get here.)
1888 */
1889 }
1890 else
1891 {
1893
1896 return false; /* should be an array, but isn't */
1897
1899 {
1900 /*
1901 * if we don't have an element type yet, use the one we just
1902 * got
1903 */
1905 }
1907 {
1908 /* otherwise, they better match */
1909 return false;
1910 }
1911 }
1912 }
1913
1914 /* Deduce range type from multirange type, or check that they agree */
1916 {
1918
1921 return false; /* should be a multirange, but isn't */
1922
1924 {
1925 /* If we don't have a range type yet, use the one we just got */
1929 return false; /* should be a range, but isn't */
1930 }
1932 {
1933 /* otherwise, they better match */
1934 return false;
1935 }
1936 }
1937
1938 /* Get the element type based on the range type, if we have one */
1940 {
1943 return false; /* should be a range, but isn't */
1944
1946 {
1947 /*
1948 * If we don't have an element type yet, use the one we just got
1949 */
1951 }
1953 {
1954 /* otherwise, they better match */
1955 return false;
1956 }
1957 }
1958
1960 {
1961 /* require the element type to not be an array or domain over array */
1963 return false;
1964 }
1965
1967 {
1968 /* require the element type to be an enum */
1970 return false;
1971 }
1972
1973 /* Deduce range type from multirange type, or check that they agree */
1975 {
1977 {
1980 return false;
1981 }
1982 else
1983 {
1987 return false; /* not a range type */
1988 /* collect the subtype for common-supertype choice */
1991 }
1992 }
1993
1994 /* Check matching of ANYCOMPATIBLE-family arguments, if any */
1996 {
1998
1999 anycompatible_typeid =
2002 true);
2003
2005 return false; /* there's definitely no common supertype */
2006
2007 /* We have to verify that the selected type actually works */
2009 n_anycompatible_args,
2010 anycompatible_actual_types))
2011 return false;
2012
2014 {
2015 /*
2016 * require the anycompatible type to not be an array or domain
2017 * over array
2018 */
2020 return false;
2021 }
2022
2023 /*
2024 * The anycompatible type must exactly match the range element type,
2025 * if we were able to identify one. This checks compatibility for
2026 * anycompatiblemultirange too since that also sets
2027 * anycompatible_range_typelem above.
2028 */
2031 return false;
2032 }
2033
2034 /* Looks valid */
2035 return true;
2036}
static bool verify_common_type_from_oids(Oid common_type, int nargs, const Oid *typeids)
Definition parse_coerce.c:1626
static Oid select_common_type_from_oids(int nargs, const Oid *typeids, bool noerror)
Definition parse_coerce.c:1478
References Assert, fb(), FUNC_MAX_ARGS, get_element_type(), get_multirange_range(), get_range_subtype(), getBaseType(), InvalidOid, j, OidIsValid, select_common_type_from_oids(), type_is_array_domain, type_is_enum(), and verify_common_type_from_oids().
Referenced by can_coerce_type().
◆ check_valid_internal_signature()
|
extern |
Definition at line 2952 of file parse_coerce.c.
2955{
2957 {
2959 {
2962 }
2964 }
2965 else
2967}
References _, fb(), i, and pstrdup().
Referenced by AggregateCreate(), and ProcedureCreate().
◆ check_valid_polymorphic_signature()
|
extern |
Definition at line 2875 of file parse_coerce.c.
2878{
2880 {
2881 /*
2882 * ANYRANGE and ANYMULTIRANGE require an ANYRANGE or ANYMULTIRANGE
2883 * input, else we can't tell which of several range types with the
2884 * same element type to use.
2885 */
2887 {
2891 }
2892 return psprintf(_("A result of type %s requires at least one input of type anyrange or anymultirange."),
2894 }
2896 {
2897 /*
2898 * ANYCOMPATIBLERANGE and ANYCOMPATIBLEMULTIRANGE require an
2899 * ANYCOMPATIBLERANGE or ANYCOMPATIBLEMULTIRANGE input, else we can't
2900 * tell which of several range types with the same element type to
2901 * use.
2902 */
2904 {
2908 }
2909 return psprintf(_("A result of type %s requires at least one input of type anycompatiblerange or anycompatiblemultirange."),
2911 }
2913 {
2914 /* Otherwise, any family-1 type can be deduced from any other */
2916 {
2919 }
2920 /* Keep this list in sync with IsPolymorphicTypeFamily1! */
2921 return psprintf(_("A result of type %s requires at least one input of type anyelement, anyarray, anynonarray, anyenum, anyrange, or anymultirange."),
2923 }
2925 {
2926 /* Otherwise, any family-2 type can be deduced from any other */
2928 {
2931 }
2932 /* Keep this list in sync with IsPolymorphicTypeFamily2! */
2933 return psprintf(_("A result of type %s requires at least one input of type anycompatible, anycompatiblearray, anycompatiblenonarray, anycompatiblerange, or anycompatiblemultirange."),
2935 }
2936 else
2938}
References _, fb(), format_type_be(), i, and psprintf().
Referenced by AggregateCreate(), and ProcedureCreate().
◆ coerce_null_to_domain()
|
extern |
Definition at line 1271 of file parse_coerce.c.
1273{
1277
1278 /*
1279 * The constant must appear to have the domain's base type/typmod, else
1280 * coerce_to_domain() will apply a length coercion which is useless.
1281 */
1284 baseTypeMod,
1285 collation,
1286 typlen,
1287 (Datum) 0,
1288 true, /* isnull */
1289 typbyval);
1293 typid,
1294 COERCION_IMPLICIT,
1295 COERCE_IMPLICIT_CAST,
1296 -1,
1297 false);
1299}
Const * makeConst(Oid consttype, int32 consttypmod, Oid constcollid, int constlen, Datum constvalue, bool constisnull, bool constbyval)
Definition makefuncs.c:350
Node * coerce_to_domain(Node *arg, Oid baseTypeId, int32 baseTypeMod, Oid typeId, CoercionContext ccontext, CoercionForm cformat, int location, bool hideInputCoercion)
Definition parse_coerce.c:676
Definition nodes.h:135
References COERCE_IMPLICIT_CAST, coerce_to_domain(), COERCION_IMPLICIT, fb(), getBaseTypeAndTypmod(), makeConst(), and result.
Referenced by expand_insert_targetlist(), ReplaceVarFromTargetList(), rewriteTargetListIU(), and rewriteValuesRTE().
◆ coerce_to_boolean()
|
extern |
Definition at line 1159 of file parse_coerce.c.
1161{
1163
1165 {
1167
1169 BOOLOID, -1,
1170 COERCION_ASSIGNMENT,
1171 COERCE_IMPLICIT_CAST,
1172 -1);
1176 /* translator: first %s is name of a SQL construct, eg WHERE */
1181 node = newnode;
1182 }
1183
1187 /* translator: %s is name of a SQL construct, eg WHERE */
1189 constructName),
1191
1192 return node;
1193}
Node * coerce_to_target_type(ParseState *pstate, Node *expr, Oid exprtype, Oid targettype, int32 targettypmod, CoercionContext ccontext, CoercionForm cformat, int location)
Definition parse_coerce.c:79
int parser_errposition(ParseState *pstate, int location)
Definition parse_node.c:106
References COERCE_IMPLICIT_CAST, coerce_to_target_type(), COERCION_ASSIGNMENT, ereport, errcode(), errmsg, ERROR, expression_returns_set(), exprLocation(), exprType(), fb(), format_type_be(), and parser_errposition().
Referenced by cookConstraint(), DoCopy(), domainAddCheckConstraint(), transformAExprIn(), transformBooleanTest(), transformBoolExpr(), transformCaseExpr(), transformJoinUsingClause(), transformWhereClause(), and transformXmlExpr().
◆ coerce_to_common_type()
|
extern |
Definition at line 1572 of file parse_coerce.c.
1574{
1576
1578 return node; /* no work */
1582 else
1585 /* translator: first %s is name of a SQL construct, eg CASE */
1587 context,
1591 return node;
1592}
Node * coerce_type(ParseState *pstate, Node *node, Oid inputTypeId, Oid targetTypeId, int32 targetTypeMod, CoercionContext ccontext, CoercionForm cformat, int location)
Definition parse_coerce.c:158
bool can_coerce_type(int nargs, const Oid *input_typeids, const Oid *target_typeids, CoercionContext ccontext)
Definition parse_coerce.c:558
References can_coerce_type(), COERCE_IMPLICIT_CAST, coerce_type(), COERCION_IMPLICIT, ereport, errcode(), errmsg, ERROR, exprLocation(), exprType(), fb(), format_type_be(), and parser_errposition().
Referenced by analyzeCTE(), constructSetOpTargetlist(), generate_setop_tlist(), transformAExprIn(), transformArrayExpr(), transformCaseExpr(), transformCoalesceExpr(), transformMinMaxExpr(), and transformValuesClause().
◆ coerce_to_domain()
|
extern |
Definition at line 676 of file parse_coerce.c.
679{
681
682 /* We now require the caller to supply correct baseTypeId/baseTypeMod */
684
685 /* If it isn't a domain, return the node as it was passed in */
688
689 /* Suppress display of nested coercion steps */
692
693 /*
694 * If the domain applies a typmod to its base type, build the appropriate
695 * coercion step. Mark it implicit for display purposes, because we don't
696 * want it shown separately by ruleutils.c; but the isExplicit flag passed
697 * to the conversion function depends on the manner in which the domain
698 * coercion is invoked, so that the semantics of implicit and explicit
699 * coercion differ. (Is that really the behavior we want?)
700 *
701 * NOTE: because we apply this as part of the fixed expression structure,
702 * ALTER DOMAIN cannot alter the typtypmod. But it's unclear that that
703 * would be safe to do anyway, without lots of knowledge about what the
704 * base type thinks the typmod means.
705 */
708 false);
709
710 /*
711 * Now build the domain coercion node. This represents run-time checking
712 * of any constraints currently attached to the domain. This also ensures
713 * that the expression is properly labeled as to result type.
714 */
717 result->resulttype = typeId;
719 /* resultcollid will be set by parse_collate.c */
721 result->location = location;
722
724}
static Node * coerce_type_typmod(Node *node, Oid targetTypeId, int32 targetTypMod, CoercionContext ccontext, CoercionForm cformat, int location, bool hideInputCoercion)
Definition parse_coerce.c:752
Definition primnodes.h:2066
Definition primnodes.h:190
References arg, Assert, COERCE_IMPLICIT_CAST, coerce_type_typmod(), fb(), hide_coercion_node(), makeNode, OidIsValid, and result.
Referenced by coerce_null_to_domain(), coerce_record_to_complex(), coerce_type(), and transformAssignmentIndirection().
◆ coerce_to_specific_type()
|
extern |
Definition at line 1255 of file parse_coerce.c.
1258{
1260 targetTypeId, -1,
1261 constructName);
1262}
Node * coerce_to_specific_type_typmod(ParseState *pstate, Node *node, Oid targetTypeId, int32 targetTypmod, const char *constructName)
Definition parse_coerce.c:1206
References coerce_to_specific_type_typmod(), and fb().
Referenced by coerceJsonFuncExpr(), interpret_function_parameter_list(), transformFrameOffset(), transformJsonScalarExpr(), transformJsonValueExpr(), transformLimitClause(), transformRangeTableFunc(), transformRangeTableSample(), transformXmlExpr(), and transformXmlSerialize().
◆ coerce_to_specific_type_typmod()
|
extern |
Definition at line 1206 of file parse_coerce.c.
1209{
1211
1213 {
1215
1218 COERCION_ASSIGNMENT,
1219 COERCE_IMPLICIT_CAST,
1220 -1);
1224 /* translator: first %s is name of a SQL construct, eg LIMIT */
1226 constructName,
1230 node = newnode;
1231 }
1232
1236 /* translator: %s is name of a SQL construct, eg LIMIT */
1238 constructName),
1240
1241 return node;
1242}
References COERCE_IMPLICIT_CAST, coerce_to_target_type(), COERCION_ASSIGNMENT, ereport, errcode(), errmsg, ERROR, expression_returns_set(), exprLocation(), exprType(), fb(), format_type_be(), and parser_errposition().
Referenced by coerce_to_specific_type(), and transformRangeTableFunc().
◆ coerce_to_target_type()
|
extern |
Definition at line 79 of file parse_coerce.c.
84{
87
90
91 /*
92 * If the input has a CollateExpr at the top, strip it off, perform the
93 * coercion, and put a new one back on. This is annoying since it
94 * duplicates logic in coerce_type, but if we don't do this then it's too
95 * hard to tell whether coerce_type actually changed anything, and we
96 * *must* know that to avoid possibly calling hide_coercion_node on
97 * something that wasn't generated by coerce_type. Note that if there are
98 * multiple stacked CollateExprs, we just discard all but the topmost.
99 * Also, if the target type isn't collatable, we discard the CollateExpr.
100 */
101 origexpr = expr;
104
106 targettype, targettypmod,
108
109 /*
110 * If the target is a fixed-length type, it may need a length coercion as
111 * well as a type coercion. If we find ourselves adding both, force the
112 * inner coercion node to implicit display form.
113 */
115 targettype, targettypmod,
118
120 {
121 /* Reinstall top CollateExpr */
124
129 }
130
132}
Definition primnodes.h:1312
Definition primnodes.h:325
References arg, can_coerce_type(), coerce_type(), coerce_type_typmod(), CollateExpr::collOid, fb(), IsA, CollateExpr::location, makeNode, result, and type_is_collatable().
Referenced by array_subscript_transform(), ATExecAddColumn(), ATExecAlterColumnType(), ATPrepAlterColumnType(), build_coercion_expression(), build_column_default(), coerce_fn_result_column(), coerce_record_to_complex(), coerce_to_boolean(), coerce_to_specific_type_typmod(), coerceJsonFuncExpr(), cookDefault(), EvaluateParams(), get_cast_hashentry(), hstore_subscript_transform(), transformArrayExpr(), transformAssignedExpr(), transformAssignmentIndirection(), transformAssignmentSubscripts(), transformJsonBehavior(), transformJsonFuncExpr(), transformJsonParseArg(), transformJsonValueExpr(), transformPartitionBoundValue(), transformPLAssignStmtTarget(), transformTypeCast(), and transformXmlSerialize().
◆ coerce_type()
|
extern |
Definition at line 158 of file parse_coerce.c.
161{
163 CoercionPathType pathtype;
165
167 node == NULL)
168 {
169 /* no conversion needed */
170 return node;
171 }
177 {
178 /*
179 * Assume can_coerce_type verified that implicit coercion is okay.
180 *
181 * Note: by returning the unmodified node here, we are saying that
182 * it's OK to treat an UNKNOWN constant as a valid input for a
183 * function accepting one of these pseudotypes. This should be all
184 * right, since an UNKNOWN value is still a perfectly valid Datum.
185 *
186 * NB: we do NOT want a RelabelType here: the exposed type of the
187 * function argument must be its actual type, not the polymorphic
188 * pseudotype.
189 */
190 return node;
191 }
199 {
200 /*
201 * Assume can_coerce_type verified that implicit coercion is okay.
202 *
203 * These cases are unlike the ones above because the exposed type of
204 * the argument must be an actual array, enum, range, or multirange
205 * type. In particular the argument must *not* be an UNKNOWN
206 * constant. If it is, we just fall through; below, we'll call the
207 * pseudotype's input function, which will produce an error. Also, if
208 * what we have is a domain over array, enum, range, or multirange, we
209 * have to relabel it to its base type.
210 *
211 * Note: currently, we can't actually see a domain-over-enum here,
212 * since the other functions in this file will not match such a
213 * parameter to ANYENUM. But that should get changed eventually.
214 */
216 {
218
220 {
222 baseTypeId, -1,
223 InvalidOid,
224 cformat);
225
226 r->location = location;
228 }
229 /* Not a domain type, so return it as-is */
230 return node;
231 }
232 }
234 {
235 /*
236 * Input is a string constant with previously undetermined type. Apply
237 * the target type's typinput function to it to produce a constant of
238 * the target type.
239 *
240 * NOTE: this case cannot be folded together with the other
241 * constant-input case, since the typinput function does not
242 * necessarily behave the same as a type conversion function. For
243 * example, int4's typinput function will reject "1.2", whereas
244 * float-to-int type conversion will round to integer.
245 *
246 * XXX if the typinput function is not immutable, we really ought to
247 * postpone evaluation of the function call until runtime. But there
248 * is no way to represent a typinput function call as an expression
249 * tree, because C-string values are not Datums. (XXX This *is*
250 * possible as of 7.3, do we want to do it?)
251 */
257 Type baseType;
259
260 /*
261 * If the target type is a domain, we want to call its base type's
262 * input routine, not domain_in(). This is to avoid premature failure
263 * when the domain applies a typmod: existing input routines follow
264 * implicit-coercion semantics for length checks, which is not always
265 * what we want here. The needed check will be applied properly
266 * inside coerce_to_domain().
267 */
270
271 /*
272 * For most types we pass typmod -1 to the input routine, because
273 * existing input routines follow implicit-coercion semantics for
274 * length checks, which is not always what we want here. Any length
275 * constraint will be applied later by our caller. An exception
276 * however is the INTERVAL type, for which we *must* pass the typmod
277 * or it won't be able to obey the bizarre SQL-spec input rules. (Ugly
278 * as sin, but so is this part of the spec...)
279 */
282 else
283 inputTypeMod = -1;
284
286
292 newcon->constisnull = con->constisnull;
293
294 /*
295 * We use the original literal's location regardless of the position
296 * of the coercion. This is a change from pre-9.2 behavior, meant to
297 * simplify life for pg_stat_statements.
298 */
299 newcon->location = con->location;
300
301 /*
302 * Set up to point at the constant's text if the input routine throws
303 * an error.
304 */
306
307 /*
308 * We assume here that UNKNOWN's internal representation is the same
309 * as CSTRING.
310 */
311 if (!con->constisnull)
313 DatumGetCString(con->constvalue),
314 inputTypeMod);
315 else
317 NULL,
318 inputTypeMod);
319
320 /*
321 * If it's a varlena value, force it to be in non-expanded
322 * (non-toasted) format; this avoids any possible dependency on
323 * external values and improves consistency of representation.
324 */
326 newcon->constvalue =
328
329#ifdef RANDOMIZE_ALLOCATED_MEMORY
330
331 /*
332 * For pass-by-reference data types, repeat the conversion to see if
333 * the input function leaves any uninitialized bytes in the result. We
334 * can only detect that reliably if RANDOMIZE_ALLOCATED_MEMORY is
335 * enabled, so we don't bother testing otherwise. The reason we don't
336 * want any instability in the input function is that comparison of
337 * Const nodes relies on bytewise comparison of the datums, so if the
338 * input function leaves garbage then subexpressions that should be
339 * identical may not get recognized as such. See pgsql-hackers
340 * discussion of 2008-04-04.
341 */
343 {
345
347 DatumGetCString(con->constvalue),
348 inputTypeMod);
354 }
355#endif
356
358
360
361 /* If target is a domain, apply constraints. */
365 targetTypeId,
367 false);
368
369 ReleaseSysCache(baseType);
370
372 }
375 {
376 /*
377 * Allow the CoerceParamHook to decide what happens. It can return a
378 * transformed node (very possibly the same Param node), or return
379 * NULL to indicate we should proceed with normal coercion.
380 */
382 (Param *) node,
383 targetTypeId,
384 targetTypeMod,
385 location);
388 }
390 {
391 /*
392 * If we have a COLLATE clause, we have to push the coercion
393 * underneath the COLLATE; or discard the COLLATE if the target type
394 * isn't collatable. This is really ugly, but there is little choice
395 * because the above hacks on Consts and Params wouldn't happen
396 * otherwise. This kluge has consequences in coerce_to_target_type.
397 */
399
404 {
406
411 }
413 }
415 &funcId);
417 {
420
423
425 {
426 /*
427 * Generate an expression tree representing run-time application
428 * of the conversion function. If we are dealing with a domain
429 * target type, the conversion function will yield the base type,
430 * and we need to extract the correct typmod to use from the
431 * domain's typtypmod.
432 */
436
437 /*
438 * If domain, coerce to the domain type and relabel with domain
439 * type ID, hiding the previous coercion node.
440 */
443 targetTypeId,
445 true);
446 }
447 else
448 {
449 /*
450 * We don't need to do a physical conversion, but we do need to
451 * attach a RelabelType node so that the expression will be seen
452 * to have the intended type when inspected by higher-level code.
453 *
454 * Also, domains may have value restrictions beyond the base type
455 * that must be accounted for. If the destination is a domain
456 * then we won't need a RelabelType node.
457 */
459 targetTypeId,
461 false);
463 {
464 /*
465 * XXX could we label result with exprTypmod(node) instead of
466 * default -1 typmod, to save a possible length-coercion
467 * later? Would work if both types have same interpretation of
468 * typmod, which is likely but not certain.
469 */
471 targetTypeId, -1,
472 InvalidOid,
473 cformat);
474
475 r->location = location;
477 }
478 }
480 }
483 {
484 /* Coerce a RECORD to a specific complex type */
487 }
490 {
491 /* Coerce a specific complex type to RECORD */
492 /* NB: we do NOT want a RelabelType here */
493 return node;
494 }
495#ifdef NOT_USED
498 {
499 /* Coerce record[] to a specific complex array type */
500 /* not implemented yet ... */
501 }
502#endif
505 {
506 /* Coerce a specific complex array type to record[] */
507 /* NB: we do NOT want a RelabelType here */
508 return node;
509 }
512 {
513 /*
514 * Input class type is a subclass of target, so generate an
515 * appropriate runtime conversion (removing unneeded columns and
516 * possibly rearranging the ones that are wanted).
517 *
518 * We will also get here when the input is a domain over a subclass of
519 * the target type. To keep life simple for the executor, we define
520 * ConvertRowtypeExpr as only working between regular composite types;
521 * therefore, in such cases insert a RelabelType to smash the input
522 * expression down to its base type.
523 */
526
528 {
530 baseTypeId, -1,
531 InvalidOid,
532 COERCE_IMPLICIT_CAST);
533
534 rt->location = location;
536 }
539 r->convertformat = cformat;
540 r->location = location;
542 }
543 /* If we get here, caller blew it */
547}
bool datumIsEqual(Datum value1, Datum value2, bool typByVal, int typLen)
Definition datum.c:223
RelabelType * makeRelabelType(Expr *arg, Oid rtype, int32 rtypmod, Oid rcollid, CoercionForm rformat)
Definition makefuncs.c:453
static Node * coerce_record_to_complex(ParseState *pstate, Node *node, Oid targetTypeId, CoercionContext ccontext, CoercionForm cformat, int location)
Definition parse_coerce.c:1011
static Node * build_coercion_expression(Node *node, CoercionPathType pathtype, Oid funcId, Oid targetTypeId, int32 targetTypMod, CoercionContext ccontext, CoercionForm cformat, int location)
Definition parse_coerce.c:838
void cancel_parser_errposition_callback(ParseCallbackState *pcbstate)
Definition parse_node.c:156
void setup_parser_errposition_callback(ParseCallbackState *pcbstate, ParseState *pstate, int location)
Definition parse_node.c:140
Datum stringTypeDatum(Type tp, char *string, int32 atttypmod)
Definition parse_type.c:654
Definition primnodes.h:1294
Definition htup.h:63
Definition primnodes.h:392
Definition parse_node.h:363
Definition primnodes.h:1217
References ConvertRowtypeExpr::arg, CollateExpr::arg, build_coercion_expression(), cancel_parser_errposition_callback(), COERCE_IMPLICIT_CAST, coerce_record_to_complex(), coerce_to_domain(), coerce_type(), COERCION_PATH_NONE, COERCION_PATH_RELABELTYPE, CollateExpr::collOid, DatumGetCString(), datumIsEqual(), elog, ERROR, fb(), find_coercion_pathway(), format_type_be(), getBaseType(), getBaseTypeAndTypmod(), InvalidOid, is_complex_array(), IsA, ISCOMPLEX, RelabelType::location, ConvertRowtypeExpr::location, CollateExpr::location, makeNode, makeRelabelType(), ParseState::p_coerce_param_hook, PG_DETOAST_DATUM, PointerGetDatum, ReleaseSysCache(), result, ConvertRowtypeExpr::resulttype, setup_parser_errposition_callback(), stringTypeDatum(), type_is_collatable(), typeByVal(), typeidType(), typeInheritsFrom(), typeIsOfTypedTable(), typeLen(), typeTypeCollation(), typeTypeName(), and WARNING.
Referenced by addTargetToGroupList(), addTargetToSortList(), buildMergedJoinVar(), coerce_to_common_type(), coerce_to_target_type(), coerce_type(), jsonb_subscript_transform(), make_fn_arguments(), ParseFuncOrColumn(), resolveTargetListUnknowns(), transformArrayExpr(), transformForPortionOfClause(), and unify_hypothetical_args().
◆ enforce_generic_type_consistency()
|
extern |
Definition at line 2131 of file parse_coerce.c.
2136{
2159
2160 /*
2161 * Loop through the arguments to see if we have any that are polymorphic.
2162 * If so, require the actual types to be consistent.
2163 */
2166 {
2169
2173 {
2174 n_poly_args++;
2180 {
2182 continue;
2183 }
2185 continue; /* no new information here */
2194 }
2196 {
2197 n_poly_args++;
2199 {
2201 continue;
2202 }
2204 continue; /* no new information here */
2214 }
2216 {
2217 n_poly_args++;
2219 {
2221 continue;
2222 }
2224 continue; /* no new information here */
2234 }
2236 {
2237 n_poly_args++;
2240 {
2242 continue;
2243 }
2245 continue; /* no new information here */
2255 }
2258 {
2263 continue;
2265 continue; /* no new information here */
2266 /* collect the actual types of non-unknown COMPATIBLE args */
2268 }
2270 {
2272
2276 continue;
2278 continue; /* no new information here */
2285 "anycompatiblearray",
2287 /* collect the element type for common-supertype choice */
2289 }
2291 {
2295 continue;
2297 continue; /* no new information here */
2300 {
2301 /* All ANYCOMPATIBLERANGE arguments must be the same type */
2309 }
2310 else
2311 {
2318 "anycompatiblerange",
2320 /* collect the subtype for common-supertype choice */
2322 }
2323 }
2325 {
2329 continue;
2331 continue; /* no new information here */
2334 {
2335 /* All ANYCOMPATIBLEMULTIRANGE arguments must be the same type */
2343 }
2344 else
2345 {
2352 "anycompatiblemultirange",
2354 /* we'll consider the subtype below */
2355 }
2356 }
2357 }
2358
2359 /*
2360 * Fast Track: if none of the arguments are polymorphic, return the
2361 * unmodified rettype. Not our job to resolve it if it's polymorphic.
2362 */
2364 return rettype;
2365
2366 /* Check matching of family-1 polymorphic arguments, if any */
2368 {
2369 /* Get the element type based on the array type, if we have one */
2371 {
2373
2375 {
2376 /*
2377 * Special case for matching ANYARRAY input to an ANYARRAY
2378 * argument: allow it iff no other arguments are family-1
2379 * polymorphics (otherwise we couldn't be sure whether the
2380 * array element type matches up) and the result type doesn't
2381 * require us to infer a specific element type.
2382 */
2384 (rettype != ANYARRAYOID &&
2385 IsPolymorphicTypeFamily1(rettype)))
2390 }
2391 else
2392 {
2399 }
2400
2402 {
2403 /*
2404 * if we don't have an element type yet, use the one we just
2405 * got
2406 */
2408 }
2410 {
2411 /* otherwise, they better match */
2415 "anyarray", "anyelement"),
2419 }
2420 }
2421
2422 /* Deduce range type from multirange type, or vice versa */
2424 {
2426
2432 "anymultirange",
2434
2436 {
2437 /* if we don't have a range type yet, use the one we just got */
2439 }
2441 {
2442 /* otherwise, they better match */
2446 "anymultirange", "anyrange"),
2450 }
2451 }
2453 {
2455 /* We'll complain below if that didn't work */
2456 }
2457
2458 /* Get the element type based on the range type, if we have one */
2460 {
2462
2468 "anyrange",
2470
2472 {
2473 /*
2474 * if we don't have an element type yet, use the one we just
2475 * got
2476 */
2478 }
2480 {
2481 /* otherwise, they better match */
2485 "anyrange", "anyelement"),
2489 }
2490 }
2491
2493 {
2495 {
2500 }
2501 else
2502 {
2503 /*
2504 * Only way to get here is if all the family-1 polymorphic
2505 * arguments have UNKNOWN inputs.
2506 */
2510 "unknown")));
2511 }
2512 }
2513
2515 {
2516 /*
2517 * require the element type to not be an array or domain over
2518 * array
2519 */
2525 }
2526
2528 {
2529 /* require the element type to be an enum */
2535 }
2536 }
2537
2538 /* Check matching of family-2 polymorphic arguments, if any */
2540 {
2541 /* Deduce range type from multirange type, or vice versa */
2543 {
2545 {
2551 "anycompatiblemultirange",
2552 "anycompatiblerange"),
2556 }
2557 else
2558 {
2565 "anycompatiblemultirange",
2567 /* this enables element type matching check below */
2569 /* collect the subtype for common-supertype choice */
2572 }
2573 }
2576 {
2578 /* We'll complain below if that didn't work */
2579 }
2580
2582 {
2583 anycompatible_typeid =
2586 false);
2587
2588 /* We have to verify that the selected type actually works */
2590 n_anycompatible_args,
2591 anycompatible_actual_types))
2595
2597 {
2604 }
2605
2607 {
2608 /* we can't infer a range type from the others */
2613 "anycompatiblerange", "unknown")));
2614
2615 /*
2616 * the anycompatible type must exactly match the range element
2617 * type
2618 */
2625 }
2626
2628 {
2629 /* we can't infer a multirange type from the others */
2634 "anycompatiblemultirange", "unknown")));
2635
2636 /*
2637 * the anycompatible type must exactly match the multirange
2638 * element type
2639 */
2646 }
2647
2649 {
2650 /*
2651 * require the element type to not be an array or domain over
2652 * array
2653 */
2659 }
2660 }
2661 else
2662 {
2664 {
2669 }
2670 else
2671 {
2672 /*
2673 * Only way to get here is if all the family-2 polymorphic
2674 * arguments have UNKNOWN inputs. Resolve to TEXT as
2675 * select_common_type() would do. That doesn't license us to
2676 * use TEXTRANGE or TEXTMULTIRANGE, though.
2677 */
2684 "anycompatiblerange", "unknown")));
2689 "anycompatiblemultirange", "unknown")));
2690 }
2691 }
2692
2693 /* replace family-2 polymorphic types by selected types */
2695 {
2697
2707 }
2708 }
2709
2710 /*
2711 * If we had any UNKNOWN inputs for family-1 polymorphic arguments,
2712 * re-scan to assign correct types to them.
2713 *
2714 * Note: we don't have to consider unknown inputs that were matched to
2715 * family-2 polymorphic arguments, because we forcibly updated their
2716 * declared_arg_types[] positions just above.
2717 */
2719 {
2721 {
2724
2726 continue;
2727
2733 {
2735 {
2742 }
2744 }
2746 {
2748 {
2749 /* we can't infer a range type from the others */
2753 "anyrange", "unknown")));
2754 }
2756 }
2758 {
2760 {
2761 /* we can't infer a multirange type from the others */
2765 "anymultirange", "unknown")));
2766 }
2768 }
2769 }
2770 }
2771
2772 /* if we return ANYELEMENT use the appropriate argument type */
2774 rettype == ANYNONARRAYOID ||
2775 rettype == ANYENUMOID)
2777
2778 /* if we return ANYARRAY use the appropriate argument type */
2780 {
2782 {
2789 }
2791 }
2792
2793 /* if we return ANYRANGE use the appropriate argument type */
2795 {
2796 /* this error is unreachable if the function signature is valid: */
2801 "anyrange", "unknown")));
2803 }
2804
2805 /* if we return ANYMULTIRANGE use the appropriate argument type */
2807 {
2808 /* this error is unreachable if the function signature is valid: */
2813 "anymultirange", "unknown")));
2815 }
2816
2817 /* if we return ANYCOMPATIBLE use the appropriate type */
2819 rettype == ANYCOMPATIBLENONARRAYOID)
2820 {
2821 /* this error is unreachable if the function signature is valid: */
2827 }
2828
2829 /* if we return ANYCOMPATIBLEARRAY use the appropriate type */
2831 {
2832 /* this error is unreachable if the function signature is valid: */
2838 }
2839
2840 /* if we return ANYCOMPATIBLERANGE use the appropriate argument type */
2842 {
2843 /* this error is unreachable if the function signature is valid: */
2849 }
2850
2851 /* if we return ANYCOMPATIBLEMULTIRANGE use the appropriate argument type */
2853 {
2854 /* this error is unreachable if the function signature is valid: */
2860 }
2861
2862 /* we don't return a generic type; send back the original return type */
2863 return rettype;
2864}
int errdetail(const char *fmt,...) pg_attribute_printf(1
int int errmsg_internal(const char *fmt,...) pg_attribute_printf(1
References Assert, ereport, errcode(), errdetail(), errmsg, errmsg_internal(), ERROR, fb(), format_type_be(), FUNC_MAX_ARGS, get_array_type(), get_element_type(), get_multirange_range(), get_range_multirange(), get_range_subtype(), getBaseType(), InvalidOid, j, OidIsValid, select_common_type_from_oids(), type_is_array_domain, type_is_enum(), and verify_common_type_from_oids().
Referenced by lookup_agg_function(), make_op(), make_scalar_array_op(), ParseFuncOrColumn(), recheck_cast_function_args(), and resolve_aggregate_transtype().
◆ find_coercion_pathway()
|
extern |
Definition at line 3157 of file parse_coerce.c.
3160{
3162 HeapTuple tuple;
3163
3164 *funcid = InvalidOid;
3165
3166 /* Perhaps the types are domains; if so, look at their base types */
3171
3172 /* Domains are always coercible to and from their base type */
3175
3176 /* Look in pg_cast */
3180
3182 {
3184 CoercionContext castcontext;
3185
3186 /* convert char value for castcontext to CoercionContext enum */
3188 {
3190 castcontext = COERCION_IMPLICIT;
3191 break;
3193 castcontext = COERCION_ASSIGNMENT;
3194 break;
3196 castcontext = COERCION_EXPLICIT;
3197 break;
3198 default:
3201 castcontext = 0; /* keep compiler quiet */
3202 break;
3203 }
3204
3205 /* Rely on ordering of enum for correct behavior here */
3207 {
3209 {
3212 *funcid = castForm->castfunc;
3213 break;
3216 break;
3219 break;
3220 default:
3223 break;
3224 }
3225 }
3226
3227 ReleaseSysCache(tuple);
3228 }
3229 else
3230 {
3231 /*
3232 * If there's no pg_cast entry, perhaps we are dealing with a pair of
3233 * array types. If so, and if their element types have a conversion
3234 * pathway, report that we can coerce with an ArrayCoerceExpr.
3235 *
3236 * Hack: disallow coercions to oidvector and int2vector, which
3237 * otherwise tend to capture coercions that should go to "real" array
3238 * types. We want those types to be considered "real" arrays for many
3239 * purposes, but not this one. (Also, ArrayCoerceExpr isn't
3240 * guaranteed to produce an output that meets the restrictions of
3241 * these datatypes, such as being 1-dimensional.)
3242 */
3244 {
3247
3250 {
3253
3255 sourceElem,
3256 ccontext,
3257 &elemfuncid);
3259 {
3261 }
3262 }
3263 }
3264
3265 /*
3266 * If we still haven't found a possibility, consider automatic casting
3267 * using I/O functions. We allow assignment casts to string types and
3268 * explicit casts from string types to be handled this way. (The
3269 * CoerceViaIO mechanism is a lot more general than that, but this is
3270 * all we want to allow in the absence of a pg_cast entry.) It would
3271 * probably be better to insist on explicit casts in both directions,
3272 * but this is a compromise to preserve something of the pre-8.3
3273 * behavior that many types had implicit (yipes!) casts to text.
3274 */
3276 {
3283 }
3284 }
3285
3286 /*
3287 * When parsing PL/pgSQL assignments, allow an I/O cast to be used
3288 * whenever no normal coercion is available.
3289 */
3293
3295}
HeapTuple SearchSysCache2(SysCacheIdentifier cacheId, Datum key1, Datum key2)
Definition syscache.c:231
References COERCION_ASSIGNMENT, COERCION_EXPLICIT, COERCION_IMPLICIT, COERCION_PATH_ARRAYCOERCE, COERCION_PATH_COERCEVIAIO, COERCION_PATH_FUNC, COERCION_PATH_NONE, COERCION_PATH_RELABELTYPE, COERCION_PLPGSQL, elog, ERROR, fb(), find_coercion_pathway(), Form_pg_cast, get_element_type(), getBaseType(), GETSTRUCT(), HeapTupleIsValid, InvalidOid, ObjectIdGetDatum(), OidIsValid, ReleaseSysCache(), result, SearchSysCache2(), and TypeCategory().
Referenced by can_coerce_type(), coerce_type(), find_coercion_pathway(), findFkeyCast(), func_get_detail(), json_categorize_type(), and ri_HashCompareOp().
◆ find_typmod_coercion_function()
|
extern |
Definition at line 3320 of file parse_coerce.c.
3322{
3326 HeapTuple tuple;
3327
3328 *funcid = InvalidOid;
3330
3333
3334 /* Check for a "true" array type */
3336 {
3337 /* Yes, switch our attention to the element type */
3338 typeId = typeForm->typelem;
3340 }
3342
3343 /* Look in pg_cast */
3345 ObjectIdGetDatum(typeId),
3346 ObjectIdGetDatum(typeId));
3347
3349 {
3351
3352 *funcid = castForm->castfunc;
3353 ReleaseSysCache(tuple);
3354 }
3355
3358
3360}
References COERCION_PATH_ARRAYCOERCE, COERCION_PATH_FUNC, COERCION_PATH_NONE, fb(), Form_pg_cast, Form_pg_type, GETSTRUCT(), HeapTupleIsValid, InvalidOid, ObjectIdGetDatum(), OidIsValid, ReleaseSysCache(), result, SearchSysCache2(), and typeidType().
Referenced by coerce_type_typmod().
◆ IsBinaryCoercible()
Definition at line 3033 of file parse_coerce.c.
3034{
3036
3038}
bool IsBinaryCoercibleWithCast(Oid srctype, Oid targettype, Oid *castoid)
Definition parse_coerce.c:3049
References fb(), and IsBinaryCoercibleWithCast().
Referenced by AggregateCreate(), binary_coercible(), check_amproc_signature(), compatible_oper(), ExecInitAgg(), findRangeSubOpclass(), GetDefaultOpClass(), initialize_peragg(), lookup_agg_function(), ResolveOpClass(), ri_HashCompareOp(), satisfies_hash_partition(), spgGetCache(), ts_stat_sql(), tsvector_update_trigger(), and tupledesc_match().
◆ IsBinaryCoercibleWithCast()
Definition at line 3049 of file parse_coerce.c.
3051{
3052 HeapTuple tuple;
3055
3057
3058 /* Fast path if same type */
3059 if (srctype == targettype)
3060 return true;
3061
3062 /* Anything is coercible to ANY or ANYELEMENT or ANYCOMPATIBLE */
3064 targettype == ANYCOMPATIBLEOID)
3065 return true;
3066
3067 /* If srctype is a domain, reduce to its base type */
3069 srctype = getBaseType(srctype);
3070
3071 /* Somewhat-fast path for domain -> base type case */
3072 if (srctype == targettype)
3073 return true;
3074
3075 /* Also accept any array type as coercible to ANY[COMPATIBLE]ARRAY */
3078 return true;
3079
3080 /* Also accept any non-array type as coercible to ANY[COMPATIBLE]NONARRAY */
3083 return true;
3084
3085 /* Also accept any enum type as coercible to ANYENUM */
3088 return true;
3089
3090 /* Also accept any range type as coercible to ANY[COMPATIBLE]RANGE */
3093 return true;
3094
3095 /* Also, any multirange type is coercible to ANY[COMPATIBLE]MULTIRANGE */
3098 return true;
3099
3100 /* Also accept any composite type as coercible to RECORD */
3103 return true;
3104
3105 /* Also accept any composite array type as coercible to RECORD[] */
3108 return true;
3109
3110 /* Else look in pg_cast */
3112 ObjectIdGetDatum(srctype),
3113 ObjectIdGetDatum(targettype));
3115 return false; /* no cast */
3117
3120
3123
3124 ReleaseSysCache(tuple);
3125
3127}
References fb(), Form_pg_cast, getBaseType(), GETSTRUCT(), HeapTupleIsValid, InvalidOid, is_complex_array(), ISCOMPLEX, ObjectIdGetDatum(), OidIsValid, ReleaseSysCache(), result, SearchSysCache2(), type_is_array, type_is_enum(), type_is_multirange(), and type_is_range().
Referenced by CreateCast(), and IsBinaryCoercible().
◆ IsPreferredType()
|
extern |
Definition at line 2997 of file parse_coerce.c.
2998{
3001
3005 else
3006 return false;
3007}
void get_type_category_preferred(Oid typid, char *typcategory, bool *typispreferred)
Definition lsyscache.c:3018
References fb(), get_type_category_preferred(), and type.
Referenced by func_select_candidate(), and GetDefaultOpClass().
◆ parser_coercion_errposition()
|
extern |
Definition at line 1312 of file parse_coerce.c.
1315{
1318 else
1320}
References exprLocation(), fb(), and parser_errposition().
Referenced by coerce_record_to_complex(), coerceJsonFuncExpr(), and transformTypeCast().
◆ select_common_type()
|
extern |
Definition at line 1342 of file parse_coerce.c.
1344{
1346 Oid ptype;
1350
1355
1356 /*
1357 * If all input types are valid and exactly the same, just pick that type.
1358 * This is the only way that we will resolve the result as being a domain
1359 * type; otherwise domains are smashed to their base types for comparison.
1360 */
1362 {
1364 {
1367
1369 break;
1370 }
1372 {
1375 return ptype;
1376 }
1377 }
1378
1379 /*
1380 * Nope, so set up for the full algorithm. Note that at this point, lc
1381 * points to the first list item with type different from pexpr's; we need
1382 * not re-examine any items the previous loop advanced over.
1383 */
1384 ptype = getBaseType(ptype);
1386
1388 {
1391
1392 /* move on to next one if no new information... */
1394 {
1397
1400 {
1401 /* so far, only unknowns so take anything... */
1403 ptype = ntype;
1406 }
1408 {
1409 /*
1410 * both types in different categories? then not much hope...
1411 */
1416 /*------
1417 translator: first %s is name of a SQL construct, eg CASE */
1419 context,
1420 format_type_be(ptype),
1423 }
1427 {
1428 /*
1429 * take new type if can coerce to it implicitly but not the
1430 * other way; but if we have a preferred type, stay on it.
1431 */
1433 ptype = ntype;
1436 }
1437 }
1438 }
1439
1440 /*
1441 * If all the inputs were UNKNOWN type --- ie, unknown-type literals ---
1442 * then resolve as type TEXT. This situation comes up with constructs
1443 * like SELECT (CASE WHEN foo THEN 'bar' ELSE 'baz' END); SELECT 'foo'
1444 * UNION SELECT 'bar'; It might seem desirable to leave the construct's
1445 * output type as UNKNOWN, but that really doesn't work, because we'd
1446 * probably end up needing a runtime coercion from UNKNOWN to something
1447 * else, and we usually won't have it. We need to coerce the unknown
1448 * literals while they are still literals, so a decision has to be made
1449 * now.
1450 */
1452 ptype = TEXTOID;
1453
1456 return ptype;
1457}
Definition pg_list.h:46
References Assert, can_coerce_type(), COERCION_IMPLICIT, ereport, errcode(), errmsg, ERROR, exprLocation(), exprType(), fb(), for_each_cell, format_type_be(), get_type_category_preferred(), getBaseType(), InvalidOid, lfirst, linitial, list_second_cell(), NIL, and parser_errposition().
Referenced by analyzeCTE(), buildMergedJoinVar(), constructSetOpTargetlist(), transformAExprIn(), transformArrayExpr(), transformCaseExpr(), transformCoalesceExpr(), transformMinMaxExpr(), transformValuesClause(), and unify_hypothetical_args().
◆ select_common_typmod()
|
extern |
Definition at line 1644 of file parse_coerce.c.
1645{
1647 bool first = true;
1649
1651 {
1653
1654 /* Types must match */
1656 return -1;
1657 else if (first)
1658 {
1660 first = false;
1661 }
1662 else
1663 {
1664 /* As soon as we see a non-matching typmod, fall back to -1 */
1666 return -1;
1667 }
1668 }
1669
1671}
References exprType(), exprTypmod(), fb(), lfirst, and result.
Referenced by analyzeCTE(), buildMergedJoinVar(), constructSetOpTargetlist(), transformValuesClause(), and unify_hypothetical_args().
◆ TypeCategory()
|
extern |
Definition at line 2977 of file parse_coerce.c.
2978{
2981
2985}
References Assert, fb(), get_type_category_preferred(), and type.
Referenced by find_coercion_pathway(), func_get_detail(), func_select_candidate(), GetDefaultOpClass(), and transformJsonBehavior().
◆ verify_common_type()
Definition at line 1606 of file parse_coerce.c.
1607{
1609
1611 {
1614
1616 return false;
1617 }
1618 return true;
1619}
References can_coerce_type(), COERCION_IMPLICIT, exprType(), fb(), and lfirst.
Referenced by transformAExprIn().
