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6ee30209a6
This patch introduces the SQL standard IS JSON predicate. It operates on text and bytea values representing JSON, as well as on the json and jsonb types. Each test has IS and IS NOT variants and supports a WITH UNIQUE KEYS flag. The tests are: IS JSON [VALUE] IS JSON ARRAY IS JSON OBJECT IS JSON SCALAR These should be self-explanatory. The WITH UNIQUE KEYS flag makes these return false when duplicate keys exist in any object within the value, not necessarily directly contained in the outermost object. Author: Nikita Glukhov <n.gluhov@postgrespro.ru> Author: Teodor Sigaev <teodor@sigaev.ru> Author: Oleg Bartunov <obartunov@gmail.com> Author: Alexander Korotkov <aekorotkov@gmail.com> Author: Amit Langote <amitlangote09@gmail.com> Author: Andrew Dunstan <andrew@dunslane.net> Reviewers have included (in no particular order) Andres Freund, Alexander Korotkov, Pavel Stehule, Andrew Alsup, Erik Rijkers, Zihong Yu, Himanshu Upadhyaya, Daniel Gustafsson, Justin Pryzby. Discussion: https://postgr.es/m/CAF4Au4w2x-5LTnN_bxky-mq4=WOqsGsxSpENCzHRAzSnEd8+WQ@mail.gmail.com Discussion: https://postgr.es/m/cd0bb935-0158-78a7-08b5-904886deac4b@postgrespro.ru Discussion: https://postgr.es/m/20220616233130.rparivafipt6doj3@alap3.anarazel.de Discussion: https://postgr.es/m/abd9b83b-aa66-f230-3d6d-734817f0995d%40postgresql.org
121 lines
3.9 KiB
C
121 lines
3.9 KiB
C
/*-------------------------------------------------------------------------
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*
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* makefuncs.h
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* prototypes for the creator functions of various nodes
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*
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*
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* Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* src/include/nodes/makefuncs.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef MAKEFUNC_H
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#define MAKEFUNC_H
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#include "nodes/execnodes.h"
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#include "nodes/parsenodes.h"
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extern A_Expr *makeA_Expr(A_Expr_Kind kind, List *name,
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Node *lexpr, Node *rexpr, int location);
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extern A_Expr *makeSimpleA_Expr(A_Expr_Kind kind, char *name,
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Node *lexpr, Node *rexpr, int location);
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extern Var *makeVar(int varno,
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AttrNumber varattno,
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Oid vartype,
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int32 vartypmod,
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Oid varcollid,
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Index varlevelsup);
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extern Var *makeVarFromTargetEntry(int varno,
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TargetEntry *tle);
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extern Var *makeWholeRowVar(RangeTblEntry *rte,
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int varno,
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Index varlevelsup,
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bool allowScalar);
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extern TargetEntry *makeTargetEntry(Expr *expr,
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AttrNumber resno,
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char *resname,
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bool resjunk);
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extern TargetEntry *flatCopyTargetEntry(TargetEntry *src_tle);
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extern FromExpr *makeFromExpr(List *fromlist, Node *quals);
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extern Const *makeConst(Oid consttype,
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int32 consttypmod,
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Oid constcollid,
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int constlen,
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Datum constvalue,
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bool constisnull,
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bool constbyval);
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extern Const *makeNullConst(Oid consttype, int32 consttypmod, Oid constcollid);
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extern Node *makeBoolConst(bool value, bool isnull);
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extern Expr *makeBoolExpr(BoolExprType boolop, List *args, int location);
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extern Alias *makeAlias(const char *aliasname, List *colnames);
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extern RelabelType *makeRelabelType(Expr *arg, Oid rtype, int32 rtypmod,
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Oid rcollid, CoercionForm rformat);
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extern RangeVar *makeRangeVar(char *schemaname, char *relname, int location);
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extern TypeName *makeTypeName(char *typnam);
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extern TypeName *makeTypeNameFromNameList(List *names);
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extern TypeName *makeTypeNameFromOid(Oid typeOid, int32 typmod);
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extern ColumnDef *makeColumnDef(const char *colname,
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Oid typeOid, int32 typmod, Oid collOid);
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extern FuncExpr *makeFuncExpr(Oid funcid, Oid rettype, List *args,
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Oid funccollid, Oid inputcollid, CoercionForm fformat);
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extern FuncCall *makeFuncCall(List *name, List *args,
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CoercionForm funcformat, int location);
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extern Expr *make_opclause(Oid opno, Oid opresulttype, bool opretset,
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Expr *leftop, Expr *rightop,
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Oid opcollid, Oid inputcollid);
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extern Expr *make_andclause(List *andclauses);
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extern Expr *make_orclause(List *orclauses);
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extern Expr *make_notclause(Expr *notclause);
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extern Node *make_and_qual(Node *qual1, Node *qual2);
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extern Expr *make_ands_explicit(List *andclauses);
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extern List *make_ands_implicit(Expr *clause);
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extern IndexInfo *makeIndexInfo(int numattrs, int numkeyattrs, Oid amoid,
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List *expressions, List *predicates,
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bool unique, bool nulls_not_distinct,
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bool isready, bool concurrent,
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bool summarizing);
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extern DefElem *makeDefElem(char *name, Node *arg, int location);
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extern DefElem *makeDefElemExtended(char *nameSpace, char *name, Node *arg,
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DefElemAction defaction, int location);
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extern GroupingSet *makeGroupingSet(GroupingSetKind kind, List *content, int location);
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extern VacuumRelation *makeVacuumRelation(RangeVar *relation, Oid oid, List *va_cols);
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extern JsonFormat *makeJsonFormat(JsonFormatType type, JsonEncoding encoding,
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int location);
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extern JsonValueExpr *makeJsonValueExpr(Expr *expr, JsonFormat *format);
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extern Node *makeJsonKeyValue(Node *key, Node *value);
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extern Node *makeJsonIsPredicate(Node *expr, JsonFormat *format,
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JsonValueType item_type, bool unique_keys,
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int location);
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extern JsonEncoding makeJsonEncoding(char *name);
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#endif /* MAKEFUNC_H */
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