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/*------------------------------------------------------------------------- * * parsetree.h * Routines to access various components and subcomponents of * parse trees. * * * Portions Copyright (c) 1996-2016, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * * src/include/parser/parsetree.h * *------------------------------------------------------------------------- */ #ifndef PARSETREE_H #define PARSETREE_H #include "nodes/parsenodes.h" /* ---------------- * range table operations * ---------------- */ /* * rt_fetch * * NB: this will crash and burn if handed an out-of-range RT index */ #define rt_fetch(rangetable_index, rangetable) \ ((RangeTblEntry *) list_nth(rangetable, (rangetable_index)-1)) /* * getrelid * * Given the range index of a relation, return the corresponding * relation OID. Note that InvalidOid will be returned if the * RTE is for a non-relation-type RTE. */ #define getrelid(rangeindex,rangetable) \ (rt_fetch(rangeindex, rangetable)->relid) /* * Given an RTE and an attribute number, return the appropriate * variable name or alias for that attribute of that RTE. */ extern char *get_rte_attribute_name(RangeTblEntry *rte, AttrNumber attnum); /* * Given an RTE and an attribute number, return the appropriate * type and typemod info for that attribute of that RTE. */ extern void get_rte_attribute_type(RangeTblEntry *rte, AttrNumber attnum, Oid *vartype, int32 *vartypmod, Oid *varcollid); /* * Check whether an attribute of an RTE has been dropped (note that * get_rte_attribute_type will fail on such an attr) */ extern bool get_rte_attribute_is_dropped(RangeTblEntry *rte, AttrNumber attnum); /* ---------------- * target list operations * ---------------- */ extern TargetEntry *get_tle_by_resno(List *tlist, AttrNumber resno); /* ---------------- * FOR UPDATE/SHARE info * ---------------- */ extern RowMarkClause *get_parse_rowmark(Query *qry, Index rtindex); #endif /* PARSETREE_H */