/*------------------------------------------------------------------------- * * parsetree.h * Routines to access various components and subcomponents of * parse trees. * * * Portions Copyright (c) 1996-2023, 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)) /* * 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); /* * Check whether an attribute of an RTE has been dropped */ 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 */