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/*------------------------------------------------------------------------- * * placeholder.h * prototypes for optimizer/util/placeholder.c. * * * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * * src/include/optimizer/placeholder.h * *------------------------------------------------------------------------- */ #ifndef PLACEHOLDER_H #define PLACEHOLDER_H #include "nodes/relation.h" extern PlaceHolderVar *make_placeholder_expr(PlannerInfo *root, Expr *expr, Relids phrels); extern PlaceHolderInfo *find_placeholder_info(PlannerInfo *root, PlaceHolderVar *phv, bool create_new_ph); extern void find_placeholders_in_jointree(PlannerInfo *root); extern void mark_placeholder_maybe_needed(PlannerInfo *root, PlaceHolderInfo *phinfo, Relids relids); extern void update_placeholder_eval_levels(PlannerInfo *root, SpecialJoinInfo *new_sjinfo); extern void fix_placeholder_input_needed_levels(PlannerInfo *root); extern void add_placeholders_to_base_rels(PlannerInfo *root); extern void add_placeholders_to_joinrel(PlannerInfo *root, RelOptInfo *joinrel); #endif /* PLACEHOLDER_H */