PAL.C.T MINI SHELL
/*-------------------------------------------------------------------------
*
* placeholder.h
* prototypes for optimizer/util/placeholder.c.
*
*
* Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/optimizer/placeholder.h,v 1.3 2009/06/11 14:49:11 momjian Exp $
*
*-------------------------------------------------------------------------
*/
#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_joinrel(PlannerInfo *root,
RelOptInfo *joinrel);
#endif /* PLACEHOLDER_H */
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