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View File Name : subselect.h

/*-------------------------------------------------------------------------
 *
 * subselect.h
 *
 * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * src/include/optimizer/subselect.h
 *
 *-------------------------------------------------------------------------
 */
#ifndef SUBSELECT_H
#define SUBSELECT_H

#include "nodes/plannodes.h"
#include "nodes/relation.h"

extern void SS_process_ctes(PlannerInfo *root);
extern JoinExpr *convert_ANY_sublink_to_join(PlannerInfo *root,
							SubLink *sublink,
							Relids available_rels);
extern JoinExpr *convert_EXISTS_sublink_to_join(PlannerInfo *root,
							   SubLink *sublink,
							   bool under_not,
							   Relids available_rels);
extern Node *SS_replace_correlation_vars(PlannerInfo *root, Node *expr);
extern Node *SS_process_sublinks(PlannerInfo *root, Node *expr, bool isQual);
extern void SS_finalize_plan(PlannerInfo *root, Plan *plan,
				 bool attach_initplans);
extern Param *SS_make_initplan_from_plan(PlannerInfo *root, Plan *plan,
					Oid resulttype, int32 resulttypmod, Oid resultcollation);
extern Param *assign_nestloop_param_var(PlannerInfo *root, Var *var);
extern Param *assign_nestloop_param_placeholdervar(PlannerInfo *root,
									 PlaceHolderVar *phv);
extern int	SS_assign_special_param(PlannerInfo *root);

#endif   /* SUBSELECT_H */