paramassign.h

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/*-------------------------------------------------------------------------
 *
 * paramassign.h
 *      Functions for assigning PARAM_EXEC slots during planning.
 *
 * Portions Copyright (c) 1996-2026, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * src/include/optimizer/paramassign.h
 *
 *-------------------------------------------------------------------------
 */
#ifndef PARAMASSIGN_H
#define PARAMASSIGN_H
 
#include "nodes/pathnodes.h"
 
extern Param *replace_outer_var(PlannerInfo *root, Var *var);
extern Param *replace_outer_placeholdervar(PlannerInfo *root,
                                           PlaceHolderVar *phv);
extern Param *replace_outer_agg(PlannerInfo *root, Aggref *agg);
extern Param *replace_outer_grouping(PlannerInfo *root, GroupingFunc *grp);
extern Param *replace_outer_merge_support(PlannerInfo *root,
                                          MergeSupportFunc *msf);
extern Param *replace_outer_returning(PlannerInfo *root,
                                      ReturningExpr *rexpr);
extern Param *replace_nestloop_param_var(PlannerInfo *root, Var *var);
extern Param *replace_nestloop_param_placeholdervar(PlannerInfo *root,
                                                    PlaceHolderVar *phv);
extern void process_subquery_nestloop_params(PlannerInfo *root,
                                             List *subplan_params);
extern List *identify_current_nestloop_params(PlannerInfo *root,
                                              Relids leftrelids,
                                              Relids outerrelids);
extern Param *generate_new_exec_param(PlannerInfo *root, Oid paramtype,
                                      int32 paramtypmod, Oid paramcollation);
extern int  assign_special_exec_param(PlannerInfo *root);
 
#endif                          /* PARAMASSIGN_H */