Quelle  appendinfo.h

/*-------------------------------------------------------------------------
 *
 * appendinfo.h
 *   Routines for mapping expressions between append rel parent(s) and
 *   children
 *
 * Portions Copyright (c) 1996-2025, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * src/include/optimizer/appendinfo.h
 *
 *-------------------------------------------------------------------------
 */
#ifndef APPENDINFO_H
#define APPENDINFO_H

#include "nodes/pathnodes.h"
#include "utils/relcache.h"

extern AppendRelInfo *make_append_rel_info(Relation parentrel,
             Relation childrel,
             Index parentRTindex, Index childRTindex);
extern Node *adjust_appendrel_attrs(PlannerInfo *root, Node *node,
         int nappinfos, AppendRelInfo **appinfos);
extern Node *adjust_appendrel_attrs_multilevel(PlannerInfo *root, Node *node,
              RelOptInfo *childrel,
              RelOptInfo *parentrel);
extern Relids adjust_child_relids(Relids relids, int nappinfos,
          AppendRelInfo **appinfos);
extern Relids adjust_child_relids_multilevel(PlannerInfo *root, Relids relids,
            RelOptInfo *childrel,
            RelOptInfo *parentrel);
extern List *adjust_inherited_attnums(List *attnums, AppendRelInfo *context);
extern List *adjust_inherited_attnums_multilevel(PlannerInfo *root,
             List *attnums,
             Index child_relid,
             Index top_parent_relid);
extern void get_translated_update_targetlist(PlannerInfo *root, Index relid,
            List **processed_tlist,
            List **update_colnos);
extern AppendRelInfo **find_appinfos_by_relids(PlannerInfo *root,
              Relids relids, int *nappinfos);
extern void add_row_identity_var(PlannerInfo *root, Var *orig_var,
         Index rtindex, const char *rowid_name);
extern void add_row_identity_columns(PlannerInfo *root, Index rtindex,
          RangeTblEntry *target_rte,
          Relation target_relation);
extern void distribute_row_identity_vars(PlannerInfo *root);

#endif       /* APPENDINFO_H */