greenplumn appendinfo 源码
greenplumn appendinfo 代码
文件路径：/src/include/optimizer/appendinfo.h
/*-------------------------------------------------------------------------
*
* appendinfo.h
* Routines for mapping expressions between append rel parent(s) and
* children
*
* Portions Copyright (c) 1996-2019, 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,
Relids child_relids,
Relids top_parent_relids);
extern Relids adjust_child_relids(Relids relids, int nappinfos,
AppendRelInfo **appinfos);
extern Relids adjust_child_relids_multilevel(PlannerInfo *root, Relids relids,
Relids child_relids, Relids top_parent_relids);
extern AppendRelInfo **find_appinfos_by_relids(PlannerInfo *root,
Relids relids, int *nappinfos);
#endif /* APPENDINFO_H */
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