mirror of
https://github.com/postgres/postgres.git
synced 2026-02-16 00:57:52 -05:00
fa559a86ee
with index qual clauses in the Path representation. This saves a little work during createplan and (probably more importantly) allows reuse of cached selectivity estimates during indexscan planning. Also fix latent bug: wrong plan would have been generated for a 'special operator' used in a nestloop-inner-indexscan join qual, because the special operator would not have gotten into the list of quals to recheck. This bug is only latent because at present the special-operator code could never trigger on a join qual, but sooner or later someone will want to do it.
36 lines
1.3 KiB
C
36 lines
1.3 KiB
C
/*-------------------------------------------------------------------------
|
|
*
|
|
* restrictinfo.h
|
|
* prototypes for restrictinfo.c.
|
|
*
|
|
*
|
|
* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
|
|
* Portions Copyright (c) 1994, Regents of the University of California
|
|
*
|
|
* $PostgreSQL: pgsql/src/include/optimizer/restrictinfo.h,v 1.23 2004/01/05 23:39:54 tgl Exp $
|
|
*
|
|
*-------------------------------------------------------------------------
|
|
*/
|
|
#ifndef RESTRICTINFO_H
|
|
#define RESTRICTINFO_H
|
|
|
|
#include "nodes/relation.h"
|
|
|
|
extern RestrictInfo *make_restrictinfo(Expr *clause, bool is_pushed_down,
|
|
bool valid_everywhere);
|
|
extern List *make_restrictinfo_from_indexclauses(List *indexclauses,
|
|
bool is_pushed_down,
|
|
bool valid_everywhere);
|
|
extern bool restriction_is_or_clause(RestrictInfo *restrictinfo);
|
|
extern List *get_actual_clauses(List *restrictinfo_list);
|
|
extern void get_actual_join_clauses(List *restrictinfo_list,
|
|
List **joinquals, List **otherquals);
|
|
extern List *remove_redundant_join_clauses(Query *root,
|
|
List *restrictinfo_list,
|
|
JoinType jointype);
|
|
extern List *select_nonredundant_join_clauses(Query *root,
|
|
List *restrictinfo_list,
|
|
List *reference_list,
|
|
JoinType jointype);
|
|
|
|
#endif /* RESTRICTINFO_H */
|