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Fix a bunch of bad interactions between partial indexes and the new

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planning logic for bitmap indexscans.  Partial indexes create corner
cases in which a scan might be done with no explicit index qual conditions,
and the code wasn't handling those cases nicely.  Also be a little
tenser about eliminating redundant clauses in the generated plan.
Per report from Dmitry Karasik.
This commit is contained in:
Tom Lane
2005-07-28 20:26:22 +00:00
parent 3535cb827a
commit a4ca842319
9 changed files with 399 additions and 83 deletions
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5
src/include/optimizer/restrictinfo.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/optimizer/restrictinfo.h,v 1.32 2005/07/02 23:00:42 tgl Exp $
* $PostgreSQL: pgsql/src/include/optimizer/restrictinfo.h,v 1.33 2005/07/28 20:26:22 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -21,7 +21,8 @@ extern RestrictInfo *make_restrictinfo(Expr *clause,
bool is_pushed_down,
Relids required_relids);
extern List *make_restrictinfo_from_bitmapqual(Path *bitmapqual,
bool is_pushed_down);
bool is_pushed_down,
bool include_predicates);
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,