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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/paths.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/paths.h,v 1.85 2005/06/10 22:25:37 tgl Exp $
* $PostgreSQL: pgsql/src/include/optimizer/paths.h,v 1.86 2005/07/28 20:26:22 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -43,7 +43,8 @@ extern Path *best_inner_indexscan(PlannerInfo *root, RelOptInfo *rel,
Relids outer_relids, JoinType jointype);
extern List *group_clauses_by_indexkey(IndexOptInfo *index,
List *clauses, List *outer_clauses,
Relids outer_relids);
Relids outer_relids,
bool *found_clause);
extern bool match_index_to_operand(Node *operand, int indexcol,
IndexOptInfo *index);
extern List *expand_indexqual_conditions(IndexOptInfo *index,