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Apply my original fix for Taiki Yamaguchi's bug report about DISTINCT MAX().

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Add some regression tests for plausible failures in this area.
This commit is contained in:
Tom Lane
2008-03-31 16:59:26 +00:00
parent e86237ff31
commit d344115519
5 changed files with 96 additions and 3 deletions
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5
src/include/optimizer/paths.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/optimizer/paths.h,v 1.103 2008/01/01 19:45:58 momjian Exp $
* $PostgreSQL: pgsql/src/include/optimizer/paths.h,v 1.104 2008/03/31 16:59:26 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -127,6 +127,9 @@ extern void add_child_rel_equivalences(PlannerInfo *root,
AppendRelInfo *appinfo,
RelOptInfo *parent_rel,
RelOptInfo *child_rel);
extern void mutate_eclass_expressions(PlannerInfo *root,
Node *(*mutator) (),
void *context);
extern List *find_eclass_clauses_for_index_join(PlannerInfo *root,
RelOptInfo *rel,
Relids outer_relids);