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The result of a FULL or RIGHT join can't be assumed to be sorted by the

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left input's sorting, because null rows may be inserted at various points.
Per report from Ferenc Lutischá¸n.
This commit is contained in:
Tom Lane
2005-01-23 02:21:36 +00:00
parent d08889aa8b
commit 94e4778a31
3 changed files with 16 additions and 5 deletions
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3
src/include/optimizer/paths.h
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@@ -8,7 +8,7 @@
* 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 1.77 2004/12/31 22:03:36 pgsql Exp $
* $PostgreSQL: pgsql/src/include/optimizer/paths.h,v 1.78 2005/01/23 02:21:36 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -114,6 +114,7 @@ extern List *build_subquery_pathkeys(Query *root, RelOptInfo *rel,
Query *subquery);
extern List *build_join_pathkeys(Query *root,
RelOptInfo *joinrel,
JoinType jointype,
List *outer_pathkeys);
extern List *make_pathkeys_for_sortclauses(List *sortclauses,
List *tlist);