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Major optimizer improvement for joining a large number of tables.

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This commit is contained in:
Bruce Momjian
1999-02-09 03:51:42 +00:00
parent be948af2e8
commit fe35ffe7e0
21 changed files with 277 additions and 139 deletions
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10
src/backend/optimizer/path/joinpath.c
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@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/joinpath.c,v 1.15 1999/02/08 04:29:11 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/joinpath.c,v 1.16 1999/02/09 03:51:19 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -324,11 +324,11 @@ match_unsorted_outer(RelOptInfo * joinrel,
List *clauses = NIL;
List *matchedJoinKeys = NIL;
List *matchedJoinClauses = NIL;
MergeInfo *xmergeinfo = (MergeInfo *) NULL;
MergeInfo *xmergeinfo = (MergeInfo *) NULL;
outerpath = (Path *) lfirst(i);
outerpath_ordering = &outerpath->path_order;
outerpath_ordering = outerpath->path_order;
if (outerpath_ordering)
{
@ -464,14 +464,14 @@ match_unsorted_inner(RelOptInfo * joinrel,
foreach(i, innerpath_list)
{
MergeInfo *xmergeinfo = (MergeInfo *) NULL;
MergeInfo *xmergeinfo = (MergeInfo *) NULL;
List *clauses = NIL;
List *matchedJoinKeys = NIL;
List *matchedJoinClauses = NIL;
innerpath = (Path *) lfirst(i);
innerpath_ordering = &innerpath->path_order;
innerpath_ordering = innerpath->path_order;
if (innerpath_ordering)
{