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Minor code cleanup in optimizer.

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This commit is contained in:
Tom Lane
1999-05-16 19:45:37 +00:00
parent f2ed835baf
commit fecb2b0024
3 changed files with 16 additions and 29 deletions
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28
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 1.34 1999/05/01 19:47:42 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/joinpath.c,v 1.35 1999/05/16 19:45:37 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -418,29 +418,21 @@ match_unsorted_inner(RelOptInfo *joinrel,
List *innerpath_list,
List *mergeinfo_list)
{
Path *innerpath = (Path *) NULL;
List *mp_list = NIL;
PathOrder *innerpath_ordering = NULL;
Cost temp1 = 0.0;
bool temp2 = false;
List *i = NIL;
List *i;
foreach(i, innerpath_list)
{
Path *innerpath = (Path *) lfirst(i);
PathOrder *innerpath_ordering = innerpath->pathorder;
MergeInfo *xmergeinfo = (MergeInfo *) NULL;
List *clauses = NIL;
List *matchedJoinKeys = NIL;
List *matchedJoinClauses = NIL;
innerpath = (Path *) lfirst(i);
innerpath_ordering = innerpath->pathorder;
if (innerpath_ordering)
{
xmergeinfo = match_order_mergeinfo(innerpath_ordering,
mergeinfo_list);
}
mergeinfo_list);
if (xmergeinfo)
clauses = ((JoinMethod *) xmergeinfo)->clauses;
@ -463,13 +455,13 @@ match_unsorted_inner(RelOptInfo *joinrel,
*/
if (clauses && matchedJoinKeys)
{
Cost temp1;
temp1 = outerrel->cheapestpath->path_cost +
cost_sort(matchedJoinKeys, outerrel->size, outerrel->width);
temp2 = (bool) (FLOAT_IS_ZERO(innerpath->outerjoincost)
|| (innerpath->outerjoincost > temp1));
if (temp2)
if (innerpath->outerjoincost <= 0 /* unset? */
|| innerpath->outerjoincost > temp1)
{
List *outerkeys = make_pathkeys_from_joinkeys(matchedJoinKeys,
outerrel->targetlist,
@ -494,8 +486,8 @@ match_unsorted_inner(RelOptInfo *joinrel,
}
}
}
return mp_list;
return mp_list;
}
static bool