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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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6
src/backend/optimizer/path/clausesel.c
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@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/clausesel.c,v 1.18 1999/02/15 01:06:57 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/clausesel.c,v 1.19 1999/05/16 19:45:37 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -53,7 +53,7 @@ set_clause_selectivities(List *restrictinfo_list, Cost new_selectivity)
{
clausenode = (RestrictInfo *) lfirst(temp);
cost_clause = clausenode->selectivity;
if (FLOAT_IS_ZERO(cost_clause) || new_selectivity < cost_clause)
if (cost_clause <= 0 || new_selectivity < cost_clause)
clausenode->selectivity = new_selectivity;
}
}
@@ -129,7 +129,7 @@ set_rest_selec(Query *root, List *restrictinfo_list)
* Check to see if the selectivity of this clause or any 'or'
* subclauses (if any) haven't been set yet.
*/
if (valid_or_clause(clausenode) || FLOAT_IS_ZERO(cost_clause))
if (cost_clause <= 0 || valid_or_clause(clausenode))
{
clausenode->selectivity = compute_clause_selec(root,
(Node *) clausenode->clause,