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Implement CASE expression.

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This commit is contained in:
Thomas G. Lockhart
1998-12-04 15:34:49 +00:00
parent 19740e2fff
commit bedd04a551
17 changed files with 779 additions and 110 deletions
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9
src/backend/optimizer/plan/createplan.c
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@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/plan/createplan.c,v 1.33 1998/11/22 10:48:43 vadim Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/plan/createplan.c,v 1.34 1998/12/04 15:34:05 thomas Exp $
*
*-------------------------------------------------------------------------
*/
@ -437,7 +437,7 @@ create_nestloop_node(JoinPath *best_path,
* used in the inner scan path, so we need only consider the first
* set of qualifications in indxqual.
*
* But there may be more than one clauses in this "first set" in the
* But there may be more than one clause in this "first set" in the
* case of multi-column indices. - vadim 03/18/97
*/
@ -735,6 +735,11 @@ fix_indxqual_references(Node *clause, Path *index_path)
else
return clause;
}
else if (IsA(clause, CaseExpr))
{
elog(NOTICE,"optimizer: fix_indxqual_references sees CaseExpr");
return clause;
}
else
{
List *oldclauses = (List *) clause;