From 05cdb99bfbb5e0643af5ae76db7bb142fc03ca10 Mon Sep 17 00:00:00 2001
From: "Thomas G. Lockhart" <lockhart@fourpalms.org>
Date: Mon, 1 Sep 1997 05:56:34 +0000
Subject: [PATCH] Add detection and warnings for UNION and HAVING clauses.
Generate non-fatal warning only and proceed by ignoring clauses.
---
src/backend/parser/analyze.c | 17 +++++++++++++++--
1 file changed, 15 insertions(+), 2 deletions(-)
diff --git a/src/backend/parser/analyze.c b/src/backend/parser/analyze.c
index 9b4c88b9ae9..011915df8e7 100644
--- a/src/backend/parser/analyze.c
+++ b/src/backend/parser/analyze.c
@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/parser/analyze.c,v 1.35 1997/08/22 00:02:04 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/parser/analyze.c,v 1.36 1997/09/01 05:56:34 thomas Exp $
*
*-------------------------------------------------------------------------
*/
@@ -429,6 +429,14 @@ transformSelectStmt(ParseState *pstate, RetrieveStmt *stmt)
/* fix where clause */
qry->qual = transformWhereClause(pstate,stmt->whereClause);
+ /* check subselect clause */
+ if (stmt->selectClause)
+ elog(NOTICE,"UNION not yet supported; using first SELECT only",NULL);
+
+ /* check subselect clause */
+ if (stmt->havingClause)
+ elog(NOTICE,"HAVING not yet supported; ignore clause",NULL);
+
/* fix order clause */
qry->sortClause = transformSortClause(pstate,
stmt->sortClause,
@@ -1494,6 +1502,11 @@ find_targetlist_entry(ParseState *pstate, SortGroupBy *sortgroupby, List *tlist)
char *resname = resnode->resname;
int test_rtable_pos = var->varno;
+#ifdef PARSEDEBUG
+printf("find_targetlist_entry- target name is %s, position %d, resno %d\n",
+ (sortgroupby->name? sortgroupby->name: "(null)"), target_pos+1, sortgroupby->resno);
+#endif
+
if (!sortgroupby->name) {
if (sortgroupby->resno == ++target_pos) {
target_result = target;
@@ -1534,7 +1547,7 @@ any_ordering_op(int restype)
/*
* transformGroupClause -
- * transform an Group By clause
+ * transform a Group By clause
*
*/
static List *
--
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