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Add detection and warnings for UNION and HAVING clauses.

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Generate non-fatal warning only and proceed by ignoring clauses.
This commit is contained in:
Thomas G. Lockhart 1997-09-01 05:56:34 +00:00
parent 05eb632864
commit 05cdb99bfb
1 changed files with 15 additions and 2 deletions
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17
src/backend/parser/analyze.c
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@ -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 *