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Disallow aggregate functions in rule WHERE clauses. Per gripe from

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Fritz Lehmann-Grube back in January.
This commit is contained in:
Tom Lane 2002-10-20 00:31:53 +00:00
parent ea794574f1
commit 6d6b582850
1 changed files with 5 additions and 1 deletions
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6
src/backend/parser/analyze.c
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@ -6,7 +6,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Header: /cvsroot/pgsql/src/backend/parser/analyze.c,v 1.251 2002/10/14 22:14:35 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/analyze.c,v 1.252 2002/10/20 00:31:53 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -1454,6 +1454,10 @@ transformRuleStmt(ParseState *pstate, RuleStmt *stmt,
if (length(pstate->p_rtable) != 2) /* naughty, naughty... */
elog(ERROR, "Rule WHERE condition may not contain references to other relations");
/* aggregates not allowed (but subselects are okay) */
if (contain_agg_clause(stmt->whereClause))
elog(ERROR, "Rule WHERE condition may not contain aggregate functions");
/* save info about sublinks in where clause */
qry->hasSubLinks = pstate->p_hasSubLinks;