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Deliver better error message when a relation name is used in an expression.

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Per report from Ian Barwick.
This commit is contained in:
Tom Lane 2002-12-27 20:06:19 +00:00
parent 6c08905d4c
commit a8a820668a
1 changed files with 12 additions and 1 deletions
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13
src/backend/parser/parse_expr.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/parse_expr.c,v 1.137 2002/12/12 20:35:13 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/parse_expr.c,v 1.138 2002/12/27 20:06:19 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -934,6 +934,7 @@ exprType(Node *expr)
if (!qtree || !IsA(qtree, Query))
elog(ERROR, "exprType: Cannot get type for untransformed sublink");
tent = (TargetEntry *) lfirst(qtree->targetList);
Assert(IsA(tent, TargetEntry));
type = tent->resdom->restype;
}
else
@ -967,6 +968,16 @@ exprType(Node *expr)
case T_ConstraintTestValue:
type = ((ConstraintTestValue *) expr)->typeId;
break;
case T_RangeVar:
/*
* If someone uses a bare relation name in an expression,
* we will likely first notice a problem here (see comments in
* transformColumnRef()). Issue an appropriate error message.
*/
elog(ERROR, "Relation reference \"%s\" cannot be used in an expression",
((RangeVar *) expr)->relname);
type = InvalidOid; /* keep compiler quiet */
break;
default:
elog(ERROR, "exprType: Do not know how to get type for %d node",
nodeTag(expr));