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Whole-row references were broken for subqueries and functions, because

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attr_needed/attr_widths optimization failed to allow for Vars with attno
zero in this case.  Per report from Tatsuo Ishii.
This commit is contained in:
Tom Lane 2003-12-08 18:20:10 +00:00
parent 1db8cd36d8
commit 1b1d2d5f31
1 changed files with 8 additions and 14 deletions
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22
src/backend/optimizer/util/relnode.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/util/relnode.c,v 1.52 2003/08/04 02:40:01 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/util/relnode.c,v 1.52.4.1 2003/12/08 18:20:10 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -161,7 +161,8 @@ make_base_rel(Query *root, int relid)
case RTE_SUBQUERY:
case RTE_FUNCTION:
/* Subquery or function --- need only set up attr range */
rel->min_attr = 1;
/* Note: 0 is included in range to support whole-row Vars */
rel->min_attr = 0;
rel->max_attr = length(rte->eref->colnames);
break;
default:
@ -170,18 +171,11 @@ make_base_rel(Query *root, int relid)
break;
}
if (rel->max_attr >= rel->min_attr)
{
rel->attr_needed = (Relids *)
palloc0((rel->max_attr - rel->min_attr + 1) * sizeof(Relids));
rel->attr_widths = (int32 *)
palloc0((rel->max_attr - rel->min_attr + 1) * sizeof(int32));
}
else
{
rel->attr_needed = NULL;
rel->attr_widths = NULL;
}
Assert(rel->max_attr >= rel->min_attr);
rel->attr_needed = (Relids *)
palloc0((rel->max_attr - rel->min_attr + 1) * sizeof(Relids));
rel->attr_widths = (int32 *)
palloc0((rel->max_attr - rel->min_attr + 1) * sizeof(int32));
return rel;
}