*** pgsql/src/backend/optimizer/prep/prepunion.c	2009/03/05 17:30:29	1.167
--- pgsql/src/backend/optimizer/prep/prepunion.c	2009/03/31 22:12:48	1.168
***************
*** 22,28 ****
   *
   *
   * IDENTIFICATION
!  *	  $PostgreSQL: pgsql/src/backend/optimizer/prep/prepunion.c,v 1.166 2009/02/25 03:30:37 tgl Exp $
   *
   *-------------------------------------------------------------------------
   */
--- 22,28 ----
   *
   *
   * IDENTIFICATION
!  *	  $PostgreSQL: pgsql/src/backend/optimizer/prep/prepunion.c,v 1.167 2009/03/05 17:30:29 tgl Exp $
   *
   *-------------------------------------------------------------------------
   */
*************** expand_inherited_rtentry(PlannerInfo *ro
*** 1258,1278 ****
  		Index		childRTindex;
  		AppendRelInfo *appinfo;
  
  		/*
  		 * It is possible that the parent table has children that are temp
  		 * tables of other backends.  We cannot safely access such tables
  		 * (because of buffering issues), and the best thing to do seems to be
  		 * to silently ignore them.
  		 */
! 		if (childOID != parentOID &&
! 			isOtherTempNamespace(get_rel_namespace(childOID)))
  			continue;
! 
! 		/* Open rel, acquire the appropriate lock type */
! 		if (childOID != parentOID)
! 			newrelation = heap_open(childOID, lockmode);
! 		else
! 			newrelation = oldrelation;
  
  		/*
  		 * Build an RTE for the child, and attach to query's rangetable list.
--- 1258,1280 ----
  		Index		childRTindex;
  		AppendRelInfo *appinfo;
  
+ 		/* Open rel, acquire the appropriate lock type */
+ 		if (childOID != parentOID)
+ 			newrelation = heap_open(childOID, lockmode);
+ 		else
+ 			newrelation = oldrelation;
+ 
  		/*
  		 * It is possible that the parent table has children that are temp
  		 * tables of other backends.  We cannot safely access such tables
  		 * (because of buffering issues), and the best thing to do seems to be
  		 * to silently ignore them.
  		 */
! 		if (childOID != parentOID && RELATION_IS_OTHER_TEMP(newrelation))
! 		{
! 			heap_close(newrelation, lockmode);
  			continue;
! 		}
  
  		/*
  		 * Build an RTE for the child, and attach to query's rangetable list.