*** postgresql-6.5.2/src/backend/executor/execQual.c.orig	Sun Jun 13 04:22:40 1999
--- postgresql-6.5.2/src/backend/executor/execQual.c	Sat Oct  9 19:53:01 1999
***************
*** 1128,1136 ****
  
  		/*
  		 * if we have a true test, then we return the result, since the
! 		 * case statement is satisfied.
  		 */
! 		if (DatumGetInt32(const_value) != 0)
  		{
  			const_value = ExecEvalExpr((Node *) wclause->result,
  									   econtext,
--- 1128,1137 ----
  
  		/*
  		 * if we have a true test, then we return the result, since the
! 		 * case statement is satisfied.  A NULL result from the test is
! 		 * not considered true.
  		 */
! 		if (DatumGetInt32(const_value) != 0 && ! *isNull)
  		{
  			const_value = ExecEvalExpr((Node *) wclause->result,
  									   econtext,