Use this approach outlined in this Reporter FAQ entry instead (summary: use a flag variabale with the WHERE clause instead of an IF…THEN…ELSE statement),
Andreas 
(BOB member since 2002-06-20)
Use this approach outlined in this Reporter FAQ entry instead (summary: use a flag variabale with the WHERE clause instead of an IF…THEN…ELSE statement),
Andreas (BOB member since 2002-06-20)