Der fehlerhafte Selekt-String
PREPARE stmt_verf3 FROM "Select CAST(sum(bp.menge-bp.stornomenge-bp.bmenge) as decimal) as menge from bestellposten bp, bestellungen b where
b.sessionnr<>? and b.id=bp.bestid and (b.status='N' or b.status='B') and bp.varid=? and bp.liefdatum<'2003.01.01'"