"Jörg Holetschek" <[EMAIL PROTECTED]> writes: > CASE > WHEN ((focus <> NULL) AND (epilepsy_class = 'f')) THEN > TRUE
Try "focus IS NOT NULL". regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 2: you can get off all lists at once with the unregister command (send "unregister YourEmailAddressHere" to [EMAIL PROTECTED])