FOR EACH ROW
BEGIN
-- make sure that act_start does not get modified if sent is set.
- IF (OLD.sent IS NOT NULL AND OLD.sent != '0000-00-00 00:00:00')
+ IF (OLD.sent IS NOT NULL AND OLD.sent > '1500-00-00 00:00:00')
AND ( NEW.act_start != OLD.act_start OR NEW.act_when != OLD.act_when ) THEN
UPDATE `Error: Can not update core_notify action dates after its sent` SET x = 1;
END IF;