mysql trigger after update
CREATE TRIGGER after_sales_update
AFTER UPDATE
ON sales FOR EACH ROW
BEGIN
IF OLD.quantity <> new.quantity THEN
INSERT INTO SalesChanges(salesId,beforeQuantity, afterQuantity)
VALUES(old.id, old.quantity, new.quantity);
END IF;
END$$mysql trigger to delete old data
SET GLdelimiter //
create event if not exists clean_old_records
on schedule every 1 week
do
begin
delete from your_table_name
where
Timestamp < date_sub(curdate(),interval 1 month) ;
end; //
delimiter ;OBAL event_scheduler = ON;Copyright © 2021 Codeinu
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