MySql觸發器實現數據同步學習

觸發器實現：（增、刪、改操作事件觸發數據單向同步）
數據庫觸發器教程：https://www.cnblogs.com/phpper/p/7587031.html
同步代碼：

DELIMITER $
DROP TRIGGER IF EXISTS insertdata;
CREATE TRIGGER insertdata AFTER INSERT ON repair.user FOR EACH ROW
BEGIN
DECLARE s1 INT(11);
DECLARE s2 VARCHAR(30);
SET s1=NEW.id;
SET s2=NEW.name;
INSERT INTO sale.user(id,name) VALUES(s1,s2);
END $

DELIMITER $
DROP TRIGGER IF EXISTS updatedata;
CREATE TRIGGER updatedata AFTER UPDATE ON repair.user FOR EACH ROW
BEGIN
DECLARE s1 INT(11);
DECLARE s2 VARCHAR(30);
SET s1=OLD.id;
SET s2=NEW.name;
UPDATE sale.user a SET a.name=s2 WHERE a.id=s1;
END $

DELIMITER $
DROP TRIGGER IF EXISTS deletedata;
CREATE TRIGGER deletedata AFTER DELETE ON repair.user FOR EACH ROW
BEGIN
DECLARE s1 INT(11);
DECLARE s2 VARCHAR(30);
SET s1=OLD.id;
SET s2=OLD.name;
DELETE FROM sale.user WHERE id=s1;
END $