一个实践可以的创建trigger的SQL
DELIMITER |
create trigger databasename.tablename before update on databasename.tablename
for each row
BEGIN
update event
set title='abc'
where title='123';
END|
DELIMITER ;
DELIMITER |
create trigger databasename.tablename before update on databasename.tablename
for each row
BEGIN
update event
set title='abc'
where title='123';
END|
DELIMITER ;