这是我的触发器,我得到了MySQL语法错误。我想减少sms_index表sms_count列值的余额。CREATE TRIGGER sms_log_update AFTER UPDATE ON sms_index BEGIN UPDATE sms_package SET balance = (balance - OLD.sms
我已经学习了Oracle SQL中的触发器,但不太精通MySQL。我正在尝试将触发器命令从Oracle转换为MySQL。首先,我找不到when语句,而是找到了if else。这是我写的:after update on accountbegin insert into loan(select new.a