Question

这是问题：我希望用户在“状态”列中输入值“d％”，值为“完成”，如果输入“p％”，则设置值“处理”

示例代码：

create trigger Update_status
on orders 
after insert, UPDATE
as
    update orders
       case orders.status like
          when 'd%' then set orders.status='done'
          when 'p%' then set orders.status='processing'
       end

Answer 1

整个case语句必须是您将字段设置为的值。

create trigger Update_status
on orders 
after insert, UPDATE
as
    update orders
    set order.status = 
       case
           when orders.status like 'd%' then 'done'
           when orders.status like 'p%' then 'processing'
       end

如何在CASE中使用CASE编写触发器？

1 个答案: