p7htby9zf/触发器.sql

##测试
-- 第一个触发器
drop TRIGGER if EXISTS updateOd;
create Trigger updateOd
after update 
on orderdetails for each ROW
begin 
	declare done int default 0; 
	DECLARE dST VARCHAR(10);
	DECLARE flag int DEFAULT 1;
-- 创建游标，并存储数据  
	declare cur_test cursor for select deliveryStatus from orderdetails where orderNo = old.orderNo;
-- 游标中的内容执行完后将done设置为1  
	declare continue handler for not found set done = 1;  
-- 打开游标  
	open cur_test;  
-- 执行循环  
		posLoop:loop  
-- 判断是否结束循环  
			IF done = 1 THEN    
				LEAVE posLoop;  
			END IF;
-- 取游标中的值
			FETCH  cur_test into dST;
			IF dST = '已配送' THEN
				set @flag = 1;
			ELSE
				set @flag = 0;
			END IF;
		end loop;
-- 释放游标  
	close cur_test;
	IF @flag = 1 then
		UPDATE orders SET orderStatus = '已处理' WHERE orderNo=old.orderNo;
	end if;
end;

set names utf8 ;
-- update orderdetails set deliveryStatus = '已配送' WHERE orderNo = '00000012020-07-02 16:31:15';



-- 第三个触发器
drop TRIGGER if EXISTS updateUser;
create Trigger updateUser
after update 
on orders for each ROW
begin
	declare sm int default 0;
	declare um varchar(10);
	select sumMoney into sm from orders WHERE orderNo=old.orderNo;
	select userNo into um from orders WHERE orderNo=old.orderNo;
	update users set level = floor(sm/100) where users.userNo = um;
end;


-- 第一个触发器
drop TRIGGER if EXISTS updateDBL;
create Trigger updateDBL
after update 
on distributionlist for each ROW
begin
	IF new.deliveryStatus = '已完成配送' THEN
		update orderdetails SET deliveryStatus = '已配送' where orderNo = old.orderNo;
	END IF;
end;

-- 这里测试的时候需要修改orderNo的实时订单号
update distributionlist set deliveryStatus = '已完成配送' WHERE orderNo = '00000012020-07-02 16:53:29';