From a9b69b0081bd64ead27484d49f2c4af637602636 Mon Sep 17 00:00:00 2001
From: CTGU-HW <1499086342@qq.com>
Date: Thu, 2 Jul 2020 17:42:41 +0800
Subject: [PATCH] first commit

---
 T.sql | 69 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 T.sql

diff --git a/T.sql b/T.sql
new file mode 100644
index 0000000..6661825
--- /dev/null
+++ b/T.sql
@@ -0,0 +1,69 @@
+
+-- 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';