diff --git "a/19\351\231\210\345\277\227\346\242\201/\344\275\234\344\270\232/2022-09-26\345\255\230\345\202\250\350\277\207\347\250\213.sql" "b/19\351\231\210\345\277\227\346\242\201/\344\275\234\344\270\232/2022-09-26\345\255\230\345\202\250\350\277\207\347\250\213.sql"
new file mode 100644
index 0000000000000000000000000000000000000000..614d1504466db9771a02d813f59ac36a214713f1
--- /dev/null
+++ "b/19\351\231\210\345\277\227\346\242\201/\344\275\234\344\270\232/2022-09-26\345\255\230\345\202\250\350\277\207\347\250\213.sql"
@@ -0,0 +1,86 @@
+select * from AccountInfo 
+
+--1. 定义存储过程实现查询出账户余额最低的银行卡账户信息,显示银行卡号，姓名，账户余额
+
+go
+create proc proc_min
+as
+select top 1 cardno,RealName,CardMoney from AccountInfo a join BankCard b on a.AccountId=b.AccountId order by CardMoney
+go
+
+exec proc_min
+--2. 模拟银行卡存钱操作，传入银行卡号，存钱金额，实现存钱操作
+
+go
+create proc proc_inbank
+@no varchar(20),@money money
+as
+update BankCard set CardMoney=CardMoney+@money where CardNo=@no
+insert CardExchange values(@no,@money,0,GETDATE())
+go
+
+exec proc_inbank '6225125478544587',500
+--3. 模拟银行卡取钱操作，传入银行卡号，取钱金额，实现取钱操作，取钱成功，返回1，取钱失败返回-1
+
+go
+create proc proc_outbank
+@no varchar(20),@money money
+as
+declare @moneys money
+select @moneys=CardMoney from BankCard where CardNo=@no
+if(@money> @moneys)
+begin
+return -1
+end
+else 
+begin
+update BankCard set CardMoney=CardMoney-@money where CardNo=@no
+insert CardExchange values(@no,0,@money,GETDATE())
+return 1
+end
+go
+
+declare @i int
+exec @i= proc_outbank '6225125478544587',500
+print @i
+--4. 查询出某时间段的银行存取款信息以及存款总金额，取款总金额， --传入开始时间，结束时间，显示存取款交易信息的同时，返回存款总金额，取款总金额。
+
+go
+create proc proc_moneyinbank
+@bgindate date,@enddate date,@inbank money output,@outbank money output
+as
+select * from CardExchange where ExchangeTime between @bgindate and @enddate
+select @inbank=sum(MoneyInBank),@outbank=sum(MoneyOutBank) from CardExchange where ExchangeTime between @bgindate and @enddate
+go
+
+declare @inbank money ,@outbank money ,@x varchar(20)
+exec proc_moneyinbank '2022-09-01','2022-09-30',@inbank output,@outbank output
+print '存款金额'+cast(@inbank as varchar(20))+'取款金额'+cast(@outbank as varchar(20))
+--5. **密码升级**，传入用户名和密码，如果用户名密码正确，并且密码长度<8，自动升级成8位密码
+go
+create proc proc_pass
+@no varchar(20),@pass varchar(20)
+as
+declare @i varchar(20)
+select @i=a.AccountId from AccountInfo a join BankCard b on a.AccountId=b.AccountId where AccountCode=@no and CardPwd=@pass
+if @i=null 
+	begin
+	raiserror('账号或密码错误',16,1)
+	end
+else
+	begin
+	if len(@pass)<8
+		begin
+	declare @xx varchar(20) 
+	select @xx=floor(rand()*10)
+	while len(@pass)<8
+	begin 
+	set @pass=@pass+@xx
+	end
+	update BankCard set CardPwd=@pass where AccountId=@i
+		end
+	end
+
+go
+
+exec proc_pass '420107198905064135','123456'
\ No newline at end of file
diff --git "a/19\351\231\210\345\277\227\346\242\201/\344\275\234\344\270\232/2022-09-27\350\247\246\345\217\221\345\231\250.sql" "b/19\351\231\210\345\277\227\346\242\201/\344\275\234\344\270\232/2022-09-27\350\247\246\345\217\221\345\231\250.sql"
new file mode 100644
index 0000000000000000000000000000000000000000..d1c0707f8c7883c9a56121c3a756e23e010f8d50
--- /dev/null
+++ "b/19\351\231\210\345\277\227\346\242\201/\344\275\234\344\270\232/2022-09-27\350\247\246\345\217\221\345\231\250.sql"
@@ -0,0 +1,79 @@
+select * from Department select * from People --（1）假设有部门表和员工表，在添加员工的时候，该员工的部门编号如果在部门表中找不到，则自动添加部门信息，部门名称为"新部门"。
+
+go
+create trigger tr_departmentname
+on People for insert
+as
+declare @id varchar(20)
+select @id=(select DepartmentId from inserted)
+if exists(select * from Department where DepartmentId=@id)
+	begin
+	print '部门已经存在'
+	end
+	else
+	begin
+	insert Department values(@id,'新部门')
+	end
+go
+insert People values('007','赵云','男',10000)
+
+drop trigger tr_departmentname
+go
+--（2）触发器实现，删除一个部门的时候将部门下所有员工全部删除。
+
+create trigger tr_deletename
+on Department for delete
+as
+delete People where DepartmentId=(select DepartmentId from deleted)
+go
+delete Department where DepartmentName='市场部'
+--（3）创建一个触发器，删除一个部门的时候 判断该部门下是否有员工，有则不删除，没有则删除。
+
+--方法1
+go
+create trigger tr_deletenames
+on department after delete
+as
+declare @id varchar(20)
+select @id=(select DepartmentId from deleted)
+if exists(select * from People where DepartmentId=@id)
+	begin
+	print '不删除'
+	rollback TransAction
+	end
+go
+
+drop trigger tr_deletenames
+
+
+
+--方法2
+go
+create trigger tr_deletenss
+on department instead of delete
+as
+if exists(select * from People where DepartmentId=(select DepartmentId from deleted))
+	print '有员工，不删除'
+else 
+	delete Department where DepartmentId=(select DepartmentId from deleted)
+go
+
+delete Department where DepartmentId='004'
+--（4）修改一个部门编号之后，将该部门下所有员工的部门编号同步进行修改 先删除，后插入
+
+go
+create trigger tr_updateid
+on Department after update
+as
+declare @id varchar(20)
+declare @ids varchar(20)
+select @ids=DepartmentId from deleted --删除之后
+select @id=Departmentid from inserted --更新
+update People set DepartmentId=@id where DepartmentId=@ids
+
+go
+
+
+update Department set DepartmentId='005'where DepartmentName='总经办'
+
+drop trigger tr_updateid
\ No newline at end of file
diff --git "a/19\351\231\210\345\277\227\346\242\201/\347\254\224\350\256\260/2022-09-28\347\254\224\350\256\260-\350\247\246\345\217\221\345\231\2502.md" "b/19\351\231\210\345\277\227\346\242\201/\347\254\224\350\256\260/2022-09-28\347\254\224\350\256\260-\350\247\246\345\217\221\345\231\2502.md"
new file mode 100644
index 0000000000000000000000000000000000000000..398c6392e3d61b97f3293da9601763d9d9947d27
--- /dev/null
+++ "b/19\351\231\210\345\277\227\346\242\201/\347\254\224\350\256\260/2022-09-28\347\254\224\350\256\260-\350\247\246\345\217\221\345\231\2502.md"
@@ -0,0 +1,59 @@
+### 瑙﹀彂鍣�
+
+#### 鍒涘缓瑙﹀彂鍣ㄦ牸寮�
+
+```
+go
+create trigger tri_xx(瑙﹀彂鍣ㄥ悕绉�)
+on 琛ㄥ悕 after/instead of   insert/update/delete
+as 
+
+	begin
+	璁剧疆鍙橀噺
+	鍒ゆ柇
+	澧炲垹鏀�(鏌ヨ鏃朵娇鐢� from inserted/deleted)
+	end
+
+	insert into People values('005','鏉庡洓','濂�',1000)
+```
+
+#### after
+
+鍏堝畬鎴愯鍙ュ啀杩涜瑙﹀彂鍣�
+
+#### instead of
+
+璇彞涓嶆墽琛岋紝浣滀负鏉′欢寮曞彂瑙﹀彂鍣�
+
+#### 鍒犻櫎瑙﹀彂鍣�
+
+drop TRIGGER [IF EXISTS] [schema_name.]trigger_name
+
+#### 琛岃浆鍒�
+
+```
+MAX(CASE WEHN)鏂规硶
+
+SELECT name as '濮撳悕',
+       MAX(CASE WHEN course = '璇枃' THEN score END) AS '璇枃',
+       MAX(CASE WHEN course = '鏁板' THEN score END) AS '鏁板',
+       MAX(CASE WHEN course = '鑻辫' THEN score END) AS '鑻辫',
+       MAX(CASE WHEN course = '鍘嗗彶' THEN score END) AS '鍘嗗彶'
+FROM t_student
+GROUP BY name;
+
+
+
+SUM(IF(鏉′欢,鍒楀��,0))
+
+SELECT name as '濮撳悕',
+       SUM(IF(course = '璇枃',score,0)) AS '璇枃',
+       SUM(IF(course = '鏁板',score,0)) AS '鏁板',
+       SUM(IF(course = '鑻辫',score,0)) AS '鑻辫',
+       SUM(IF(course = '鍘嗗彶',score,0)) AS '鍘嗗彶'
+FROM t_student
+GROUP BY name;
+select * from  琛ㄥ悕 pivot (琛� for 鍒� in锛堛��1銆戙��2銆戯級) 琛ㄥ悕
+```
+
+#### 鍒楄浆琛�
\ No newline at end of file