diff --git "a/10\351\231\210\346\230\212\347\253\245/\344\275\234\344\270\232/22.10.6.sql" "b/10\351\231\210\346\230\212\347\253\245/\344\275\234\344\270\232/22.10.6.sql"
new file mode 100644
index 0000000000000000000000000000000000000000..0cfd6227ccc1024882da73b4500ce1c445aa07d6
--- /dev/null
+++ "b/10\351\231\210\346\230\212\347\253\245/\344\275\234\344\270\232/22.10.6.sql"
@@ -0,0 +1,164 @@
+--（1）编写一个函数求该银行的金额总和
+use BankTest
+go
+create function func_GetBankMoneyByAccId()
+returns money
+as
+begin
+	declare @SumBankMoney money
+	select @SumBankMoney =(select sum(CardMoney ) from BankCard)	
+	return @SumBankMoney 
+end
+go
+
+
+select dbo.func_GetBankMoneyByAccId() as 银行金额总和
+
+
+--（2）传入账户编号，返回账户真实姓名
+go
+create function func_GetInfoByAcco_Id(@id int)
+returns varchar(40)
+as
+begin
+	declare @name varchar(40)
+	select @name = (select RealName from AccountInfo where AccountId = @id)
+	return @name
+end
+go
+
+select dbo.func_GetInfoByAcco_Id( 2 ) as 姓名
+
+
+--（3）传递开始时间和结束时间，返回交易记录（存钱取钱），交易记录中包含 真实姓名，卡号，存钱金额，取钱金额，交易时间。
+
+--方案一（逻辑复杂，函数内容除了返回结果的sql语句还有其他内容，例如定义变量等）：
+
+go
+create function func_GetCardExchangeByOpenTimeAndEndTime(@OpenTime smalldatetime,@EndTime smalldatetime)
+returns @ExchangTable table(
+	Name varchar(30),
+	CardNo varchar(50),
+	MoneyInBank money,
+	MoneyOutBank money,
+	ExchangeTime smalldatetime
+)
+as
+begin
+	insert into @ExchangTable
+	select A.RealName,CE.CardNo,CE.MoneyInBank,CE.MoneyOutBank,CE.ExchangeTime from CardExchange CE 
+	join BankCard B on B.CardNo = CE.CardNo
+	join AccountInfo A on A.AccountId = B.AccountId
+	where A.OpenTime = @OpenTime and CE.ExchangeTime = @EndTime
+	return
+end
+go
+
+select * from func_GetCardExchangeByOpenTimeAndEndTime('2022-09-19 22:37:00','2022-09-19 22:37:00')
+
+
+
+
+--（4）查询银行卡信息，将银行卡状态1,2,3,4分别转换为汉字“正常,挂失,冻结,注销”，根据银行卡余额显示银行卡等级 30万以下为
+--“普通用户”,30万及以上为"VIP用户"，分别显示卡号，身份证，姓名，余额，用户等级，银行卡状态。
+
+--方案一：直接在sql语句中使用case when
+select B.CardNo,AccountCode,RealName,CardMoney,
+(
+	case when CardMoney<300000 then '普通用户'
+	else 'VIP用户'
+	end
+)用户等级,
+(
+	case when CardState=1 then '正常'
+		 when CardState=2 then '挂失'
+		 when CardState=3 then '冻结' else '注销'
+	end
+)银行卡状态
+from BankCard B
+join AccountInfo A on A.AccountId = B.AccountId
+
+
+--方案二：将等级和状态用函数实现
+--查询银行卡信息，将银行卡状态1,2,3,4分别转换为汉字“正常,挂失,冻结,注销”，根据银行卡余额显示银行卡等级 30万以下为
+--“普通用户”,30万及以上为"VIP用户"，分别显示卡号，身份证，姓名，余额，用户等级，银行卡状态。
+go
+create function fun_GetBankInfoByCardNo(@CardNo varchar(30))
+returns @BankInfo table(
+	CardNo varchar(30),
+	AccountCode varchar(30),
+	Name varchar(30),
+	CardMoney money,
+	UserLevel varchar(30),
+	BankCardStatus varchar(30)
+)
+as
+begin
+	insert into @BankInfo
+	select B.CardNo,AccountCode,RealName,CardMoney,
+	(
+		case when CardMoney<300000 then '普通用户'
+		else 'VIP用户'
+		end
+	)UserLevel,
+	(
+		case when CardState=1 then '正常'
+			 when CardState=2 then '挂失'
+			 when CardState=3 then '冻结' else '注销'
+		end
+	)BankCardStatus
+	from BankCard B
+	join AccountInfo A on A.AccountId = B.AccountId
+	where CardNo = @CardNo
+	return
+end
+go
+
+select * from fun_GetBankInfoByCardNo('6225547854125656')
+
+
+select * from AccountInfo
+select * from CardExchange
+select * from BankCard
+
+
+--（5）表格。。。。。。。。。。。
+create table Emp
+(
+	EmpId int primary key identity(1,2), --自动编号
+	empName varchar(20), --姓名
+	empSex varchar(4),   --性别
+	empBirth smalldatetime --生日
+)
+insert into Emp(empName,empSex,empBirth) values('刘备','男','2008-5-8')
+insert into Emp(empName,empSex,empBirth) values('关羽','男','1998-10-10')
+insert into Emp(empName,empSex,empBirth) values('张飞','男','1999-7-5')
+insert into Emp(empName,empSex,empBirth) values('赵云','男','2003-12-12')
+insert into Emp(empName,empSex,empBirth) values('马超','男','2003-1-5')
+insert into Emp(empName,empSex,empBirth) values('黄忠','男','1988-8-4')
+insert into Emp(empName,empSex,empBirth) values('魏延','男','1998-5-2')
+insert into Emp(empName,empSex,empBirth) values('简雍','男','1992-2-20')
+insert into Emp(empName,empSex,empBirth) values('诸葛亮','男','1993-3-1')
+insert into Emp(empName,empSex,empBirth) values('徐庶','男','1994-8-5')
+
+--编写函数，根据出生日期求年龄，年龄求实岁，例如：
+
+--​		生日为2000-5-5，当前为2018-5-4，年龄为17岁
+--​		生日为2000-5-5，当前为2018-5-6，年龄为18岁
+
+select * from Emp
+go
+create function fun_GetAgeByBirth(@id int,@NowTime datetime)
+returns int
+as
+begin
+	declare @BirthTime datetime
+	declare @age int
+	select @BirthTime = (select empBirth from Emp where EmpId = @id)
+	select @age = DATEDIFF(YY,@BirthTime,@NowTime)
+	select @age = case when DATEDIFF(DD,DATEADD(YY,@age,@BirthTime),@NowTime)<0 then @age-1 else @age end
+	return @age
+end
+go
+
+select dbo.fun_GetAgeByBirth(9,GETDATE()) as 年龄
\ No newline at end of file
diff --git "a/10\351\231\210\346\230\212\347\253\245/\344\275\234\344\270\232/22.10.7.sql" "b/10\351\231\210\346\230\212\347\253\245/\344\275\234\344\270\232/22.10.7.sql"
new file mode 100644
index 0000000000000000000000000000000000000000..ab76422284b1f1841eaefde23a26e378a7655dfb
--- /dev/null
+++ "b/10\351\231\210\346\230\212\347\253\245/\344\275\234\344\270\232/22.10.7.sql"
@@ -0,0 +1,88 @@
+--1. ����洢����ʵ�ֲ�ѯ���˻������͵����п��˻���Ϣ,��ʾ���п��ţ��������˻����
+create proc proc_MinMoneyCard
+as
+begin
+--
+select top 1 CardNo �����,RealName ����,CardMoney ���
+from BankCard inner join AccountInfo on BankCard.AccountId = AccountInfo.AccountId
+order by CardMoney asc
+end
+go
+--2. ģ�����п���Ǯ�������������п��ţ���Ǯ��ʵ�ִ�Ǯ����
+create proc proc_CunQian
+@CardNo varchar(30),
+@MoneyInBank money
+as
+update BankCard set CardMoney = CardMoney + @MoneyInBank where CardNo = @CardNo
+insert into CardExchange(CardNo,MoneyInBank,MoneyOutBank,ExchangeTime)
+values(@CardNo,@MoneyInBank,0,GETDATE())
+go
+--
+exec proc_CunQian '6225125478544587',3000
+
+--3. ģ�����п�ȡǮ�������������п��ţ�ȡǮ��ʵ��ȡǮ������ȡǮ�ɹ�������1��ȡǮʧ�ܷ���-1
+Create proc proc_Quqian
+    @CardNo carchar(30)
+    @money money
+As
+    -- �����޸����IJ���
+    Update BankCard set CardMoney = CardMoney - @money
+    Where CardNo = @CardNo
+    -- ����д����򷵻�-1
+    -- �ڴ洢�����У�return ��������д��붼����ִ��
+    If @@ERROR <>0
+    Return -1
+    Insert into CardExchange(CardNo, MoneyInBank, MoneyOutBank, ExchangeTime)
+    Values(@CardNo, 0, @money, getdate())
+    Return 1
+Go
+--4. **��ѯ��ijʱ��ε����д�ȡ����Ϣ�Լ�����ܽ��**��ȡ���ܽ�
+--���뿪ʼʱ�䣬����ʱ�䣬��ʾ��ȡ�����Ϣ��ͬʱ�����ش���ܽ�ȡ���ܽ�
+create proc GetMoneyByTime
+@startTime smalldatetime,
+@endTime smalldatetime,
+@TotalSaveMoney money output,
+@TotalWithdrawMoney money output
+as
+begin
+	select @TotalSaveMoney = sum(MoneyInBank),@TotalWithdrawMoney=sum(MoneyOutBank) from cardExchange
+	where ExchangeTime between @startTime and @endTime
+end
+
+--
+declare @startTime smalldatetime = '2022-09-07',@endTime smalldatetime = '2022-09-18'
+declare @TotalSaveMoney money,@TotalWithdrawMoney money
+exec GetMoneyByTime @startTime,@endTime,@TotalSaveMoney output , @TotalWithdrawMoney output
+select @TotalSaveMoney ����ܶ�,@TotalWithdrawMoney ȡ���ܶ�
+--5. **��������**�������û��������룬����û���������ȷ���������볤��<8���Զ�������8λ����
+--(��ʾ��������� 0-9 �������� float(rand()*10))  rand():�������0.0-1.0��С�� float:����ȡ����
+select FLOOR(RAND()*10) --0-9֮�������
+create proc procPwdUpgrade
+@cardno nvarchar(20),
+@pwd nvarchar(20) output
+as
+	if not exists(select * from BankCard where CardNo=@cardno and CardPwd=@pwd)
+		set @pwd = ''
+	else
+	begin
+		if len(@pwd) < 8
+		begin
+			declare @len int = 8- len(@pwd)
+			declare @i int = 1
+			while @i <= @len
+			begin
+				
+				set @pwd = @pwd + cast(FLOOR(RAND()*10) as varchar(1))
+				set @i = @i+1
+			end
+			update BankCard set CardPwd = @pwd where CardNo=@cardno
+		end
+	end
+go
+
+
+
+--���ã�������������ʼֵ�����������������
+declare @pwd nvarchar(20) = '123456'
+exec procPwdUpgrade '6225547854125656',@pwd output
+select @pwd
\ No newline at end of file
diff --git "a/10\351\231\210\346\230\212\347\253\245/\344\275\234\344\270\232/22.9.30.sql" "b/10\351\231\210\346\230\212\347\253\245/\344\275\234\344\270\232/22.9.30.sql"
new file mode 100644
index 0000000000000000000000000000000000000000..ecf149e02e18bfe597266fa40308f0bcb729a1d4
--- /dev/null
+++ "b/10\351\231\210\346\230\212\347\253\245/\344\275\234\344\270\232/22.9.30.sql"
@@ -0,0 +1,116 @@
+--��3��ʹ���α�ʵ�ּ�н����
+use test_trigger
+select * from People
+
+
+		--- 1.�����α�
+		-- 1.1�����α�  (scroll)
+declare cur_UpdateSalaryById cursor scroll
+for select PeopleId from People
+
+		-- 2.���α�
+open cur_UpdateSalaryById
+			-- 3 ʹ���α�
+			--���������������α�Żص�ֵ �� ��ż�нֵ
+declare @id int
+declare @money money = 1000
+			-- ע����� ʹ�ñ����洢�α�ֵ�ĸ�ʽ fetch ... from �α��� into ������
+fetch first from cur_UpdateSalaryById into @id
+			--@@fetch_status  = 0  : ������һ��   -1: ��ȡʧ��   -2:��ȡ�հ���
+			-- ÿ�˶���н1000
+while(@@fetch_status = 0)
+	begin
+		update People set PeopleSalary += @money where PeopleId = @id
+		print cast(@id as varchar(12)) + char(9) + cast(@money as varchar(20))
+		fetch next from cur_UpdateSalaryById into @id
+	end
+
+			-- 4.�ر��α�
+close cur_UpdateSalaryById
+
+			-- 5.�ͷű���
+deallocate cur_UpdateSalaryById
+
+--��4:ʹ���α�ɾ�������Ա��  market�������ֶΣ�
+go
+ select * from People
+ alter table People add market varchar(20) 
+update People set market = '1000' where  PeopleId = 1 
+update People set market = '1500' where  PeopleId = 2 
+update People set market = '2000' where  PeopleId = 6 
+
+
+declare cur_DropMarketById cursor scroll
+for select PeopleId from People 
+
+open cur_DropMarketById
+
+declare @id int 
+declare @Mk varchar(20) = ''
+fetch first from cur_DropMarketById into @id
+
+while(@@FETCH_STATUS = 0)
+	begin
+		set @Mk = (select market from People where PeopleId = @id)
+		if(@Mk <= 1000)
+			delete from People where PeopleId = @id
+		else
+			fetch next from cur_DropMarketById into @id
+	end
+close cur_DropMarketById
+deallocate cur_DropMarketById
+
+-- ������
+-- ****************************************************************************************
+go
+create table A(
+	id int primary key,
+	Province varchar(20),
+	City varchar(20)
+)
+
+create table B(
+	id int primary key,
+	Province varchar(20),
+	City varchar(20)
+)
+
+insert into A values(1,'����','����')
+insert into A values(2,'�㶫','����')
+insert into A values(3,'����','����')
+insert into A values(4,'����','����')
+
+insert into B values(1,'����','�ϲ�')
+insert into B values(3,'����','�Ͼ�')
+insert into B values(5,'����','�人')
+insert into B values(7,'����','��ɳ')
+
+--Ҫ��ʹ���α� ʵ��:���A����B����ID�ֶ�ֵ��ͬ����ô��B���е�ʡ�ݣ����� �޸ij���A���еij���һ�£�������
+select * from A
+select * from B
+
+
+declare cur_tempid cursor scroll
+for select A.* from A join B on B.id = A.id
+
+open cur_tempid
+
+
+declare @id int
+declare @Province varchar(20) 
+declare @City varchar(20) 
+
+fetch first from cur_tempid into @id,@Province,@City
+
+
+while(@@FETCH_STATUS = 0)
+	begin
+		update B set Province = @Province where id = @id	
+		update B set City = @City where id = @id			
+		fetch next from cur_tempid into @id,@Province,@City
+ end
+
+
+close cur_tempid
+
+deallocate cur_tempid
diff --git "a/10\351\231\210\346\230\212\347\253\245/\347\254\224\350\256\260/22.10.6\345\207\275\346\225\260.md" "b/10\351\231\210\346\230\212\347\253\245/\347\254\224\350\256\260/22.10.6\345\207\275\346\225\260.md"
new file mode 100644
index 0000000000000000000000000000000000000000..4c01b0528d68bf5fbd7a0fb3cd1fbc879b3266d7
--- /dev/null
+++ "b/10\351\231\210\346\230\212\347\253\245/\347\254\224\350\256\260/22.10.6\345\207\275\346\225\260.md"
@@ -0,0 +1,109 @@
+函数分为（1）系统函数:，（2）自定义函数(方法：将一个功能封装成可重用的函数)。
+
+其中自定义函数又可以分为（1）标量值函数（返回单个值），（2）表值函数（返回查询结果）
+
+本文主要介绍自定义函数的使用。
+
+标量值函数
+语法结构：
+
+CREATE  FUNCTION  function_name(@parameter_name   parameter_data_type) --（@参数名 参数的数据类型）
+RETURNS date_type   --返回返回值的数据类型
+
+[AS]
+
+BEGIN
+
+  function_body --函数体
+
+  RETURN  表达式;  --必须要有的
+
+END
+定义函数要求实现:
+
+实现两个值的加和
+
+使用函数求某门课的平均成绩
+
+表值函数
+语法结构:
+
+create function 名称
+
+([{@参数名称 参数类型[=默认值]}[,n]])
+
+returns @局部变量 table（参数名 参数类型）
+
+[with encryption]
+
+[as]
+
+begin
+
+函数体
+
+return 函数返回值
+
+end
+删除自定义函数
+
+DROP function 函数名
+例题：
+
+--（1）编写一个函数求该银行的金额总和
+use BankTest
+go
+create function func_GetBankMoneyByAccId()
+returns money
+as
+begin
+	declare @SumBankMoney money
+	select @SumBankMoney =(select sum(CardMoney ) from BankCard)	
+	return @SumBankMoney 
+end
+go
+
+
+select dbo.func_GetBankMoneyByAccId() as 银行金额总和
+
+
+--（2）传入账户编号，返回账户真实姓名
+go
+create function func_GetInfoByAcco_Id(@id int)
+returns varchar(40)
+as
+begin
+	declare @name varchar(40)
+	select @name = (select RealName from AccountInfo where AccountId = @id)
+	return @name
+end
+go
+
+select dbo.func_GetInfoByAcco_Id( 2 ) as 姓名
+
+
+--（3）传递开始时间和结束时间，返回交易记录（存钱取钱），交易记录中包含 真实姓名，卡号，存钱金额，取钱金额，交易时间。
+
+--方案一（逻辑复杂，函数内容除了返回结果的sql语句还有其他内容，例如定义变量等）：
+
+go
+create function func_GetCardExchangeByOpenTimeAndEndTime(@OpenTime smalldatetime,@EndTime smalldatetime)
+returns @ExchangTable table(
+	Name varchar(30),
+	CardNo varchar(50),
+	MoneyInBank money,
+	MoneyOutBank money,
+	ExchangeTime smalldatetime
+)
+as
+begin
+	insert into @ExchangTable
+	select A.RealName,CE.CardNo,CE.MoneyInBank,CE.MoneyOutBank,CE.ExchangeTime from CardExchange CE 
+	join BankCard B on B.CardNo = CE.CardNo
+	join AccountInfo A on A.AccountId = B.AccountId
+	where A.OpenTime = @OpenTime and CE.ExchangeTime = @EndTime
+	return
+end
+go
+
+select * from func_GetCardExchangeByOpenTimeAndEndTime('2022-09-19 22:37:00','2022-09-19 22:37:00')
\ No newline at end of file
diff --git "a/10\351\231\210\346\230\212\347\253\245/\347\254\224\350\256\260/22.10.7\345\255\230\345\202\250\350\277\207\347\250\213.md" "b/10\351\231\210\346\230\212\347\253\245/\347\254\224\350\256\260/22.10.7\345\255\230\345\202\250\350\277\207\347\250\213.md"
new file mode 100644
index 0000000000000000000000000000000000000000..a8ffd539decb47a4fb1561743fffe3b8baa631f0
--- /dev/null
+++ "b/10\351\231\210\346\230\212\347\253\245/\347\254\224\350\256\260/22.10.7\345\255\230\345\202\250\350\277\207\347\250\213.md"
@@ -0,0 +1,163 @@
+--execute:执行
+exec sp_databases  --查看所有数据库
+
+exec sp_tables  --查看所有
+
+exec sp_columns  course
+
+
+exec sp_password '123456','654321'
+
+
+use studenttest 
+go
+--没有输入，输出参数      procedure
+--1.  定义存储过程查询学生姓名,年龄最小的学生信息 
+create proc proc_GetMinAge
+as
+begin
+	select stuname, stuage  from stuinfo where stuage = (select min(stuage) from stuinfo)
+end
+
+
+--drop procedure proc_GetMinAge
+
+exec proc_GetMinAge
+
+
+--2.有输入参数，无输出参数，
+--  定义存储过程查询学生信息
+go
+create proc proc_GetMinAgeByName
+@stuName varchar(20)
+as
+begin
+	select *  from stuinfo where stuname=@stuName
+end
+go
+
+exec proc_GetMinAgeByName '张三丰'
+
+--3.有输入参数，无输出参数， 有返回值:只返回 整型数据           函数：1.返回标量值（任意数据类型） 2.表值函数（返回一张表）
+go
+create proc proc_GetMinAgeById
+@stuNo varchar(20)
+as
+begin
+	declare @age int
+	select @age=stuage  from stuinfo where stuNo=@stuNo
+	set @stuNo = 'S2022'
+	return @age
+end
+go
+
+--drop procedure proc_GetMinAgeById
+
+--定义@age接收返回的值
+declare @age int
+declare @stuid varchar(20) = 's2001'
+exec @age = proc_GetMinAgeById @stuid
+print @age
+print @stuid
+
+
+
+--传入学生学号，返回姓名
+go
+create proc proc_GetMinAgeBystuid
+@stuid varchar(20)
+as
+begin
+	declare @stuName varchar(20)
+	select @stuName=stuname  from stuinfo where stuNo=@stuid
+	--返回的类型是 非整型数据类型  此存储过程无效
+	return @stuname
+end
+go
+
+--外部
+declare @name varchar(20)
+exec @name = proc_GetMinAgeBystuid 'S2001'
+print @name
+
+
+
+--4.有输入参数，有输出参数（引用数据类型）
+--输入学号(stunum)，定义存储过程实现输出学生信息 name school major
+use STUDENTS
+go
+
+
+create proc proc_GetStuInfoById
+@stuNum varchar(20),
+@name varchar(20) output, --输出参数
+@school varchar(20) output,
+@major varchar(20) output
+as
+begin
+	select @name=name, @school=school,@major=major from tb_student where stu_num=@stunum
+end
+
+--定义四个变量
+declare @stunum varchar(20) = '16130203'
+declare @name varchar(20),@school varchar(20),@major varchar(20)
+
+exec proc_GetStuInfoById @stunum,@name output, @school output , @major output
+print @name + char(9) + @school + char(9) + @major
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+--5.一个变量同时具备输入，输出参数的存储过程
+go
+create proc proc_GetMinAgeBystuNo
+@stuNo varchar(20) output  --output代表是输出参数
+as
+begin
+	declare @age int
+	set @stuNo = 'S2022'
+end
+go
+
+declare @stuno varchar(20) = 'S2001'
+
+exec proc_GetMinAgeBystuNo @stuno output
+print @stuno
+
+
+--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。
+use BankTest
+go
+
+select * from cardExchange
+
+
+create proc GetMoneyByTime
+@startTime smalldatetime,
+@endTime smalldatetime,
+@TotalSaveMoney money output,
+@TotalWithdrawMoney money output
+as
+begin
+	select @TotalSaveMoney = sum(MoneyInBank),@TotalWithdrawMoney=sum(MoneyOutBank) from cardExchange
+	where ExchangeTime between @startTime and @endTime
+end
+
+--
+declare @startTime smalldatetime = '2022-09-07',@endTime smalldatetime = '2022-09-18'
+declare @TotalSaveMoney money,@TotalWithdrawMoney money
+exec GetMoneyByTime @startTime,@endTime,@TotalSaveMoney output , @TotalWithdrawMoney output
+select @TotalSaveMoney 存款总额,@TotalWithdrawMoney 取款总额
\ No newline at end of file
diff --git "a/10\351\231\210\346\230\212\347\253\245/\347\254\224\350\256\260/22.9.30\346\270\270\346\240\207.md" "b/10\351\231\210\346\230\212\347\253\245/\347\254\224\350\256\260/22.9.30\346\270\270\346\240\207.md"
new file mode 100644
index 0000000000000000000000000000000000000000..d00781fdbca2b089819018ff6b52f4ebb1cfe1bd
--- /dev/null
+++ "b/10\351\231\210\346\230\212\347\253\245/\347\254\224\350\256\260/22.9.30\346\270\270\346\240\207.md"
@@ -0,0 +1,65 @@
+游标
+什么是游标
+游标(Cursor)它使用户可逐行访问由SQL Server返回的结果集。使用游标(cursor)的一个主要的原因就是把集合操作转换成单个记录处理方式。用SQL语言从数据库中检索数据后，结果放在内存的一块区域中，且结果往往是一个含有多个记录的集合。游标机制允许用户在SQL server内逐行地访问这些记录，按照用户自己的意愿来显示和处理这些记录。
+
+游标分类:
+
+（1）静态游标(Static)：在操作游标的时候，数据发生变化，游标中数据不变 （2）动态游标(Dynamic)：在操作游标的时候，数据发生变化，游标中数据改变，默认值。 （3）键集驱动游标(KeySet)：在操作游标的时候，被标识的列发生改变，游标中数据改变，其他列改变，游标中数据不变。
+
+游标的使用
+创建游标：
+
+--1.创建游标(Scroll代表滚动游标，不加Scroll则是只进的，只能支持fetch next)
+declare <游标名> cursor scroll for select stuname from stuinfo
+打开游标：
+
+open  <游标名>
+关闭游标：
+
+close <游标名>
+释放游标：
+
+deallocate <游标名>
+提取数据操作：
+
+fetch first from <游标名> --结果集的第一行
+fetch last from <游标名>  --最后一行
+fetch absolute 1 from <游标名> --从游标的第一行开始数，第n行。
+fetch relative 3 from <游标名> --从当前位置数，第n行。
+fetch next from <游标名> --当前位置的下一行
+fetch prior from <游标名> --当前位置的上一行
+例子：
+
+使用游标实现加薪操作
+use test_trigger
+select * from People
+
+
+		--- 1.声明游标
+		-- 1.1滚动游标  (scroll)
+declare cur_UpdateSalaryById cursor scroll
+for select PeopleId from People
+
+		-- 2.打开游标
+open cur_UpdateSalaryById
+			-- 3 使用游标
+			--声明变量来接受游标放回的值 与 存放加薪值
+declare @id int
+declare @money money = 1000
+			-- 注意事项： 使用变量存储游标值的格式 fetch ... from 游标名 into 变量名
+fetch first from cur_UpdateSalaryById into @id
+			--@@fetch_status  = 0  : 还有下一行   -1: 提取失败   -2:提取空白行
+			-- 每人都加薪1000
+while(@@fetch_status = 0)
+	begin
+		update People set PeopleSalary += @money where PeopleId = @id
+		print cast(@id as varchar(12)) + char(9) + cast(@money as varchar(20))
+		fetch next from cur_UpdateSalaryById into @id
+	end
+
+			-- 4.关闭游标
+close cur_UpdateSalaryById
+
+			-- 5.释放变量
+
+deallocate cur_UpdateSalaryById
\ No newline at end of file