diff --git "a/09\346\235\216\346\266\233/2022-09-30\357\274\210\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232\357\274\211/.keep" "b/09\346\235\216\346\266\233/2022-09-30\357\274\210\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232\357\274\211/.keep"
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git "a/09\346\235\216\346\266\233/2022-09-30\357\274\210\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232\357\274\211/\346\270\270\346\240\207\347\254\224\350\256\260.txt" "b/09\346\235\216\346\266\233/2022-09-30\357\274\210\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232\357\274\211/\346\270\270\346\240\207\347\254\224\350\256\260.txt"
new file mode 100644
index 0000000000000000000000000000000000000000..c93158ac5ebc886d75e9ac67655f68d59c56fa39
--- /dev/null
+++ "b/09\346\235\216\346\266\233/2022-09-30\357\274\210\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232\357\274\211/\346\270\270\346\240\207\347\254\224\350\256\260.txt"
@@ -0,0 +1,53 @@
+## 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：**
+
+```sql
+--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：**
+
+```sql
+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：**
+
+```sql
+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
+```
diff --git "a/09\346\235\216\346\266\233/2022-09-30\357\274\210\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232\357\274\211/\350\257\276\345\240\202\346\241\210\344\276\213.sql" "b/09\346\235\216\346\266\233/2022-09-30\357\274\210\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232\357\274\211/\350\257\276\345\240\202\346\241\210\344\276\213.sql"
new file mode 100644
index 0000000000000000000000000000000000000000..2a2aa8811fc111beaea2e3812beb6e1e10a9eefa
--- /dev/null
+++ "b/09\346\235\216\346\266\233/2022-09-30\357\274\210\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232\357\274\211/\350\257\276\345\240\202\346\241\210\344\276\213.sql"
@@ -0,0 +1,180 @@
+--�������ԣ�ԭ���ԣ�һ���ԣ������ԣ��־���
+--�����4�����뼶��
+--     ��δ�ύ�� ����������ظ������ö�
+--     �����ύ�� �����ظ������ö�
+--	   ���ظ���:   ���ֻö�
+--     ���л�
+dbcc useroptions
+
+
+
+--�α�:���ڴ洢������
+use test_trigger
+go
+
+
+
+
+
+
+select * from People
+--���ã��Է��صĽ�����е�ÿһ�н��е�������
+--
+--create index
+--create view
+
+--�����α�
+--ֻ���α꣺�α��е�����ֻ�����²�ѯ�����ܲ�֮ǰ������
+--�����α�  (scroll)������������ʱ��ָ������һ������
+declare cur_UpdateSalaryById cursor scroll
+for select PeopleId from People
+
+--�ȴ�
+open cur_UpdateSalaryById
+
+--ȡ����:
+--next:��һ��
+--prior����һ��
+--first:��һ��
+--last�����һ��
+--absolute n�����Եĵ�n��
+--relative n: ��Ե�
+
+
+--ѭ����㣺first    �յ㣺���һ��(����ж�)        ѭ���壺update
+
+--@@fetch_status  = 0  : ������һ��   -1: ��ȡʧ��   -2:��ȡ�հ���
+
+
+
+declare @id int
+declare @mon money =1000
+fetch first from cur_UpdateSalaryById into @id
+while(@@FETCH_STATUS = 0)
+	begin
+		--��Ǯ
+		update people set PeopleSalary -=@mon where PeopleId=@id
+		--��ӡ
+		print cast(@id as varchar(2) ) + char(9) + cast (@mon as varchar(10))
+		set @mon += 1000
+		--��ȡ��һ��
+		fetch next from cur_UpdateSalaryById into @id
+	end
+
+
+--����ر�
+close cur_UpdateSalaryById
+
+
+--�ͷ�
+deallocate cur_UpdateSalaryById
+
+
+--��1��ʹ���α�������ű��Ϊ009��Ա���͹���
+--1.����
+declare cur_OutputPeopleById cursor scroll
+for select PeopleID,PeopleName,PeopleSalary from People
+--2.��
+open cur_OutputPeopleById
+--3.ʹ��
+declare @peopleid varchar(5), @name varchar(20), @salary varchar(10)
+fetch first from cur_OutputPeopleById into @peopleid,@name,@salary
+while(@@FETCH_STATUS = 0)
+	if(@peopleid = 6)
+		begin
+			--��ӡ
+			print @peopleid + char(9) + @name + char(9) + @salary
+			break
+		end
+	else
+		fetch next from cur_OutputPeopleById into @peopleid,@name,@salary
+
+
+select * from People
+
+
+
+
+
+
+
+
+
+
+deallocate cur_OutputPeopleById
+
+
+--ʹ���α���������ŵIJ��źţ���߹��ʣ���͹���
+select * from People
+--deallocate cur_GetSalaryById
+declare cur_GetSalaryById cursor scroll
+for select Departmentid,PeopleSalary from People 
+
+open cur_GetSalaryById
+
+declare @departmentid varchar(10)
+fetch first from cur_GetSalaryById into @departmentid,@salary
+while(@@FETCH_STATUS = 0)
+	begin
+		declare @maxSalary varchar(20), @minSalary varchar(20)
+		--����������нˮ
+		--select @maxSalary= peoplesalary ,@minsalary = PeopleSalary from People
+		
+	end
+
+--��3��ʹ���α�ʵ�ּ�н����
+--�����α�
+declare cur_id cursor scroll for select PeopleId from People
+--���α�
+open cur_id
+--��ȡ����
+declare @id int, @money money = 1000
+fetch first from cur_id into @id
+while (@@fetch_status = 0)
+	begin
+		update People set PeopleSalary += @money where PeopleId = @id
+		fetch next from cur_id into @id
+	end
+--�ر��α�
+close cur_id
+select * from People
+go
+
+--��4:ʹ���α�ɾ�������Ա��
+select * from People
+--����
+declare cur_id cursor scroll for select PeopleId,PeopleSalary from People
+--��
+open cur_id
+--��ȡ
+declare @id int, @money money
+fetch first from cur_id into @id,@money
+while(@@FETCH_STATUS = 0)
+	begin
+		if(@money < 10000)
+		begin
+			delete People where PeopleId = @id
+			fetch next from cur_id into @id,@money
+		end
+		else
+			fetch next from cur_id into @id,@money
+	end
+close cur_id
+select * from People
+go
+--ʹ���α� ʵ��:���A����B����ID�ֶ�ֵ��ͬ����ô��B���е�ʡ�ݣ����� �޸ij���A���еij���һ�£�������
+
+declare cur_id cursor scroll for select A.* from A inner join B on A.id = B.id
+deallocate cur_id
+open cur_id
+declare @id int , @id1 int,@Province varchar(10),@City varchar(10)
+fetch first from cur_id into @id,@Province,@City
+while(@@FETCH_STATUS = 0)
+	begin
+			update B set B.Province = @Province , B.City = @City where B.id = @id
+			fetch next from cur_id into @id,@Province,@City
+	end
+		
+close cur_id
+select * from A
+select * from B
\ No newline at end of file