diff --git "a/10\344\275\231\351\207\221\346\230\237/8.29-\345\273\272\345\272\223\345\273\272\350\241\250\347\273\203\344\271\240.md" "b/10\344\275\231\351\207\221\346\230\237/8.29-\345\273\272\345\272\223\345\273\272\350\241\250\347\273\203\344\271\240.md"
new file mode 100644
index 0000000000000000000000000000000000000000..e248dee3696f9efec56dd10c866f88d747492e3a
--- /dev/null
+++ "b/10\344\275\231\351\207\221\346\230\237/8.29-\345\273\272\345\272\223\345\273\272\350\241\250\347\273\203\344\271\240.md"
@@ -0,0 +1,57 @@
+```sql
+create database DBTEST
+go
+use DBTEST
+go
+--部门信息表
+create table sectionInfo(
+sectionID  int primary key identity(1,1),--部门编号
+sectionName  varchar(10) not null --部门名称
+)
+go
+insert sectionInfo 
+values('人事部'),
+	  ('行政部'),
+	  ('财会部'),
+	  ('安全部'),
+	  ('销售部')
+go
+--员工信息表
+create table userInfo(
+userNo int primary key identity(1,1) not null,--员工编号
+userName varchar(10) unique not null check(len(userName)>4),--员工姓名
+userSex  varchar(2) not null check(userSex='男'or userSex='女'),--员工性别
+userAge int not null check(userAge between 1 and 100),--员工年龄
+userAddress varchar(50) default('湖北'),--员工地址
+userSection int references sectionInfo(sectionID)--员工部门
+)
+go
+insert userInfo
+values('小小小灿芳','男',20,'福建',2),
+	  ('两年半的羿','男',20,'福建',4),
+	  ('羿的铁杆粉','男',20,'福建',5)
+insert userInfo(userName,userSex,userAge,userSection)
+values('asdzxc','男',20,3),
+	  ('aaaaaaaaaa','男',20,1)
+go
+--员工考勤表
+create table workInfo(
+workId int primary key identity(1,1) not null,--考勤编号
+userId int references userInfo(userNo) not null,--考勤员工
+workTime datetime not null,--考勤时间
+workDescription varchar(40) not null check(workDescription='迟到'or workDescription='早退'or workDescription='旷工' 
+or workDescription='病假' or workDescription='事假')--考勤说明
+)
+go
+insert workInfo
+values(2,'2022-8-29 10:44:00','事假'),
+	  (3,'2022-8-29 10:32:50','迟到'),
+	  (1,'2022-8-29 10:42:10','早退'),
+	  (5,'2022-8-29 10:01:30','旷工'),
+	  (4,'2022-8-29 10:55:16','病假')
+go
+select * from sectionInfo
+select * from userInfo
+select * from workInfo
+```
+
diff --git "a/10\344\275\231\351\207\221\346\230\237/8.30-\346\235\241\344\273\266\346\237\245\350\257\242\344\275\234\344\270\232.md" "b/10\344\275\231\351\207\221\346\230\237/8.30-\346\235\241\344\273\266\346\237\245\350\257\242\344\275\234\344\270\232.md"
new file mode 100644
index 0000000000000000000000000000000000000000..da55365fb57317acaf1e6bfe1cfd10bc340f62a7
--- /dev/null
+++ "b/10\344\275\231\351\207\221\346\230\237/8.30-\346\235\241\344\273\266\346\237\245\350\257\242\344\275\234\344\270\232.md"
@@ -0,0 +1,74 @@
+```sql
+use DBTEST
+
+--1. 根据指定列（姓名，性别，月薪，电话）查询性别为女的员工信息,并自定义中文列名
+select PeopleName 姓名,PeopleSex 性别,PeopleSalary 月薪,PeoplePhone 电话 from People  where PeopleSex='女'
+--2. 查询月薪大于等于10000 的员工信息( 单条件 )
+select * from People where PeopleSalary>=10000
+--3. 查询月薪大于等于10000 的女员工信息(多条件)
+select * from People where PeopleSalary>=10000 and PeopleSex='女'
+--4. 显示出出身年月在1980-1-1之后，而且月薪大于等于10000的女员工信息。
+select * from People where YEAR(PeopleBirth)>=1980 and PeopleSalary>=10000
+--5. 显示出月薪大于等于15000 的员工,或者月薪大于等于8000的女员工信息。
+select * from People where PeopleSalary>=15000 or PeopleSalary>=8000 
+--6. 查询月薪在10000-20000 之间员工信息( 多条件 )
+select * from People where PeopleSalary between 10000 and 20000
+--7. 查询出地址在北京或者上海的员工信息
+select * from People where PeopleAddress='北京' or PeopleAddress='上海'
+--8. 查询所有员工信息(根据工资排序，降序排列)
+select * from People
+order by PeopleSalary desc
+--9. 显示所有的员工信息，按照名字的长度进行倒序排列
+select * from People 
+order by len(PeopleName) desc
+--10. 查询工资最高的5个人的信息
+select top 5 * from People
+--11. 查询工资最高的10%的员工信息
+select top 10 percent * from People
+--12. 查询出地址没有填写的员工信息
+select * from People
+where PeopleAddress is null
+--13. 查询出地址已经填写的员工信息
+select * from People
+where PeopleAddress is not null
+--14. 查询所有的80后员工信息
+select * from People
+where YEAR(PeopleBirth)>=1980
+--15. 查询年龄在30-40 之间，并且工资在15000-30000 之间的员工信息
+select * from People
+where (year(GETDATE())-year(PeopleBirth)) between 30 and 40 and
+PeopleSalary between 15000 and 30000
+--16. 查询出巨蟹 6.22--7.22 的员工信息
+select * from People 
+where MONTH(PeopleBirth)=6 and DAY(PeopleBirth)>=22
+or 
+MONTH(PeopleBirth)=7 and DAY(PeopleBirth)<=22
+--17. 查询工资比赵云高的人
+select * from People
+where PeopleSalary>(select PeopleSalary from People where PeopleName='赵云')
+--18. 查询出和赵云在同一个城市的人
+select * from People
+where PeopleAddress=(select PeopleAddress from People where PeopleName='赵云')
+--19. 查询出生肖为鼠的人员信息
+select * from People 
+where year(PeopleBirth)%12 = 4
+--20. 查询所有员工信息，添加一列显示属相(鼠,牛,虎,兔,龙,蛇,马,羊,猴,鸡,狗,猪)
+select *,
+CASE year(peopleBirth)%12
+ when 4 then '鼠'
+ when 5 then '牛'
+ when 6 then '虎'
+ when 7 then '兔'
+ when 8 then '龙'
+ when 9 then '蛇'
+ when 10 then '马'
+ when 11 then '羊'
+ when 12 then '猴'
+ when 1 then '鸡'
+ when 2 then '狗'
+ when 3 then '猪'
+  else ''
+end 生肖
+from people
+```
+