diff --git "a/\346\235\250\345\207\214\347\277\224 22/.keep" "b/\346\235\250\345\207\214\347\277\224 22 01/.keep"
similarity index 100%
rename from "\346\235\250\345\207\214\347\277\224 22/.keep"
rename to "\346\235\250\345\207\214\347\277\224 22 01/.keep"
diff --git "a/\346\235\250\345\207\214\347\277\224 22/\346\235\250\345\207\214\347\277\224 22/\344\275\234\344\270\232/student.sql" "b/\346\235\250\345\207\214\347\277\224 22 01/\346\235\250\345\207\214\347\277\224 22/\344\275\234\344\270\232/student.sql"
similarity index 100%
rename from "\346\235\250\345\207\214\347\277\224 22/\346\235\250\345\207\214\347\277\224 22/\344\275\234\344\270\232/student.sql"
rename to "\346\235\250\345\207\214\347\277\224 22 01/\346\235\250\345\207\214\347\277\224 22/\344\275\234\344\270\232/student.sql"
diff --git "a/\346\235\250\345\207\214\347\277\224 22/\346\235\250\345\207\214\347\277\224 22/\347\254\224\350\256\260/2020-9-16-\345\273\272\345\272\223\345\273\272\350\241\250.md" "b/\346\235\250\345\207\214\347\277\224 22 01/\346\235\250\345\207\214\347\277\224 22/\347\254\224\350\256\260/2020-9-16-\345\273\272\345\272\223\345\273\272\350\241\250.md"
similarity index 100%
rename from "\346\235\250\345\207\214\347\277\224 22/\346\235\250\345\207\214\347\277\224 22/\347\254\224\350\256\260/2020-9-16-\345\273\272\345\272\223\345\273\272\350\241\250.md"
rename to "\346\235\250\345\207\214\347\277\224 22 01/\346\235\250\345\207\214\347\277\224 22/\347\254\224\350\256\260/2020-9-16-\345\273\272\345\272\223\345\273\272\350\241\250.md"
diff --git "a/\346\235\250\345\207\214\347\277\224 22 02/.keep" "b/\346\235\250\345\207\214\347\277\224 22 02/.keep"
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git "a/\346\235\250\345\207\214\347\277\224 22 02/\344\275\234\344\270\232/test.sql" "b/\346\235\250\345\207\214\347\277\224 22 02/\344\275\234\344\270\232/test.sql"
new file mode 100644
index 0000000000000000000000000000000000000000..03d5e5a27505b6c735a0fae8a738def39adc5205
--- /dev/null
+++ "b/\346\235\250\345\207\214\347\277\224 22 02/\344\275\234\344\270\232/test.sql"	
@@ -0,0 +1,65 @@
+--1. 查询出武汉地区所有的员工信息，要求显示部门名称以及员工的详细资料
+
+select * from People 
+inner join Department on People.DepartmentId=Department.DepartmentId
+where PeopleAddress='武汉'
+
+--2. 查询出武汉地区所有的员工信息，要求显示部门名称，职级名称以及员工的详细资料
+
+select * from People 
+inner join Department on People.DepartmentId=Department.DepartmentId
+inner join Rank on People.RankId=Rank.RankId
+where PeopleAddress ='武汉' 
+
+--3. 根据部门分组统计员工人数，员工工资总和，平均工资，最高工资和最低工资。
+
+select  DepartmentName,COUNT(People.DepartmentId)人数,SUM(PeopleSalary)工资总和,AVG(PeopleSalary)平均工资,MAX(PeopleSalary)最高工资,MIN(PeopleSalary)最低工资 from People 
+inner join Department on People.DepartmentId=Department.DepartmentId
+group by DepartmentName
+
+--4. 根据部门分组统计员工人数，员工工资总和，平均工资，最高工资和最低工资，平均工资在10000 以下的不参与统计，并且根据平均工资降序排列。
+
+select  DepartmentName,COUNT(People.DepartmentId)人数,SUM(PeopleSalary)工资总和,AVG(PeopleSalary)平均工资,MAX(PeopleSalary)最高工资,MIN(PeopleSalary)最低工资 from People 
+inner join Department on People.DepartmentId=Department.DepartmentId
+group by DepartmentName
+having AVG(PeopleSalary)>=10000
+order by AVG(PeopleSalary) desc
+
+--5. 根据部门名称，然后根据职位名称，分组统计员工人数，员工工资总和，平均工资，最高工资和最低工资
+
+select  DepartmentName,RankId,COUNT(People.DepartmentId)人数,SUM(PeopleSalary)工资总和,AVG(PeopleSalary)平均工资,MAX(PeopleSalary)最高工资,MIN(PeopleSalary)最低工资 from People 
+inner join Department on People.DepartmentId=Department.DepartmentId
+group by RankId,DepartmentName
+
+--6.查询出巨蟹 6.22--7.22 的员工信息
+
+select * from People where MONTH(PeopleBirth)+CONVERT(float,DAY(PeopleBirth))/100 between 6.22 and 7.22
+
+--7.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 
+	when year(PeopleBirth)%12 =0 
+	then '猴'
+	when YEAR(PeopleBirth)%12=1
+	then '鸡'
+	when YEAR(PeopleBirth)%12=2
+	then '狗'
+	when YEAR(PeopleBirth)%12=3
+	then '猪'
+	when YEAR(PeopleBirth)%12=4
+	then '鼠'
+	when YEAR(PeopleBirth)%12=5
+	then '牛'
+	when YEAR(PeopleBirth)%12=6
+	then '虎'
+	when YEAR(PeopleBirth)%12=7
+	then '兔'
+	when YEAR(PeopleBirth)%12=8
+	then '龙'
+	when YEAR(PeopleBirth)%12=9
+	then '蛇'
+	when YEAR(PeopleBirth)%12=10
+	then '马'
+	when YEAR(PeopleBirth)%12=11
+	then '羊'
+	end 生肖  from People	
\ No newline at end of file
diff --git "a/\346\235\250\345\207\214\347\277\224 22 02/\347\254\224\350\256\260/2022-09-18-\347\206\237\346\202\211\350\257\255\346\263\225.md" "b/\346\235\250\345\207\214\347\277\224 22 02/\347\254\224\350\256\260/2022-09-18-\347\206\237\346\202\211\350\257\255\346\263\225.md"
new file mode 100644
index 0000000000000000000000000000000000000000..e77da7d8de17b8bfb3df1ff75ca395f36c837245
--- /dev/null
+++ "b/\346\235\250\345\207\214\347\277\224 22 02/\347\254\224\350\256\260/2022-09-18-\347\206\237\346\202\211\350\257\255\346\263\225.md"	
@@ -0,0 +1,5 @@
+掌握了以下2个MS SQL的新语法
+
+identify	识别列
+
+check		检查条件
\ No newline at end of file