diff --git "a/9.16\345\274\240\345\205\210\346\235\260/.keep" "b/9.16\345\274\240\345\205\210\346\235\260/.keep"
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git "a/9.16\345\274\240\345\205\210\346\235\260/\345\274\240\345\205\210\346\235\260/SQLQuery1\357\274\210\344\275\234\344\270\232\357\274\211.sql" "b/9.16\345\274\240\345\205\210\346\235\260/\345\274\240\345\205\210\346\235\260/SQLQuery1\357\274\210\344\275\234\344\270\232\357\274\211.sql"
new file mode 100644
index 0000000000000000000000000000000000000000..588e0980e03e3e5597022f44a37eff73fb21db28
--- /dev/null
+++ "b/9.16\345\274\240\345\205\210\346\235\260/\345\274\240\345\205\210\346\235\260/SQLQuery1\357\274\210\344\275\234\344\270\232\357\274\211.sql"
@@ -0,0 +1,53 @@
+--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 Department.DepartmentId,Department.DepartmentName,count(People.PeopleId) 员工人数,sum(PeopleSalary)
+总工资,avg(PeopleSalary) 平均工资,max(PeopleSalary) 最高工资,min(PeopleSalary) 最低工资 from People
+inner join Department on Department.DepartmentId =People.DepartmentId
+group by Department.DepartmentId,Department.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 Department.DepartmentId,Department.DepartmentName,count(People.PeopleId) 员工人数,sum(PeopleSalary)
+总工资,avg(PeopleSalary) 平均工资,max(PeopleSalary) 最高工资,min(PeopleSalary) 最低工资 from People
+inner join Department on Department.DepartmentId =People.DepartmentId
+group by Department.DepartmentId,Department.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 Department.DepartmentId,Rank.RankId,count(People.PeopleId) 员工人数,sum(PeopleSalary)
+总工资,convert(decimal(15,2),avg(PeopleSalary)) 平均工资,max(PeopleSalary) 最高工资,min(PeopleSalary) 最低工资 from People
+inner join Rank on People.RankId = Rank.RankId
+inner join Department on Department.DepartmentId = People.DepartmentId
+group by Department.DepartmentId,Rank.RankId,Department.DepartmentName,Rank.RankName;
+
+--6.查询出巨蟹 6.22--7.22 的员工信息
+select * from People
+where month(People.PeopleBirth) = 6 and day(People.PeopleBirth) >= 22 or month(People.PeopleBirth) = 7 and day(People.PeopleBirth) <=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 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 0 then '猴'
+	when 1 then '鸡'
+	when 2 then '狗'
+	when 3 then '猪'
+end 生肖
+from People;
\ No newline at end of file
diff --git "a/9.16\345\274\240\345\205\210\346\235\260/\345\274\240\345\205\210\346\235\260/\347\254\224\350\256\260.txt" "b/9.16\345\274\240\345\205\210\346\235\260/\345\274\240\345\205\210\346\235\260/\347\254\224\350\256\260.txt"
new file mode 100644
index 0000000000000000000000000000000000000000..623da83cf7f68091e81269b088060d02de8975f7
--- /dev/null
+++ "b/9.16\345\274\240\345\205\210\346\235\260/\345\274\240\345\205\210\346\235\260/\347\254\224\350\256\260.txt"
@@ -0,0 +1,141 @@
+# SQL SERVER
+
+## 1銆佸缓搴撳缓琛ㄥ嚱鏁�
+
+### 鏂板缓鏁版嵁搴�
+
+create database '鏁版嵁搴撳悕';
+
+### 鍒犻櫎鏁版嵁搴�
+
+drop database if exists '鏁版嵁搴撳悕';
+
+### 浣跨敤鏁版嵁搴�
+
+use 鏁版嵁搴撳悕;
+
+### 鏂板缓琛�
+
+create table '琛ㄥ悕' (
+
+ row_name 鏁版嵁绫诲瀷(闀垮害,灏忔暟鐐�) unique primary key auto_increment comment '涓婚敭'
+
+ row_name 鏁版嵁绫诲瀷(闀垮害,灏忔暟鐐�) default 榛樿鍊� not null comment '';
+
+ foreign key(`row_name`) references `table_name`(`row_name`)
+
+### 鍒犻櫎琛�
+
+drop database if exists '琛ㄥ悕';
+
+## 2銆佸鍒犳敼鏌�
+
+### 2.1銆佸熀鏈鍙�
+
+#### 鏌ヨ璁板綍
+
+```sql
+select * from `table_name`
+```
+
+#### 鍒犻櫎璁板綍
+
+```sql
+delete from `table_name`;
+delete from `table_name` where `row_name =  values;
+```
+
+#### 鏂板璁板綍
+
+```sql
+insert into `table_name` (`row_name1`,`row_name2`,...) values (value1,value2,...),(value1,value2,...);
+```
+
+### 2.2銆佹潯浠舵煡璇�
+
+#### SQL涓父鐢ㄨ繍绠楃
+
+```sql
+=锛氱瓑浜庯紝姣旇緝鏄惁鐩哥瓑鍙婅祴鍊�
+!=锛氭瘮杈冧笉绛変簬
+>锛氭瘮杈冨ぇ浜�
+<锛氭瘮杈冨皬浜�
+>=锛氭瘮杈冨ぇ浜庣瓑浜�
+<=锛氭瘮杈冨皬浜庣瓑浜�
+IS NULL锛氭瘮杈冧负绌�
+IS NOT NULL锛氭瘮杈冧笉涓虹┖
+in锛氭瘮杈冩槸鍚﹀湪鍏朵腑
+like锛氭ā绯婃煡璇�
+BETWEEN...AND...锛氭瘮杈冩槸鍚﹀湪涓よ�呬箣闂� 50-100   BETWEEN 50 AND 100
+and锛氶�昏緫涓庯紙涓や釜鏉′欢鍚屾椂鎴愮珛琛ㄨ揪寮忔垚绔嬶級
+or锛氶�昏緫鎴栵紙涓や釜鏉′欢鏈変竴涓垚绔嬭〃杈惧紡鎴愮珛锛� 
+not锛氶�昏緫闈烇紙鏉′欢鎴愮珛锛岃〃杈惧紡鍒欎笉鎴愮珛锛涙潯浠朵笉鎴愮珛锛岃〃杈惧紡鍒欐垚绔嬶級
+```
+
+#### 妯＄硦鏌ヨ
+
+妯＄硦鏌ヨ浣跨敤like鍏抽敭瀛楀拰閫氶厤绗︾粨鍚堟潵瀹炵幇锛岄�氶厤绗﹀叿浣撳惈涔夊涓嬶細
+
+```sql
+%锛氫唬琛ㄥ尮閰�0涓瓧绗︺��1涓瓧绗︽垨澶氫釜瀛楃銆�
+_锛氫唬琛ㄥ尮閰嶆湁涓斿彧鏈�1涓瓧绗︺��
+[]锛氫唬琛ㄥ尮閰嶈寖鍥村唴
+[^]锛氫唬琛ㄥ尮閰嶄笉鍦ㄨ寖鍥村唴
+```
+
+
+
+## 3銆丼QL鍑芥暟
+
+### case锛�
+
+CASE璇彞鏈変袱绉嶅舰寮忥細绗竴绉嶈瘎浼颁竴涓垨澶氫釜鏉′欢锛屽苟杩斿洖绗竴涓鍚堟潯浠剁殑缁撴灉銆� 濡傛灉娌℃湁鏉′欢鏄鍚堢殑锛屽垯杩斿洖ELSE瀛愬彞閮ㄥ垎鐨勭粨鏋滐紝濡傛灉娌℃湁ELSE閮ㄥ垎锛屽垯杩斿洖NULL锛�
+
+```sql
+CASE  
+    WHEN condition1 THEN result1  
+    WHEN condition2 THEN result2  
+    WHEN conditionN THEN resultN  
+    ELSE result  
+END;
+```
+
+绗簩绉岰ASE鍙ユ硶杩斿洖绗竴涓獀alue = compare_value姣旇緝缁撴灉涓虹湡鐨勭粨鏋溿�� 濡傛灉娌℃湁姣旇緝缁撴灉绗﹀悎锛屽垯杩斿洖ELSE鍚庣殑缁撴灉锛屽鏋滄病鏈塃LSE閮ㄥ垎锛屽垯杩斿洖NULL锛�
+
+```sql
+CASE compare_value  
+    WHEN condition1 THEN result1  
+    WHEN condition2 THEN result2  
+    WHEN conditionN THEN resultN  
+    ELSE result  
+END;
+```
+
+### 鑱氬悎鍑芥暟
+
+SQL SERVER涓仛鍚堝嚱鏁颁富瑕佹湁锛�
+
+    count:姹傛暟閲�
+    max:姹傛渶澶у��
+    min:姹傛渶灏忓��
+    sum:姹傚拰
+    avg:姹傚钩鍧囧��
+
+
+
+
+
+## SQL鎵ц椤哄簭
+
+```sql
+(7)     SELECT 
+(8)     DISTINCT <select_list>
+(1)     FROM <left_table>
+(3)     <join_type> JOIN <right_table>
+(2)     ON <join_condition>
+(4)     WHERE <where_condition>
+(5)     GROUP BY <group_by_list>
+(6)     HAVING <having_condition>
+(9)     ORDER BY <order_by_condition>
+(10)    LIMIT <limit_number>
+```
\ No newline at end of file