diff --git "a/01\347\277\201\347\253\240\345\275\254/\344\275\234\344\270\232/2022-09-05/.keep" "b/01\347\277\201\347\253\240\345\275\254/\344\275\234\344\270\232/2022-09-05/.keep"
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git "a/01\347\277\201\347\253\240\345\275\254/\344\275\234\344\270\232/2022-09-05/2022-9-05 \345\273\272\347\255\221\345\205\254\345\217\270-\345\261\200\351\203\250\345\217\230\351\207\217.sql" "b/01\347\277\201\347\253\240\345\275\254/\344\275\234\344\270\232/2022-09-05/2022-9-05 \345\273\272\347\255\221\345\205\254\345\217\270-\345\261\200\351\203\250\345\217\230\351\207\217.sql"
new file mode 100644
index 0000000000000000000000000000000000000000..d53c1696acfd114c0431d628d5cac7be82eafa61
--- /dev/null
+++ "b/01\347\277\201\347\253\240\345\275\254/\344\275\234\344\270\232/2022-09-05/2022-9-05 \345\273\272\347\255\221\345\205\254\345\217\270-\345\261\200\351\203\250\345\217\230\351\207\217.sql"	
@@ -0,0 +1,85 @@
+create database gc
+go
+use gc
+go
+--工程表
+create table gcb
+(
+gcid varchar(10) primary key,
+gcname varchar(20),
+)
+--职工表
+create table zgb
+(
+zgid int primary key,
+zgname varchar(20),
+
+)
+--职务表
+create table zwb
+(
+zw varchar(20) primary key,
+xsgzl int
+)
+--项目表
+create table xm
+(
+gcid varchar(20),
+zgid int references zgb(zgid),
+gtime int,
+gz decimal
+)
+--工程表
+insert gcb
+values ('A1','花园大厦'),
+('A2','立交桥'),
+('A3','临江饭店')
+--职工表
+insert zgb
+values (1001,'齐光明'),
+        (1002,'李思岐'),
+		(1003,'鞠明亮'),
+		(1004,'葛宇洪')
+--职务表
+insert zwb values 
+('工程师','65'),
+('技术员','60'),
+('律师','60'),
+('工人','55')
+--项目表
+insert xm values 
+('A1',1001,13,845.00),
+('A1',1002,16,960.00),
+('A1',1004,19,1140.00),
+('A2',1001,15,975.00),
+('A2',1003,17,935.00),
+('A3',1002,18,1080.00),
+('A4',1004,14,840.00)
+
+select * from gcb
+select * from zgb
+select * from zwb
+select * from xm
+
+--根据座位号找出张无忌的前后同学
+
+declare @id int
+
+select @id=StuSeat-1 from StuInfo where StuName='张无忌'
+
+print @id
+
+declare @id int
+
+select @id=StuSeat+1 from StuInfo where StuName='张无忌'
+
+print @id
+
+select * from StuInfo where StuSeat=@id+1 or StuSeat =@id-1
+
+--查询年龄最大的学生信息
+declare @age int
+
+select @age=max(stuage) from StuInfo
+
+print @age
\ No newline at end of file
diff --git "a/01\347\277\201\347\253\240\345\275\254/\347\254\224\350\256\260/2022-09-05.md" "b/01\347\277\201\347\253\240\345\275\254/\347\254\224\350\256\260/2022-09-05.md"
new file mode 100644
index 0000000000000000000000000000000000000000..30d8f778e85c67e6be476f41141ea9172fbbce5c
--- /dev/null
+++ "b/01\347\277\201\347\253\240\345\275\254/\347\254\224\350\256\260/2022-09-05.md"
@@ -0,0 +1,23 @@
+鍏ㄥ眬鍙橀噺
+鍏ㄥ眬鍙橀噺蹇呴』鏍囪鈥楡@鈥欎负鍓嶇紑锛屾瘮濡傗�楡@version鈥�
+鍏ㄥ眬鍙橀噺鐢辩郴缁熷畾涔夊拰缁存姢锛屽彧鑳借鍙栵紝涓嶈兘鏇存敼鍊�
+鍦ㄦ暣涓猄QL鐜涓嬪彲浠ヨ璁块棶鎴栬皟鐢�
+
+
+--@@ERROR:杩斿洖鎵ц鐨勪笂涓�涓鍙ョ殑閿欒鍙�
+--@@IDENTITY:杩斿洖鏈�鍚庢彃鍏ョ殑鏍囪瘑鍊�
+--@@MAX_CONNECTIONS:杩斿洖鍏佽鍚屾椂杩涜鐨勬渶澶х敤鎴疯繛鎺ユ暟
+--@@ROWCOUNT:杩斿洖鍙椾笂涓�璇彞褰卞搷鐨勮鏁�
+--@@SERVERNAME:杩斿洖杩愯 SQL Server 鐨勬湰鍦版湇鍔″櫒鐨勫悕绉�
+--@@SERVICENAME:杩斿洖 SQL Server 姝ｅ湪鍏朵笅杩愯鐨勬敞鍐岃〃椤圭殑鍚嶇О
+--@@TRANCOUNT:杩斿洖褰撳墠杩炴帴鐨勬椿鍔ㄤ簨鍔℃暟
+--@@LOCK_TIMEOUT:杩斿洖褰撳墠浼氳瘽鐨勫綋鍓嶉攣瀹氳秴鏃惰缃紙姣锛�
+
+
+灞�閮ㄥ彉閲�
+澹版槑
+declare @age int 
+
+set涓巗elect鐨勫尯鍒�
+set鍙兘鏌ヨ鍏朵腑涓�鏉℃暟鎹紝褰撶粨鏋滈泦鏈夊鏉℃暟鎹殑鏃跺�欙紝浣跨敤set浼氭姤閿�
+select鏌ヨ澶氭潯鏁版嵁鏃堕粯璁ゆ槸鏈�鍚庝竴鏉℃暟鎹�
\ No newline at end of file