diff --git "a/39\351\231\206\345\273\272\351\224\213/2022-10-10\347\254\254\345\215\201\344\272\214\346\254\241\344\275\234\344\270\232\350\247\246\345\217\221\345\231\250/2022-10-10\347\254\254\345\215\201\344\272\214\346\254\241\344\275\234\344\270\232\350\247\246\345\217\221\345\231\250.sql" "b/39\351\231\206\345\273\272\351\224\213/2022-10-10\347\254\254\345\215\201\344\272\214\346\254\241\344\275\234\344\270\232\350\247\246\345\217\221\345\231\250/2022-10-10\347\254\254\345\215\201\344\272\214\346\254\241\344\275\234\344\270\232\350\247\246\345\217\221\345\231\250.sql"
new file mode 100644
index 0000000000000000000000000000000000000000..f88680d36674d48f78b958fad989785ce32ec383
--- /dev/null
+++ "b/39\351\231\206\345\273\272\351\224\213/2022-10-10\347\254\254\345\215\201\344\272\214\346\254\241\344\275\234\344\270\232\350\247\246\345\217\221\345\231\250/2022-10-10\347\254\254\345\215\201\344\272\214\346\254\241\344\275\234\344\270\232\350\247\246\345\217\221\345\231\250.sql"
@@ -0,0 +1,54 @@
+use master
+--（1）假设有部门表和员工表，在添加员工的时候，该员工的部门编号如果在部门表中找不到
+--，则自动添加部门信息，部门名称为"新部门"。
+select * from Department
+select * from People
+go
+create trigger tri_CheckSalary
+on people for insert
+as
+	if not exists(select * from Department where DepartmentId=(select DepartmentId from inserted))
+	insert into Department(DepartmentId,DepartmentName)
+	values ((select DepartmentId from inserted),'新部门') 
+go
+	insert into People(DepartmentId,PeopleName,PeopleSex,PeopleSalary) values('005','赵云','男',9000)
+
+drop trigger tri_CheckSalary
+
+
+--（2）触发器实现，删除一个部门的时候将部门下所有员工全部删除。
+go
+create trigger tri_DeletePeopleByDepartment
+on Department for delete 
+as
+	delete from People where People.DepartmentId=(select DepartmentId from deleted)
+go	
+	delete Department where DepartmentId='005'
+drop trigger tri_DeletePeopleByDepartment
+ 
+
+--(3)创建一个触发器，删除一个部门的时候判断该部门下是否有员工，有则不删除，没有则删除。
+go
+create trigger tri_DeleteDepartment
+on Department Instead of delete
+as 
+	if not exists(select * from People where DepartmentId=(select DepartmentId from deleted))
+	begin
+	delete from Department where DepartmentId=(select DepartmentId from deleted)  
+	end 
+go
+	delete from Department where DepartmentId='005'
+
+drop trigger tri_DeleteDepartment
+
+--（4）修改一个部门编号之后，将该部门下所有员工的部门编号同步进行修改
+go
+create trigger tri_PrintSalary
+on Department for update
+as
+	update People set DepartmentId=(select DepartmentId from inserted)
+	where DepartmentId=(select DepartmentId from deleted)
+
+go
+update Department set DepartmentId = '002' where DepartmentId='001'
+drop trigger tri_PrintSalary
\ No newline at end of file
diff --git "a/39\351\231\206\345\273\272\351\224\213/2022-10-10\347\254\254\345\215\201\344\272\214\346\254\241\344\275\234\344\270\232\350\247\246\345\217\221\345\231\250/2022-10-10\347\254\254\345\215\201\344\272\214\346\254\241\347\254\224\350\256\260\350\247\246\345\217\221\345\231\250.md" "b/39\351\231\206\345\273\272\351\224\213/2022-10-10\347\254\254\345\215\201\344\272\214\346\254\241\344\275\234\344\270\232\350\247\246\345\217\221\345\231\250/2022-10-10\347\254\254\345\215\201\344\272\214\346\254\241\347\254\224\350\256\260\350\247\246\345\217\221\345\231\250.md"
new file mode 100644
index 0000000000000000000000000000000000000000..e8414ffcf5e51fb41a3016ac0b9988466046c729
--- /dev/null
+++ "b/39\351\231\206\345\273\272\351\224\213/2022-10-10\347\254\254\345\215\201\344\272\214\346\254\241\344\275\234\344\270\232\350\247\246\345\217\221\345\231\250/2022-10-10\347\254\254\345\215\201\344\272\214\346\254\241\347\254\224\350\256\260\350\247\246\345\217\221\345\231\250.md"
@@ -0,0 +1,34 @@
+瑙﹀彂鍣紙trigger锛�
+
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+ 瑙﹀彂鍣紙 trigger 锛夋槸浣滀负瀵规暟鎹簱淇敼鐨勮繛甯︽晥鏋滆�岀敱绯荤粺鑷姩鎵ц鐨勪竴鏉¤鍙ャ�傚畠鏄竴绉嶇壒娈婄殑瀛樺偍杩囩▼銆備篃鏄竴涓簨鍔★紙鍙互鍥炴粴锛夈�備负浜嗗畾涔変竴涓紝鎴戜滑蹇呴』锛�
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+- 鎸囨槑褰撹Е鍙戝櫒鎵ц鏃舵墍閲囧彇鐨勫姩浣�.
+
+
+ 瑙﹀彂鍣ㄥ垎绫�
+鍒嗕负 DML瑙﹀彂鍣�
+DML瑙﹀彂鍣�  锛� 澧炲垹鏀�
+after瑙﹀彂鍣細  澧炲垹鏀� 涔嬪悗鎵ц鐨� 
+after瑙﹀彂鍣ㄤ富瑕佺敤浜庯細insert锛寀pdate锛宒elete
+instead of 瑙﹀彂鍣�     锛� 澧炲垹鏀� 涔嬪墠妫�鏌ョ殑
+
+鍒涘缓瑙﹀彂鍣ㄧ殑璇彞
+CREATE TRIGGER <瑙﹀彂鍣ㄥ悕绉�>
+ON table_name
+FOR [DELETE, INSERT, UPDATE]
+AS
+  T-SQL璇彞
+GO
+--WITH ENCRYPTION琛ㄧず鍔犲瘑瑙﹀彂鍣ㄥ畾涔夌殑SQL鏂囨湰
+--DELETE, INSERT, UPDATE鎸囧畾瑙﹀彂鍣ㄧ殑绫诲瀷
+ 鎬荤粨
+
+ 1.鎻掑叆鎿嶄綔锛圛nsert锛� 
+*\*inserted 琛╘*鏈夋暟鎹紝*\*deleted 琛╘*鏃犳暟鎹� 
+
+2.鍒犻櫎鎿嶄綔锛圖elete锛� 
+*\*inserted 琛╘*鏃犳暟鎹紝*\*deleted 琛╘*鏈夋暟鎹� 
+
+3.鏇存柊鎿嶄綔锛圲pdate锛� 
+*\*inserted 琛╘*鏈夋暟鎹紙鏂版暟鎹級锛�*\*deleted 琛╘*鏈夋暟鎹紙鏃ф暟鎹級 
\ No newline at end of file