diff --git "a/24\345\274\240\346\267\221\350\212\263/10-10-\350\247\246\345\217\221\345\231\250/10-10-\344\275\234\344\270\232.sql" "b/24\345\274\240\346\267\221\350\212\263/10-10-\350\247\246\345\217\221\345\231\250/10-10-\344\275\234\344\270\232.sql"
new file mode 100644
index 0000000000000000000000000000000000000000..a3fce5521c8f5996f03901de83038def4ce0822b
--- /dev/null
+++ "b/24\345\274\240\346\267\221\350\212\263/10-10-\350\247\246\345\217\221\345\231\250/10-10-\344\275\234\344\270\232.sql"
@@ -0,0 +1,52 @@
+
+use test_trigger
+go
+
+select * from Department
+select * from People
+--（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"。
+go
+-- drop trigger tri_insert
+create trigger tri_insert
+on People for insert
+as 
+	declare @code varchar(10)
+	set @code = (select DepartmentId from inserted)
+	if exists(select DepartmentId from inserted where DepartmentId not in(select DepartmentId from deleted))
+	begin
+		insert into Department values(@code,'新部门')
+	end
+
+insert into People values('002','李铁梅','女',114514)
+-- delete from People where PeopleName = '李铁梅'
+
+
+--（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。
+-- insert into Department values('007','测试部')
+-- insert into People values('007','jojo','男',114514)
+go
+create trigger tri_del
+on Department for delete
+as
+	delete from People where DepartmentId = (select DepartmentId from deleted) 
+
+delete from Department where DepartmentId = '007'
+
+
+--（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
+select * from Department
+select * from People
+go
+create trigger tri_update
+on Department for update 
+as 
+	update People set DepartmentId = (select DepartmentId from inserted) 
+	where DepartmentId = (select DepartmentId from deleted)
+
+update Department set DepartmentId = '007' where DepartmentId = '001'
+
+
+
+
+
diff --git "a/24\345\274\240\346\267\221\350\212\263/10-10-\350\247\246\345\217\221\345\231\250/10-10-\347\254\224\350\256\260-\350\247\246\345\217\221\345\231\250.md" "b/24\345\274\240\346\267\221\350\212\263/10-10-\350\247\246\345\217\221\345\231\250/10-10-\347\254\224\350\256\260-\350\247\246\345\217\221\345\231\250.md"
new file mode 100644
index 0000000000000000000000000000000000000000..1d844e02b78d56e70e620f1d4d496d8c477d3908
--- /dev/null
+++ "b/24\345\274\240\346\267\221\350\212\263/10-10-\350\247\246\345\217\221\345\231\250/10-10-\347\254\224\350\256\260-\350\247\246\345\217\221\345\231\250.md"
@@ -0,0 +1,56 @@
+## 瑙﹀彂鍣紙trigger锛�
+
+#### 浠�涔堟槸瑙﹀彂鍣細 insert  --銆� 涓�绯诲垪闅忕潃鎻掑叆鎿嶄綔鑷姩鎵ц鐨剆ql璇彞闆嗗悎
+
+ **瑙﹀彂鍣�**锛� trigger 锛夋槸浣滀负**瀵规暟鎹簱淇敼鐨勮繛甯︽晥鏋�**鑰�**鐢辩郴缁熻嚜鍔ㄦ墽琛�**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�**浜嬪姟**锛堝彲浠ュ洖婊氾級銆備负浜嗗畾涔変竴涓猍瑙﹀彂鍣╙(https://so.csdn.net/so/search?q=瑙﹀彂鍣�&spm=1001.2101.3001.7020)锛屾垜浠繀椤伙細
+
+- 鎸囨槑**浠�涔堟椂鍊欐墽琛岃Е鍙戝櫒**銆傝繖琚媶鍒嗕负**寮曡捣瑙﹀彂鍣ㄨ妫�娴嬬殑涓�涓猏*浜嬩欢\***鍜�**瑙﹀彂鍣ㄧ户缁墽琛屾墍蹇呴』婊¤冻鐨勪竴涓潯浠�**銆�
+- 鎸囨槑**褰撹Е鍙戝櫒鎵ц鏃舵墍閲囧彇鐨勫姩浣�**銆�
+
+
+
+#### 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�
+
+```sql
+CREATE TRIGGER <瑙﹀彂鍣ㄥ悕绉�>
+ON table_name	-- 瑙﹀彂鐨勮〃
+FOR [DELETE, INSERT, UPDATE]	-- 鍦ㄤ粈涔堢姸鎬佷笅瑙﹀彂 
+AS
+
+  T-SQL璇彞	-- 瑕佽Е鍙戠殑鍐呭
+ 
+-- DELETE, INSERT, UPDATE鎸囧畾瑙﹀彂鍣ㄧ殑绫诲瀷
+-- inserted 鏂扮粨鏋滈泦琛�  deleted 鏃х粨鏋滈泦琛�
+```
+
+
+
+
+
+## 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 
+
+
+