diff --git "a/07 \345\273\226\346\262\273\345\205\210/\344\275\234\344\270\232/2022-10-10 \344\275\234\344\270\232 .sql" "b/07 \345\273\226\346\262\273\345\205\210/\344\275\234\344\270\232/2022-10-10 \344\275\234\344\270\232 .sql"
new file mode 100644
index 0000000000000000000000000000000000000000..b5f83b92f640ddb76060dee4c08a91c0032e503c
--- /dev/null
+++ "b/07 \345\273\226\346\262\273\345\205\210/\344\275\234\344\270\232/2022-10-10 \344\275\234\344\270\232 .sql"	
@@ -0,0 +1,28 @@
+--（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"。
+	create trigger adddepart
+	on people for insert
+	as
+		declare @id varchar(20) = (select DepartmentId from inserted)
+		if not exists(select * from Department where DepartmentId=@id)
+		begin
+			insert into Department values(@id,'新部门')
+		end
+	;
+	insert into People values('004','曹操','男',10000)
+--（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。
+	create trigger deletedepart
+	on department for delete
+	as
+		declare @id varchar(20)=(select DepartmentId from deleted)
+		delete from people where DepartmentId=@id
+	;
+	delete from Department where DepartmentId='006'
+--（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
+	create trigger updatedepart
+	on department for update
+	as
+		declare @oldid varchar(20)=(select DepartmentId from deleted)
+		declare @newid varchar(20)=(select departmentid from inserted)
+		update People set DepartmentId=@newid where DepartmentId=@oldid
+	;
+		update Department set DepartmentId='005' where DepartmentId='004'
diff --git "a/07 \345\273\226\346\262\273\345\205\210/\347\254\224\350\256\260/2022-10-10\347\254\224\350\256\260.md" "b/07 \345\273\226\346\262\273\345\205\210/\347\254\224\350\256\260/2022-10-10\347\254\224\350\256\260.md"
new file mode 100644
index 0000000000000000000000000000000000000000..7a9c43722cc62958c2f68cba2c47a836e42a887a
--- /dev/null
+++ "b/07 \345\273\226\346\262\273\345\205\210/\347\254\224\350\256\260/2022-10-10\347\254\224\350\256\260.md"	
@@ -0,0 +1,40 @@
+瑙﹀彂鍣紙trigger锛�
+
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+
+
+
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+
+create trigger <瑙﹀彂鍣ㄥ悕绉�>
+
+on 鎵ц鎿嶄綔鐨勮〃鍚�  for [delete,insert,update] (澧�,鍒�,鏀圭殑 鎿嶄綔)
+
+as
+
+鈥�	sql 璇彞
+
+;
+
+
+
+1.鎻掑叆鎿嶄綔(insert)
+
+鍦ㄨЕ鍙戝櫒涓細鐢熸垚涓�涓猧nserted琛ㄦ潵甯姪瀛樺偍鎻掑叆鐨勬暟鎹�
+
+2.鍒犻櫎鎿嶄綔(delete)
+
+鍦ㄨЕ鍙戝櫒涓細鐢熸垚涓�涓猟eleted琛ㄦ潵甯姪瀛樺偍鎻掑叆鐨勬暟鎹�
+
+3.鏇存柊鎿嶄綔(update)
+
+鏇存柊鎿嶄綔闇�瑕佷娇鐢╥nserted琛ㄥ拰deleted琛ㄦ潵杩涜鏁版嵁淇敼
+
+inserted琛ㄤ腑瀛樼殑鏄�(鏂版暟鎹�),deleted琛ㄤ腑瀛樼殑涓�(鏃ф暟鎹�)
+
+
+
+
+
+
+