使用觸發器操作表1(新增,更新,刪除) 同步實現表2的操作
阿新 • • 發佈:2019-01-24
ifobject_id('TABLE_1') isnotnulldroptable TABLE_1
CREATETABLE TABLE_1
(
ID INTprimarykey,
Name1 nchar(10),
Name2 nchar(10)
)
ifobject_id('TABLE_2') isnotnulldroptable TABLE_2
CREATETABLE TABLE_2
(
ID INTprimarykey,
Name1 nchar(10),
Name2 nchar(10)
)
INSERTINTO Table_1 VALUES(1,'adsd','Chi')
INSERT
INSERTINTO Table_2 VALUES(2,'Alex','Chi')
createtrigger tr_info on TABLE_2
forinsert,update,deleteasbeginifexists(select1from inserted) andnotexists(select1from deleted)--insert觸發器
begininsertinto Table_1 select*from inserted
endelseifexists(select1from inserted) and
beginupdate b1
set b1.Name1=U.Name1,b1.Name2=U.Name2
from Table_1 b1,deleted U
where b1.ID=U.ID
endelsebegindelete Table_1 where ID=(select ID from deleted)
endend--插入測試INSERTINTO Table_2 VALUES(3,'huguo','Chi')
select*from TABLE_1
ID Name1 Name2
2 Alex Chi
3 huguo Chi
(3 行受影響)
--刪除測試deletefrom Table_2 where ID=3
ID Name1 Name2
----------- ---------- ----------1 adsd Chi
2 Alex Chi
(2 行受影響)
--更新測試select*from Table_2
update Table_2 set Name1='ALex2'where ID=2
ID Name1 Name2
----------- ---------- ----------1 adsd Chi
2 ALex2 Chi
(2 行受影響)