Question

SQL 2008 触发器中UPDATE、DELETE

现有A，B二个表，B中比A中多一KEY例，A和B表中数据都一样。
A表字段 A，B，C，D，E，F，G 字段A主健，非空
B表字段 A，B，C，D，E，F，G，KEY 字段A主健，非空

现想做触发器完成以下功能

1，A表UPDATE时，B表同步且B.KEY = 2，
2，A表发生DELETE时 B.KEY = 3

Answer 1

1.CREATE TRIGGER TEST1
ON A FOR UPDATE
AS
DECLARE @A,@B,@C,@D,@E,@F,@G
SELECT @B=B,....@G=G FROM INSERTED WHERE A=@A
UPDATE B SET A=@A,,,,G=@G,[KEY] = 2 WHERE @A=A
GO
2.CREATE TRIGGER TEST2
ON A FOR DELETE
AS
declare @A
SELECT @A = A FROM DELETED
UPDATE B SET [KEY] = 3
GO
第一个我不知道能不能完成你的功能 没有测试

Answer 2

1、题
create trigger up_Record
on A表
after update
as
begin
declare @a varchar(50),@b varchar(50),@c varchar(50),@d varchar(50),@e varchar(50),@f varchar(50),@g varchar(50);
declare up_Record cursor for
select A from inserted;
fetch next from up_Record into @a,@b,@c,@d,@e,@f,@g;
while @@fetch_status=0
begin
update B表 set B=@b,C=@c,D=@d,E=@e,F=@f,G=@g,B表.KEY=2 where A=@a
fetch next from up_Record into @a,@b,@c,@d,@e,@f,@g;
end
Close up_Record
Defallocate up_Record
end
2、题
create trigger de_Record
on A表
after delete
as
begin
update B表 KEY=3 where A in (select A from deleted)
end