无意之中 实现了个两表互相调用插入触发器的代码

无意之中 实现了个两表互相调用插入触发器的代码

代码如下

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create table A
(idint identity(1,1),Namevarchar(50))
create table B
(idint identity(1,1),Namevarchar(50))
go

CREATETRIGGER ta1ON A
FORinsert
AS
declare @Name varchar(50) ,@a int
select @Name=namefrom inserted
commit
BEGIN TRANSACTION
SELECT @a=count(name)FROM BWHERE name=@name
if(@a=0)begin
insertinto B (Name)values (@Name)
end
go


CREATETRIGGER ta2ON B
FORinsert
AS
declare @Name varchar(50) ,@a int
select @Name=namefrom inserted
SELECT @a=count(name)FROM AWHERE name=@name
if(@a=0)
begin
insertinto A(Name)values (@Name)
commit
BEGIN TRANSACTION
end
go

insert into A(name)values('2')

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