[SQL]分组排练进行更新

--方法（一）：分组排练进行更新
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create table a(id int identity,aid varchar(),name varchar())
insert into a select ,  'a  '
insert into a select ,  'a  '
insert into a select ,  'a  '
insert into a select ,  'b  '
insert into a select ,  'b  '
insert into a select ,  'c  '
insert into a select ,  'a  '
insert into a select ,  'a  '  

create table b(id int identity,aid varchar(),name varchar())
insert into b select ,  'a  '
insert into b select ,  'a  '
insert into b select ,  'b  '
insert into b select ,  'b  '
insert into b select ,  'b  '
insert into b select ,  'd  ' 

select px=(select count() from a  where aid = t.aid and name= t.name and id<t.id)+,* into #tb1 from a t
select px=(select count () from b where aid = t.aid and name= t.name and id<t.id)+,* into #tb2 from b t

select * from #tb1
select * from #tb2
delete a where id in
(select id from #tb1 a where not exists(select * from #tb2 b where b.px=a.px and b.aid=a.aid and b.name=a.name)
and a.aid=)
insert into a
select aid,name from #tb2 a  where not exists(select * from #tb1 b where b.px=a.px and b.aid=a.aid and b.name=a.name)

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--方法（二）：分组排练进行更新

create table tb1(ID int,Account int)
insert into tb1 values(,                  )
insert into tb1 values(,                  )
insert into tb1 values(,                  )
insert into tb1 values(,                  )
insert into tb1 values(,                  )
insert into tb1 values(,                  )
insert into tb1 values(,                  )
insert into tb1 values(,                  )  

create table tb2(ID int,Account int)
insert into tb2 values(,                  )
insert into tb2 values(,                  )
insert into tb2 values(,                  )
insert into tb2 values(,                  )
insert into tb2 values(,                  )
insert into tb2 values(,                  )
insert into tb2 values(,                  )
insert into tb2 values(,                  )  

select px=identity(int, ,),* into #t1 from tb1 order by account,id
select px=identity(int ,,),* into #t2 from tb2 order by account,id

select a.id,a.account from #t1 a where not exists(select * from #t2 b where a.px=b.px and a.account=b.account)
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--删除临时表

drop table tb1,tb2,#t1,#t2