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create table t3(id int identity(1, 1), b int, dt datetime)
insert into t3(b, dt) values(1, getdate())
insert into t3(b, dt) values(3, getdate())
insert into t3(b, dt) values(1, getdate())
insert into t3(b, dt) values(4, getdate())
insert into t3(b, dt) values(6, getdate())
insert into t3(b, dt) values(1, getdate())
insert into t3(b, dt) values(2, getdate())
select * from t3 t
where (select sum(b) from t3 where id<=t.id)<6]
id b dt
----------- ----------- -----------------------
1 1 2010-09-08 16:24:21.700
2 3 2010-09-08 16:24:21.700
3 1 2010-09-08 16:24:21.717
(3 行受影响)
select * from t3
where (select sum(b) from t3 where id<=a.id)<6