用一条sql语句查出每个name最近的记录

if exists (select * from sys.objects where name='tb_test')

drop table tb_test

go

create table tb_test

(

name nvarchar(20) not null,

date datetime not null

)

go

insert into tb_test values('gd550765','2009-08-14 16:02:07.293')

insert into tb_test values('gd550765','2009-08-14 16:19:41.000')

insert into tb_test values('gd550765','2009-08-14 16:06:01.530')

insert into tb_test values('gd75','2009-08-14 16:31:06.810')

insert into tb_test values('gd75','2009-08-14 16:31:12.483')

insert into tb_test values('gd77','2009-08-14 16:32:20.310')

insert into tb_test values('gd77','2009-08-14 16:32:37.640')

go

--用一条sql语句查出每个name最近的记录

select * from tb_test a where not exists(select 1 from tb_test where name=a.name and date>a.date)

收藏于 2009-08-14

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