各位大虾帮帮忙:
如何剔除数据表中连续重复的记录记做1条记录??
数据表如下,我想要取result=0的sn在各prodorderid下的个数( 注意:要剔除连续重复的数据,记做1条记录,但是不连续的重复的分别记为1条记录 )
create table test
(
id int identity(1,1) primary key,
sn varchar(50) not null,
prodorderid int not null,
result int not null
)
--insert into test values ('20140425001',1,0)
--insert into test values ('20140425001',1,1)
--insert into test values ('20140425001',2,0)
--insert into test values ('20140425001',2,0)
--insert into test values ('20140425001',2,0)
--insert into test values ('20140425001',1,1)
--insert into test values ('20140425001',2,0)
--insert into test values ('20140425001',2,0)
--insert into test values ('20140425001',2,1)
--insert into test values ('20140425001',3,0)
--insert into test values ('20140425001',1,1)
--insert into test values ('20140425001',2,0)
--insert into test values ('20140425001',2,0)
--insert into test values ('20140425001',1,0)
--insert into test values ('20140425001',1,0)
具体问题如图片所示: