sql 字符串分割后分组 

 1 create table #tb
 2 (
 3  id int,
 4  col varchar(50),
 5  num int
 6 )
 7 insert into #tb select 1,'aa,bb,cc,',10
 8 union all select 2,'dd,bb,aa,',20
 9 union all select 3,'cc,aa,ff,',30
10 
11 with segmentations as
12 (
13    select b.id,
14           number=substring(col,A.id,charindex(',',col+',',A.id)-A.id)
15     from #TT A join #tb b on substring(','+col,A.id,1)=','
16 )
17 select number,count(distinct id) [count],count(number) [number] from segmentations group by number

 

posted @ 2012-08-08 21:43  小川丶  阅读(668)  评论(0)  编辑  收藏  举报