Hi all,

Have you ever need a concatenation string function for group by clause?

Here is the solution.

http://www.projectdmx.com/tsql/rowconcatenate.aspx

And I like this process.

Ex)

set nocount on;

if OBJECT_ID(‘test’) is not null

drop table test

go

create table test

(

i int identity(1,1)

,c varchar(255)

)

go

insert into test (c)

select ‘a’

union all

select ‘b’

go 100

select i%2, replace(replace(max(b.list),”,”),”,”) as sum_c

from test a

cross apply (

select c + ‘,’ as c

from test

where i%2 = a.i%2

for xml path(”)

) b (list)

group by a.i%2

go