Re: Challenging : Aggregating several columns to single line
Posted in 2013
select a.cat, a.id as id1, a.data as data1, b.id as id2, b.data as data2,c.id as id3, c.data as data3
from teste as a, teste as b, teste as c
where a.cat = b.cat and b.cat = c.cat
and a.id = 1 and b.id = 3 and c.id = 3;
Art
Art S. Kagel
Advanced DataTools (www.advancedatatools.com)
Blog: http://informix-myview.blogspot.com/
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On Tue, Mar 12, 2013 at 8:01 PM, Cesar Inacio Martins <
cesar.inacio.martins@gmail.com> wrote:
>
> This is something where I always see as huge challenge when need to play
> only with DML on Informix.
> I play now a little with this... and get no easy/simple solution, so
> far...
>
> Get this data :
>
> drop table teste;
> create temp table teste ( id smallint, cat smallint, data char(10));
> insert into teste values ( 1, 1, 'foo ' );
> insert into teste values ( 2, 1, 'bar ' );
> insert into teste values ( 3, 1, 'baz ' );
> insert into teste values ( 4, 2, 'some ' );
> insert into teste values ( 5, 2, 'random ' );
> insert into teste values ( 6, 3, 'Data 1 ' );
> insert into teste values ( 7, 2, 'data ' );
> insert into teste values ( 8, 3, 'Data 2 ' );
> insert into teste values ( 9, 3, 'Data 3 ' );>
> and transform into this :
>
> cat id1 data1 id2 data2 id3 data3
> -----------------------------------------------------
> 1 1 foo 2 bar 3 baz
> 2 4 some 5 random 7 data
> 3 6 Data 1 8 Data 2 9 Data 3
>
> Where the logic is : aggregate into single line the 3 lines what have the
> same "cat" .
> This is possible on ifx 11.70 ? or 12.1?
> Only with DML... no SPL. (consider the user/system don't have grant to
> create procedure)
>
> Original question :
> http://stackoverflow.com/questions/15368750/aggregating-several-columns-to-single-colum
>
> Regards
> Cesar
>
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