On Fri, 11 Mar 2005 13:26:07 +0100, Steven Verhoeven
<Steven2@dmbr.ugent.be> wrote:
> My table definition :
>
> id | fref | mref
> ------+-----------+----------
> 1 | 23 | 25
> 2 | 24 | 28
> 3 | 25 | 31
> 4 | 26 | 34
>
> i need a query that results in this :
>
> id | ref
> ------+----------
> 1 | 23
> 1 | 25
> 2 | 24
> 2 | 28
> 3 | 25
> 3 | 31
> 4 | 26
> 4 | 34
>
> Do I need a crosstab-query ?
> Who can help me ?
select id, fref as ref from my_table
union
select id, mref as ref from my_table;
