Re: upper() don't work with field-alias in the order by part

On Thu, 6 Sep 2001, Wjatscheslaw [iso-8859-1] Wächter wrote:

> I'm using PostgreSql 7.1.2 on SuSe-Linux
>
> Example:
>     this works:
>     select p1.prs_vorname as vorname, p1.prs_nachname as nachname,
>            p1.lfdnr as lfdnr, pos.pos_name as position,
>            p1.prs_email as email, abt.abt_name as abteilung
>     from person p1 left join abteilung abt
>            on abt.lfdnr = p1.prs_abt_lfdnr,
>          person p2 left join positionen pos
>            on pos.lfdnr=p2.prs_pos_lfdnr
>     where   p1.lfdnr=p2.lfdnr
>     ORDER BY nachname;
>
>     this don't work:
>     select p1.prs_vorname as vorname, p1.prs_nachname as nachname,
>            p1.lfdnr as lfdnr, pos.pos_name as position,
>            p1.prs_email as email, abt.abt_name as abteilung
>     from person p1 left join abteilung abt
>            on abt.lfdnr = p1.prs_abt_lfdnr,
>          person p2 left join positionen pos
>            on pos.lfdnr=p2.prs_pos_lfdnr
>     where   p1.lfdnr=p2.lfdnr
>     ORDER BY upper(nachname);
>
>     ERROR:  Attribute 'nachname' not found

Does upper(p1.prs_nachname) work?