Re: return query execute SQL-problem

On 2012-10-16 10:44, Maximilian Tyrtania wrote:
> Hi there,
>
> here is something I don't quite grasp (PG 9.1.3): This function:
>
> CREATE OR REPLACE FUNCTION f_aliastest()
>   RETURNS setof text AS
> $BODY$
> declare sql text;
> begin
>   sql:='SELECT ''sometext''::text as alias';
>   return query execute SQL;
> end;
> $BODY$
> LANGUAGE plpgsql VOLATILE;
>
> returns its result as:
>
> contactking=# select * from f_aliastest();
>
>  f_aliastest
> -------------
>  sometext
> (1 row)
>
> I was hoping I'd get the data back as 'alias', not as 'f_aliastest'.
> If I do:
>
> contactking=# select alias from f_aliastest();
> ERROR:  column "alias" does not exist
> LINE 1: select alias from f_aliastest();
>
> Is there a way that I can make my function return the field aliases?
>
> Best wishes from Berlin,
>
> Maximilian Tyrtania
> http://www.contactking.de

You can use AS
select f_aliastest() AS alias;


Regards,
C