Re: Functions with dynamic queries

Try this instead:

Create Function calc_stocks(text) Returns text AS '
Declare codart ALIAS For $1; all_stocks record; stock text;
Begin
Select sum stocks.stkreal as stock1,      sum stocks.stkpteser) as stock2 
into all_stocks
From stocks, prendas
Where prendas.codprenda = stocks.codprenda and      prendas.codarticulo = codart;
stock := (all_stocks.stock1 ||         all_stocks.stock2)::text; Return stock;
End;
' language 'plpgsql';

--- Gabriel Dovalo Carril <dovalo@terra.es> wrote:
> 
> 
> > you may not need a function at all if your case is
> that simple . you
> > can use subselects and || operators to do many
> complicated things..
> > can we know a bit more abt. your specific problem
> 
> 
> Ok. I have this query:
> 
> Select sum(stocks.stkreal)::text || ',' || 
>     sum(stocks.stkpteser)::text as stock 
> From stocks, prendas 
> Where prendas.codprenda = stocks.codprenda and 
> prendas.codarticulo = '020720004'; 
> 
> And I want to create a function which receives 
> "codarticulo" as a parameter.
> 
> *----------------
> Create Function calc_stocks(text) Returns text AS '
> Declare
>   codart ALIAS For $1;
>   all_stocks record;
> Begin
>  Execute '' Select sum(stocks.stkreal)::text || ''
>   || '''''' ,''''''
>   || '' || ''
>   || ''sum(stocks.stkpteser)::text as stock ''
>   || ''into all_stocks ''
>   || ''From stocks, prendas ''
>   || ''Where prendas.codprenda = stocks.codprenda
> and ''
>   || ''prendas.codarticulo = codart; ''
>   Return all_stocks.stock;
> End;
> ' language 'plpgsql';
> *-----------------
> gesyweb=# select calc_stocks('020220064');
> ERROR:  record all_stocks is unassigned yet
> gesyweb=#
> 
> ---------------------------(end of
> broadcast)---------------------------
> TIP 2: you can get off all lists at once with the
> unregister command
>     (send "unregister YourEmailAddressHere" to
majordomo@postgresql.org)


__________________________________________________
Do You Yahoo!?
LAUNCH - Your Yahoo! Music Experience
http://launch.yahoo.com