Re: SQL function and input variables

You can do something like:
DECLARE
  p ALIAS FOR $1;

in the function, if you want.

Susan

-----Original Message-----
From: pgsql-general-owner@postgresql.org [mailto:pgsql-general-owner@postgresql.org] On Behalf Of Martín Marqués
Sent: Wednesday, September 21, 2011 6:09 AM
To: Thomas Kellerer
Cc: pgsql-general@postgresql.org
Subject: Re: [GENERAL] SQL function and input variables

2011/9/21 Thomas Kellerer <spam_eater@gmx.net>:
> Martín Marqués, 21.09.2011 14:56:
>>
>> I was makeing an SQL function and got an error which on a sintax that
>> I thouhgt would work:
>>
>> CREATE OR REPLACE FUNCTION dicInsertarPalabra(p TEXT)
>> RETURNS INT AS $body$
>>        INSERT INTO public.diccionario (palabra) VALUES (quote_literal(p));
>>        SELECT COALESCE(codigo,0) FROM public.diccionario
>>               WHERE palabra = quote_literal(p);
>> $body$ LANGUAGE 'SQL';
>>
>> Changing p for $1 in the body of the function makes it work. But,
>> can't we label input arguments like how I did here?
>>
> This is because the language SQL does not support named parameters, only
> positional ones.
>
> http://www.postgresql.org/docs/current/static/xfunc-sql.html#XFUNC-NAMED-PARAMETERS

Thanks for the tip. Didn't know that, and just kept using plpgsql sintax.

Thanks again.

--
Martín Marqués
select 'martin.marques' || '@' || 'gmail.com'
DBA, Programador, Administrador

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