Re: code in docs gives me an error

Lists: pgsql-docs
From: "Hicham G(dot) Elmongui" <elmongui(at)cs(dot)purdue(dot)edu>
To: pgsql-docs(at)postgresql(dot)org
Subject: code in docs gives me an error
Date: 2004-10-19 14:21:26
Message-ID: cl37t2$95f$1@news.hub.org
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Lists: pgsql-docs

Hi
I tried creating the function (from sec 19.3.1). But it gives me the
following error: "ERROR: type tablename does not exist".
Any ideas of what i might be doing wrong?

CREATE FUNCTION use_many_fields(tablename) RETURNS TEXT AS '
DECLARE
in_t ALIAS FOR $1;
BEGIN
RETURN in_t.f1 || in_t.f3 || in_t.f5 || in_t.f7;
END;
' LANGUAGE 'plpgsql';

Thanks,
--Hicham

From: Oliver Elphick <olly(at)lfix(dot)co(dot)uk>
To: "Hicham G(dot) Elmongui" <elmongui(at)cs(dot)purdue(dot)edu>
Cc: pgsql-docs(at)postgresql(dot)org
Subject: Re: code in docs gives me an error
Date: 2004-10-20 15:52:50
Message-ID: 1098287570.24233.32.camel@linda
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Lists: pgsql-docs

On Tue, 2004-10-19 at 15:21, Hicham G. Elmongui wrote:
> I tried creating the function (from sec 19.3.1). But it gives me the
> following error: "ERROR: type tablename does not exist".
> Any ideas of what i might be doing wrong?
>
> CREATE FUNCTION use_many_fields(tablename) RETURNS TEXT AS '

You are passing a composite type for a row from the table called
"tablename"; such a table does not exist. Use the name of a table that
actually exists (and has the fields named in the RETURN statement).

> DECLARE
> in_t ALIAS FOR $1;
> BEGIN
> RETURN in_t.f1 || in_t.f3 || in_t.f5 || in_t.f7;
> END;
> ' LANGUAGE 'plpgsql';

--
Oliver Elphick olly(at)lfix(dot)co(dot)uk
Isle of Wight http://www.lfix.co.uk/oliver
GPG: 1024D/A54310EA 92C8 39E7 280E 3631 3F0E 1EC0 5664 7A2F A543 10EA
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