Re: [HACKERS] Help with Array Function in C language...

Thanks a lot, but I still getting an error message like this:
ERROR: cache lookup failed for type 0

What is wrong?

-----Original Message-----
From: pgsql-hackers-owner@postgresql.org
[mailto:pgsql-hackers-owner@postgresql.org] On Behalf Of Tom Lane
Sent: Lunes, 07 de Noviembre de 2005 05:17 p.m.
To: Cristian Prieto
Cc: pgsql-general@postgresql.org; pgsql-hackers@postgresql.org
Subject: Re: [HACKERS] Help with Array Function in C language...

"Cristian Prieto" <cristian@clickdiario.com> writes:
> Datum
> test_array(PG_FUNCTION_ARGS)
> {
>     ArrayType *v = PG_GETARG_ARRAYTYPE_P(1);
>     Datum      element;
>     Oid        array_type = get_array_type(v);

I think you want get_element_type, instead.  And you definitely ought to
be checking for a failure result (zero).

            regards, tom lane

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