Help on function creating

Hello everyone, I'm using postgresql form an year and I have some
difficult to write a function to make an report. I'm running PostgreSQL
7.5.3 on i686-pc-linux-gnu (Mandriva 10.1). My table structure is:
Tabela "public.matricula"
Column | Type | Modifiers

-------------------------+--------------------------+-------------------------------------------------
id | integer | not null default
nextval('seq_matricula'::text)
ref_contrato | integer |
ref_pessoa | integer |
ref_campus | integer |
ref_curso | integer |
ref_periodo | character varying(10) |
ref_disciplina | integer |
ref_curso_subst | integer |
ref_disciplina_subst | integer |
ref_disciplina_ofer | integer |
nota | double precision | default 0
nota_exame | double precision | default 0
nota_final | double precision | default 0
conceito | character varying(5) | default
''::character varying
conceito_exame | character varying(5) | default
''::character varying
conceito_final | character varying(5) | default
''::character varying

I need to have an output like:
ref_pessoa | ref_disciplina1 | ref_disciplina2 | ... | ref_disciplina n
1 | nota_final1 | nota_final2 | ... | nota_final n

How can I make this ? I know that I need to declare an variable an than
make an for - loop, but I don't know how. Where can I get some examples
for this?
Thanks.

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Assessor de Tecnologia de Informação
Tel.: 0 ** 21 8131-2313

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