plpgsql rowtype

hi all,

i want to proof if if a rowtype has an attribute or get all attribute of a rowtype.

like:



CREATE OR REPLACE FUNCTION "test"() RETURNS varchar AS '
DECLARE

rs_refr_row rs_refr%ROWTYPE;


begin



if ( proofing if rs_feat_row.id exists ) then
select 1 into rs_feat_row.id;
end if;



RETURN rs_feat_row.id::varchar ;
end;
' LANGUAGE 'plpgsql'

best regards

heiko kehlenbrink