You could use your own type, since it seems you know what values you'll be storing there. You can create it like this:
CREATE TYPE MyResult AS (dt_inici DATE,dt_fi DATE
);
Then you must change your functions as follows:
CREATE OR REPLACE FUNCTION test1() RETURNS MyResult AS '
declarer MyResult;
beginr.dt_inici:=\'01/01/2005\'::Date;r.dt_fi:=\'02/02/2005\'::Date;RETURN r;
end; '
LANGUAGE 'plpgsql' VOLATILE;
CREATE OR REPLACE FUNCTION test2() RETURNS date AS '
declarer MyResult;
beginr:=test1(); RETURN r.dt_inici;
end; '
LANGUAGE 'plpgsql' VOLATILE;
To me, using a TYPE seems clearer than using an array in this case.
2005/6/6, "Rodríguez Rodríguez, Pere" <prr@hosppal.es>:Hello,
how can I write a function that return two or more elements?
I try to return a record but after I don't know how to assign returned value to a variable. For example,
CREATE OR REPLACE FUNCTION test1() RETURNS record AS '
declare
rec record;
begin
select into rec \'01/01/2005\'::Date as dt_inici, \'02/02/2005\'::Date as dt_fi;
return rec;
end; '
LANGUAGE 'plpgsql' VOLATILE;
CREATE OR REPLACE FUNCTION test2() RETURNS date AS '
declare
rec record;
begin
-- rec := test1(); << ERROR: syntax error at or near "rec"
select into rec test1();
return rec.dt_inici; << ERROR: record "rec" has no field "dt_inici"
end; '
LANGUAGE 'plpgsql' VOLATILE;
Can I return an array?, and how I take returned array?
I search postgres documentation but I don't find it
Thanks in advance,pere
