Re: PL/pgsql return resultset/cursor?

Jan Wieck wrote:
> Richard Emberson wrote:
> >
> > Is it possible to return a result-set or cursor from a PL/pgsql
> > procedure, like
> >
> > CREATE OR REPLACE FUNCTION foo()
> > RETURNS <WHAT_TYPE> AS '
> > BEGIN
> > RETURN SELECT * from FOO;
> > END;
> > ' LANGUAGE 'plpgsql';
> >
> > If you open a cursor in a procedure, it gets closed when the procedure
> > exits, right?
>
> Cursors get closed in PostgreSQL when you close them or when
> the transaction ends.
>
> Look at the refcursor data type (new in v7.2) and use
> transactions.

Here is a sample:

create table aa(a int, b int, c int);
create function f() returns refcursor as '
declare
r refcursor;
begin
open r for select * from aa;
return r;
end;' language 'plpgsql';

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