Re: PL/pgsql return resultset/cursor? - Mailing list pgsql-general

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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