See the new doc page I made for it:
http://developer.postgresql.org/docs/postgres/plpgsql-cursors.html
The last section has the info you need. This is now also referenced in
the FAQ on the web site.
---------------------------------------------------------------------------
Richard Emberson wrote:
> Ok, I wanted to wrap a select statement with a PL/pgsql procedure
> (information hiding, etc.)
> So I have:
>
> CREATE OR REPLACE FUNCTION user_data_select_all(BIGINT)
> RETURNS REFCURSOR AS '
> DECLARE
> -- parameters
> owner_id_p ALIAS FOR $1;
>
> -- local variables
> rc REFCURSOR;
> BEGIN
> OPEN rc FOR SELECT *
> FROM user_data
> WHERE
> owner_id = owner_id_p;
> RETURN rc;
> END;
> ' LANGUAGE 'plpgsql' WITH (isstrict);
>
> Now from within psql I get the following:
>
> => select user_data_select_all(12);
> user_data_select_all
> ----------------------
> <unnamed cursor 15>
> (1 row)
>
> I kind of expected to see the actual rows?!?
>
> and from JDBC I get an exception:
> Bad Long <unnamed cursor 1>
> at org.postgresql.jdbc2.ResultSet.toLong(ResultSet.java:1498)
> at org.postgresql.jdbc2.ResultSet.getLong(ResultSet.java:257)
>
> So the question is can I wrap a select function as return a resultset to
> JDBC?
> Richard
>
>
> ---------------------------(end of broadcast)---------------------------
> TIP 4: Don't 'kill -9' the postmaster
>
--
Bruce Momjian | http://candle.pha.pa.us
pgman@candle.pha.pa.us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
+ Christ can be your backup. | Drexel Hill, Pennsylvania 19026
