On Wed, 2016-06-15 at 15:56 +0200, Alexander Farber wrote:
> Good afternoon,
>
> at PostgreSQL 9.5.3 I have a stored function (full source code below)
> returning void, which I successfully call with PHP:
>
> function skipGame($dbh, $uid, $gid) {
> $sth = $dbh->prepare('SELECT words_skip_game(?, ?)');
> $sth->execute(array($uid, $gid));
> }
>
> Now I am trying to call the same function through JDBC driver
> 9.4.1208.jre7:
>
> private static final String SQL_SKIP_GAME =
> "SELECT words_skip_game(?, ?)";
>
> try (PreparedStatement st =
> mDatabase.prepareStatement(SQL_SKIP_GAME)) {
> st.setInt(1, mUid);
> st.setInt(2, gid);
> st.executeUpdate();
> }
>
> and sadly get the SQLException "A result was returned when none was
> expected.".
>
> Shouldn't I call executeUpdate() method here - according to the doc
> https://www.postgresql.org/docs/7.4/static/jdbc-callproc.html ; ?
>
> Below is the stored procedure, thank you for any hints.
> Alex
>
> CREATE OR REPLACE FUNCTION words_skip_game(
> IN in_uid integer,
> IN in_gid integer)
> RETURNS void AS
> $func$
> BEGIN
> UPDATE words_games
> SET played1 = CURRENT_TIMESTAMP
> WHERE gid = in_gid
> AND player1 = in_uid
> /* and it is first player's turn */
> AND (played1 IS NULL OR played1 < played2);
>
> IF NOT FOUND THEN
> UPDATE words_games
> SET played2 = CURRENT_TIMESTAMP
> WHERE gid = in_gid
> AND player2 = in_uid
> /* and it is second player's turn */
> AND (played2 IS NULL OR played2 < played1);
> END IF;
> END
> $func$ LANGUAGE plpgsql;
>
Aren't you supposed to use prepareCall?
Also 7.4 documentation is a tad out of date but the method is the same.
HTH,
Rob
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