Joost Kraaijeveld wrote:
> Hi,
>
> Should this code work (it obviously doesn't but I want to know why):
>
> Class.forName("org.postgresql.Driver");
> Connection connection =
> DriverManager.getConnection("jdbc:postgresql://muntserver:5432/muntdev","postgres",
> "");
>
> Statement selectStatement = connection.createStatement();
> ResultSet resultSet = selectStatement.executeQuery(
> "select objectid, orderobjectid from prototype.orderlines");
>
> connection.setAutoCommit(false);
>
> PreparedStatement updateStatement =
> connection.prepareStatement("update prototype.orderlines set
> ordernumber = (select ordernumber from prototype.orders where objectid
> = ?) where objectid = ?");
>
> while( resultSet.next() )
> {
> if( (++record % 1000) == 0){
> System.err.println( "handling record: " + record);
> }
>
> updateStatement.setString(1,resultSet.getString("orderobjectid"));
> updateStatement.setString(2,resultSet.getString("objectid"));
>
> updateStatement.addBatch();
> }
>
> updateStatement.execute();
> connection.commit();
> selectStatement.close();
> updateStatement.close();
> connection.close();
It would help if you gave us the error that you're getting?
Rob
