Re: setFetchSize()

Felipe Schnack wrote:

>  but I said I can't understand it when autocommit is off, not when it's on...
>
autocommit is off == you are in transaction.

You must be in transaction to be able to declare a cursor.

Dima

>
>On Thu, 17 Jul 2003 13:16:15 -0400
>Dmitry Tkach <dmitry@openratings.com> wrote:
>
>
>
>>Felipe Schnack wrote:
>>
>>
>>
>>> Seems to me like a quite good solution! But why this is needed when autocommit is off? I can't understand.
>>>
>>>
>>>
>>>
>>Because you can only have cursors declared inside a transaction :-(
>>
>>Dima
>>
>>
>>
>>>On Thu, 17 Jul 2003 13:01:43 -0400
>>>Dmitry Tkach <dmitry@openratings.com> wrote:
>>>
>>>
>>>
>>>
>>>
>>>>Rich Cullingford wrote:
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>>All,
>>>>>Will this function be implemented in Release 7.4? I have several arge
>>>>>tables that run Java out of memory when I attempt to load them through
>>>>>JDBC. Any workarounds arppreciated...
>>>>>
>>>>>
>>>>>
>>>>>
>>>>I was using cursors for a while as a workaround...
>>>>Something like this:
>>>>
>>>>c.setAutocommit (false);
>>>>Statement s = c.createStatement ();
>>>>s.execute ("declare foo cursor for select * from bar");
>>>>
>>>>while (true)
>>>>{
>>>>   ResultSet rs = s.executeQuery ("fetch 10 from foo");
>>>>   int count = 0;
>>>>   while (rs.next ())
>>>>   {
>>>>       count++;
>>>>       doStuffWithThisRow (rs);
>>>>    }
>>>>
>>>>    if (count < 10) //The whole cursor contents has been processed
>>>>         break;
>>>>}
>>>>
>>>>
>>>>I hope, it helps...
>>>>
>>>>Dima
>>>>
>>>>
>>>>
>>>>---------------------------(end of broadcast)---------------------------
>>>>TIP 1: subscribe and unsubscribe commands go to majordomo@postgresql.org
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>>
>>
>>
>
>
>
>