Re: getUdateCount() vs. RETURNING clause

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От Oliver Jowett
Тема Re: getUdateCount() vs. RETURNING clause
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Msg-id 4B0D2DB0.8020707@opencloud.com
обсуждение исходный текст
Ответ на Re: getUdateCount() vs. RETURNING clause  (Thomas Kellerer <spam_eater@gmx.net>)
Ответы Re: getUdateCount() vs. RETURNING clause
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Thomas Kellerer wrote:

> Back to my original question then: why doesn't the Postgres driver
> return 1 as the updateCount in this situation?
> I only get a single result set (which is correct) but never a 1 as the
> update count.

Back to my original answer then ;-)

Quoting your original code:

> PreparedStatement pstmt = con.prepareStatement(UPDATE_SQL); // the statement from above
> pstmt.setInt(1, 42);
> boolean hasResult = pstmt.execute();
>
> if (hasResult) {
>  ResultSet rs = pstmt.getResultSet();
>  if (rs != null && rs.next()) {
>    int newId = rs.getInt(1);
>    System.out.println("newid: " + newId);
>  }
> }
>
> int affected = pstmt.getUpdateCount();
> System.out.println("affected: " + affected);

You never call getMoreResults(), so you are only looking at a single
result, which is either a resultset or an update count, never both.

-O

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