Re: getUdateCount() vs. RETURNING clause
| От | Oliver Jowett |
|---|---|
| Тема | Re: getUdateCount() vs. RETURNING clause |
| Дата | |
| Msg-id | 4B0D3443.7050902@opencloud.com обсуждение исходный текст |
| Ответ на | Re: getUdateCount() vs. RETURNING clause (Oliver Jowett <oliver@opencloud.com>) |
| Ответы |
Re: getUdateCount() vs. RETURNING clause
|
| Список | pgsql-jdbc |
Oliver Jowett wrote:
> You never call getMoreResults(), so you are only looking at a single
> result, which is either a resultset or an update count, never both.
Also, looking at the code a bit more, RETURNING is a bit of a special
case. Normally, if you have a command that returns a resultset, the
command status is ignored (you generally don't care about the command
status of, for example, a SELECT). Presumably that's happening here too.
(But the advice regarding getMoreResults() is generally applicable, e.g.
if you have a multiple-statement query).
You may have more success using something like this:
> PreparedStatement pstmt = con.prepareStatement("UPDATE something with no RETURNING clause", new String[] {
"some_column"});
> int updateCount = pstmt.executeUpdate();
> ResultSet results = pstmt.getGeneratedKeys();
The driver glues on an appropriate RETURNING clause and arranges for the
resulting resultset to appear via getGeneratedKeys(); the update count
should still appear as expected.
(I haven't actually tried this. caveat emptor)
-O
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