Re: Retrieving last InsertedID : INSERT... RETURNING safe ?
От | Dave Cramer |
---|---|
Тема | Re: Retrieving last InsertedID : INSERT... RETURNING safe ? |
Дата | |
Msg-id | 9096E930-A528-4AF7-92B9-6EB1A5A52F84@fastcrypt.com обсуждение исходный текст |
Ответ на | Re: Retrieving last InsertedID : INSERT... RETURNING safe ? (Paul Tomblin <ptomblin@gmail.com>) |
Ответы |
Re: Retrieving last InsertedID : INSERT... RETURNING safe ?
|
Список | pgsql-jdbc |
On 20-Feb-08, at 7:19 AM, Paul Tomblin wrote: > Dave Cramer wrote: >>> Well, that other solution is dangerous in case multiple inserts >>> to that table are done concurrently; a quite common usage pattern >>> with java web applications handling multiple HTTP requests with >>> concurrent java threads.. >>> >> No it is not dangerous. It is the right way to do it. There is >> absolutely no danger in using currval in this manner. > > Unless you have autocommit on. > I was going to say there are absolutely no situations where this is not true, however in your case autocommit or not it doesn't matter. You have a single connection for the entire application and asynchronous events using that connection. Autocommit or not it will not work with currval. In your case you must use nextval before doing the insert. Dave
В списке pgsql-jdbc по дате отправления: