Re: escape string for pgsql (using jdbc/java)?
От | Tobias Thierer |
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Тема | Re: escape string for pgsql (using jdbc/java)? |
Дата | |
Msg-id | epm2ma$2jnm$1@news.hub.org обсуждение исходный текст |
Ответ на | Re: escape string for pgsql (using jdbc/java)? (Dave Cramer <pg@fastcrypt.com>) |
Ответы |
Re: escape string for pgsql (using jdbc/java)?
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Список | pgsql-jdbc |
Hi, Dave Cramer wrote: >> I'm not so worried about the performance. But if I have a column of >> type SERIAL in my table, then I can retrieve the generated value using: [...] > You could if that worked in postgresql but getGeneratedKeys does not > currently work Yes, I was actually just about to post a follow-up to my previous message because I just found out that pgsql doesn't support this. >> whereas it is not clear to me how this works with a prepared >> statement. Strangely, PreparedStatement extends Statement, so >> PreparedStatement still has the executeUpdate(String,int) method - but >> it is not clear to me whether this method will throw the previously >> prepared statement away or what. >> >> Is there any easy way to retrieve the generated value for the SERIAL >> column when using a prepared statement? >> > Yes, if it worked it would work with prepared statements. Yes, I just found that out too. But given that pgsql doesn't allow me to immediately retrieve the value of the autogenerated key, how can I (or can't I!?)? If I made a SELECT MAX(id) statement right afterwards then I couldn't be sure that that is the id just generated, because due to concurrency someone else may have just submitted an entry too, right? How are these things done in pgsql? Tobias
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