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Dan Greene wrote:
> (newbie to MySQL)
>
> I've been banging my head against the wall on this one for a bit now,
and I understand that last_insert_id() is per-connection based, but most
webapps are connection pooled (simple) or clustered (harder). What are
my options to get the id of the inserted row in a webapp? As a side
note, I'm using JDBC to access the DB.
>
> my thoughts:
> 1- use an innoDB table, start a txn (lock the table), insert, select
max(id_column), end txn (unlock the table)
>
> 2- make an id pool table (innodb), have app server grab pool of ids at
startup, and when pool is empty in similar manner (lock, update, select,
unlock)
>
> 3- look to other product (don't make me do this one!!!! ;) )
>
> 4- continue to bang head against the wall
>
>
> please cc me on any replies, as although I sent a subscription
request, I'm not on list yet...
Is there a reason you don't hold on to the same connection during the
lifespan of one of your web 'transactions'? Also, to avoid a round trip
to the server you should use Statement.getGeneratedKeys().
-Mark
- --
Mr. Mark Matthews
MySQL AB, Software Development Manager, J2EE and Windows Platforms
Office: +1 708 557 2388
www.mysql.com
Are you MySQL Certified?
http://www.mysql.com/certification/
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