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Re: Fw: postgresql experts please help

From: Michael Schmidt <MichaelMSchmidt(at)msn(dot)com>
To: Mark Lewis <mark(dot)lewis(at)mir3(dot)com>
Cc: Andrei Ilitchev <andrei(dot)ilitchev(at)oracle(dot)com>, pgsql-jdbc(at)postgresql(dot)org, Marina Vatkina <Marina(dot)Vatkina(at)Sun(dot)COM>
Subject: Re: Fw: postgresql experts please help
Date: 2007-10-18 17:58:28
Message-ID: BAYC1-PASMTP1354B178A3644A03954E90A39E0@CEZ.ICE (view raw, whole thread or download thread mbox)
Lists: pgsql-jdbc
Mark Lewis wrote:
> On Thu, 2007-10-18 at 09:17 -0400, Andrei Ilitchev wrote:
>> Dear PostgreSQL jdbc experts,
>> I created a table with identity:
>> then through jdbc connection inserted a row into the table,
>> then attempted to select pk value back through the same jdbc connection 
>> using currval - that failed with "not yet defined in this session" 
>> exception.
>> What's wrong here?
> You haven't disabled JDBC autocommit for this connection.  That means
> that each statement gets executed in a separate transaction.
> Since currval is only valid within the scope of a single transaction,
> and you're executing your "select currval" from a separate transaction,
> that's why you can't see it.
> -- Mark Lewis
> ---------------------------(end of broadcast)---------------------------
> TIP 7: You can help support the PostgreSQL project by donating at
Also, from my read of the documentation and experience, you have to call 
nextval before you can call currval in the transaction.

Michael Schmidt

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