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Rollback locks table - why?

From: "Jan Peters" <petersjan(at)gmx(dot)at>
To: pgsql-sql(at)postgresql(dot)org
Subject: Rollback locks table - why?
Date: 2008-03-20 13:42:08
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-sql
Hello list,
I am a bit confused. See the code below:

INSERT INTO test(id,runde) VALUES(2, 0);
--if there is a unique key violstion:
UPDATE test  SET id = 1000 WHERE runde = 0;

When I first run this statement, I do not get any error message, but also there's also no INSERT on table test. If I run just:

INSERT INTO test(id,runde) VALUES(2, 0);

on its own, it works. (i.e. I get a new row). If I run the transaction block from above again I get first a unique key violation (that is ok, because that's what I trying to check for) but there is NO rollback to sp1, only the "Unique Key" error message and after that I get the dreaded "current transaction is aborted" error message and the system reports an EXCLUSIVE LOCK on the table (<IDLE>in transaction).

Any ideas what I am doing wrong?

Using PostGreSQL 8.2.7 on Windows XP.

Regards and many thanks in advance
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