Re: problem with new autocommit config parameter and jdbc

On Wed, 11 Sep 2002, snpe wrote:

> On Wednesday 11 September 2002 02:09 am, Stephan Szabo wrote:
> > On Wed, 11 Sep 2002, snpe wrote:
> > > yes, we're going around in circles.
> > >
> > > Ok.I agreed (I think because Oracle do different)
> > > Transaction start
> > > I type invalid command
> > > I correct command
> > > I get error
> > >
> > > Why.If is it transactin, why I get error
> > > I want continue.
> > > I am see this error with JDeveloper (work with Oracle, DB2 an SQL Server)
> >
> > Right, that's a separate issue (I alluded to it earlier, but wasn't sure
> > that's what you were interested in). PostgreSQL treats all errors as
> > unrecoverable. It may be a little loose about immediately rolling back
> > due to the fact that historically autocommit was on and it seemed better
> > to not go into autocommit mode after the error.
> >
> > I doubt that 7.3 is going to change that behavior, but a case might be
> > made that when autocommit is off the error immediately causes a rollback
> > and new transaction will start upon the next statement (that would
> > normally start a transaction).
> >
>
> Why rollback.This is error (typing error).Nothing happen.
> I think that we need clear set : what is start transaction ?
> I think that transaction start with change data in database
> (what don't change data this start not transaction.

Another interesting case for a select is, what about
select func(x) from table;
Does func() have any side effects that might change data?
At what point do we decide that the statement needs a
transaction?