Re: [SQL] begin/end/abort work for sequences?

Bruce Momjian wrote:

> > > The sequence po_seq is advancing to the next value even though the
> > > transaction was aborted. If I put other things like updates, inserts, etc.
> > > inside the transaction, they seem to be rolled back OK, but not the
> > > update of the sequence.
> > >
> > > Am I doing something wrong?
> >
> > No. I can't explain you why but AFAIK sequences don't rollback.
>
> If we rolled back sequence numbers, we would have to lock the table
> until the transaction commited or was rolled back. That is too much
> locking so was not worth it.
>

That seems like a pretty big thing to sacrifice. Did sequence locking work before
6.5? It was my impression that it did.

Do you know if there is a workaround? In my particular situation, it is critical
that all instances of the sequence actually get used. If a transaction is
aborted, I lose an instance and everything gets messed up.

--
----------------------------------------------------
Kyle Bateman President, Action Target Inc.
"Viva Yo!" kyle(at)actarg(dot)com (801)377-8033x101
----------------------------------------------------