On Thu, Jan 16, 2014 at 8:19 AM, Tom Lane <t...@sss.pgh.pa.us> wrote:

>
> > I think the usecases that would want this for DML probably also wan this
> > to work for unlogged, temp tables.
>
> Huh?  Unlogged tables generate *zero* WAL, by definition.
>

Transactions that only change unlogged tables still generate commit records
to WAL.

I don't think that amount of WAL is particularly relevant to this
discussion, but I was recently surprised by it, so wanted to publicize it.
 (It was causing a lot of churn in my WAL due to interaction with
archive_timeout)

Cheers,

Jeff

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