On 2017-03-21 19:49:07 +0530, Pavan Deolasee wrote:
> On Tue, Mar 21, 2017 at 6:55 PM, Robert Haas <robertmhaas@gmail.com> wrote:
>
> >
> > I think that very wide columns and highly indexed tables are not
> > particularly unrealistic, nor do I think updating all the rows is
> > particularly unrealistic.
>
>
> Ok. But those who update 10M rows in a single transaction, would they
> really notice 5-10% variation?
Yes. It's very common in ETL, and that's quite performance sensitive.
Greetings,
Andres Freund
