On Tue, Jun 22, 2021 at 4:25 AM Justin Pryzby <pryzby@telsasoft.com> wrote:
>
> On Mon, Jun 21, 2021 at 02:08:12PM +0100, Simon Riggs wrote:
> > New chapter for Hash Indexes, designed to help users understand how
> > they work and when to use them.
> >
> > Mostly newly written, but a few paras lifted from README when they were helpful.
>
>
..
> + the column value also makes all hash index scans lossy. Hash indexes may
> + take part in bitmap index scans and backward scans.
>
> Isn't it more correct to say that it must use a bitmap scan?
>
Why? Hash indexes do support regular index scan.
--
With Regards,
Amit Kapila.