Re: index-only-scan when there is an index on all columns

On 2018-02-28 13:15:45 +1300, David Rowley wrote:
> On 28 February 2018 at 11:11, Andres Freund <andres@anarazel.de> wrote:
> > I'm fairly certain that only vacuum and table rewrites like cluster sets
> > all-visible,
> 
> I don't think the pages are set all visible again after a rewrite.

You're right. We freeze the tuples, but don't set the heap / FSM bits.

Greetings,

Andres Freund