Re: pgsql: Tweak order of operations in BitmapHeapNext() to avoid the case

tgl@postgresql.org (Tom Lane) writes:

> Log Message:
> -----------
> Tweak order of operations in BitmapHeapNext() to avoid the case of prefetching
> the same page we are nanoseconds away from reading for real.  There should be
> something left to do on the current page before we consider issuing a prefetch.

Doesn't this break things if, say, there's precisely one tuple on every page?
You'll keep raising the prefetch_target but never actually prefetch anything.

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