> On Wed, Jan 22, 2020 at 09:08:59PM +0000, Floris Van Nee wrote: > > Note in particular that index scans cannot return the same index tuple > > twice - > > - processing a page at a time ensures that that cannot happen. > > > > Can a loose index scan return the same tuple (i.e. a tuple with the same > > heap > > TID) to the executor more than once? > > > > The loose index scan shouldn't return a tuple twice. It should only be able > to skip 'further', so that shouldn't be a problem.
Yes, it shouldn't happen.
