On 25 August 2018 at 04:05, Finnerty, Jim <jfinn...@amazon.com> wrote: > I'll explore a proper way to test that it's in the single-relation case, and > will post a separate thread for the 'remove unnecessary DISTINCT' > optimization.
See: has_multiple_baserels() in allpaths.c -- David Rowley http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services
