On 2019-09-17 19:37, Alvaro Herrera wrote: > On 2019-Aug-01, Thomas Munro wrote: > >> Indeed, that seems like a problem, and it's a good question. You can >> see this on unpatched master with SELECT x.filler FROM >> (pgbench_tellers AS t JOIN b USING (bid)) AS x. > > I'm not sure I understand why that problem is a blocker for this patch.
I tried to analyze the spec for what the behavior should be here, but I got totally lost. I'll give it another look. -- Peter Eisentraut http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services