On Fri, 2020-06-12 at 14:37 -0700, Andres Freund wrote: > I don't see why it's ok to force an additional projection in the very > common case of hashaggs over a few rows. So I think we need to > rethink > 4cad2534da6.
One possibility is to project only spilled tuples, more similar to Melanie's patch from a while ago: https://www.postgresql.org/message-id/caakru_aefesv+ukqwqu+ioenoil2lju9diuh9br8mbyxuz0...@mail.gmail.com Which makes sense, but it's also more code. Regards, Jeff Davis