> -----Ursprüngliche Nachricht----- > Von: Tom Lane <tgl@xxxxxxxxxxxxx> > Gesendet: Samstag, 18. August 2018 17:29 > > Well, it's simpler than that: filter quals are always evaluated at the lowest > possible plan level. Thank you. This "always" was not clear to me, but it explains a few similar cases (with not-so-extreme differences) that I could not understand. Regards Klaus