Andres Freund <and...@anarazel.de> writes: > On 2020-04-02 14:33:18 -0300, Alvaro Herrera wrote: >> Hmm, for some reason I had it in my head that we would make these use an >> "epoch/val" output format rather than raw uint64 values.
> Why would we do that? IMO the goal should be to reduce awareness of the > 32bitness of normal xids from as many places as possible, and treat them > as an internal space optimization. If they're just int64s then you don't need special functions to do things like finding the min or max in a column of them. regards, tom lane