Marc Millas <marc.millas@xxxxxxxxxx> writes: > Re-reading my post, I see that even the élise is not sorted correctly on > w10... Sort orders aren't even particularly guaranteed on different releases of the same platform, let alone totally different platforms. glibc made major changes to their collation rules not long ago: https://wiki.postgresql.org/wiki/Locale_data_changes At one time we thought that migrating to ICU sorting might bring a little more stability to this, but I think what we've found so far is that it's just different :-( regards, tom lane