On Thu, 14 Sep 2017 17:02:05 -0500, Merlin Moncure <mmoncure@xxxxxxxxx> wrote: >... With sequences, the database *guarantees* that the >identifier is unique with no exceptions; there never will be a unique >value. Can you give a hypothetical example of how you think they >wouldn't work? Jumping in here, but a month or so past someone here was complaining about a restore resetting all the sequences in the database. Obviously a strange situation [I've never seen it], but something to worry about if you are relying on sequences for uniqueness. Upthread I suggested the timestamp+counter approach. I wasn't thinking about this issue specifically, but it is immune to the counter being reset [accidentally or otherwise]. George -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
