Gregory Youngblood <pgcluster@xxxxxxxxx> writes: > On Jul 27, 2005, at 9:53 PM, Tom Lane wrote: >> You'd have to translate that to NUMERIC, which would work but would >> take a bit of a performance hit ... > The most common places I've seen unsigned bigint used have been > primary keys for tables where the counter is expected to basically > grow forever. I've also seen it used to store unique user id numbers > instead of varchar fields. [ shrug... ] So store it as plain bigint. There is not any real difference between 2^63 and 2^64 available values --- either way, we'll all be safely dead before overflow occurs. regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 2: Don't 'kill -9' the postmaster