Tom Lane wrote: > Marc Munro <marc@xxxxxxxxxxxx> writes: > > It makes no sense to me that by storing the date with the time you > > can save 4 bytes. > > Actually, your mistake is in imagining that timestamptz represents the > timezone explicitly ... it doesn't. If it did, it'd be at least as > large as timetz. Hmm, so timetz does that? Amazing ... I didn't know that. Which means that storing date + timetz in two separate columns is not quite the same as storing a timestamptz. Oops. -- Alvaro Herrera http://www.CommandPrompt.com/ PostgreSQL Replication, Consulting, Custom Development, 24x7 support