On Sat, Sep 15, 2007 at 06:40:38PM +0500, rihad wrote: > PostgreSQL seems to default to "time without time zone" when declaring > columns in the table schema. Since all my times and timestamps are in > local time zone, and I'm *only* dealing with local times, should I be > using "time with time zone" instead? When would it make a difference? > Only when comparing/subtracting? Is "with time zone" not the default > because it's slower?
Historical I beleive. Postgres has four types: timestamp, timestamptz, time and timetz. Then SQL decreed that TIMESTAMP means WITH TIME ZONE, ie timestamptz. So now you get the odd situation where: timestamp == timestamp with time zone == timestamptz "timestamp" == timestamp without time zone == timestamp time == time without timezone Unfortunatly, the backward compatability issues to fixing this are tricky. Hope this helps, -- Martijn van Oosterhout <[EMAIL PROTECTED]> http://svana.org/kleptog/ > From each according to his ability. To each according to his ability to > litigate.
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