Re: Perf differences between timestamp and timestamp with timezone

Mike Christensen wrote:
> Hi all -
>
> I'm considering changing all my "timestamp" columns to "timestamp with
> timezone" columns instead. The reason is I want to use UTC time for
> everything in the DB and on the web server, and only ever convert to local
> time on the client itself. I could use a timestamp and just "know" that the
> timezone is UTC, but npgsql seems to handle this a lot better (like set the
> "Kind" property to UTC, etc) if you have a timestamptz column type.
>
> I'm curious if there's any perf drawbacks to doing this, or would the only
> perf hit be if I were comparing timestamp with timestamptz and doing all
> sorts of casts and stuff. Thanks!

I don't think there is any measurable difference in the two data types,
and timestamptz is usually superior, as you have found.

--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com

+ If your life is a hard drive, Christ can be your backup. +