Re: When exactly is a TIMESTAMPTZ converted to the sessions timezone?

On Tue, Jul  3, 2018 at 05:00:17PM -0400, Tom Lane wrote:
> Thomas Kellerer <spam_eater@gmx.net> writes:
> > A recent discussion around timestamptz behaviour has lead me to question my own understanding on how a TIMESTAMPTZ
isconverted to the session's time zone.
 
> > I assumed this conversion happens *on the server* before the value is sent to the client.
> 
> It's done in the datatype's output conversion function.
> 
> > A co-worker of mine claims that this is purely a client side thing, and that the server will always send the
"plain"UTC value that is stored in a timestamptz column.
 
> 
> Your co-worker is certainly wrong so far as text output is concerned.
> If you retrieve data in binary format, though, it looks like you get
> the raw (un-rotated) timestamp value, so that any conversion would have
> to be done on the client side.

Wow, I am kind of surprised by that.  Do any other data types have this
behavior?

-- 
  Bruce Momjian  <bruce@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

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