Thomas Kellerer <spam_ea...@gmx.net> writes:
> A recent discussion around timestamptz behaviour has lead me to question my
> own understanding on how a TIMESTAMPTZ is converted 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.
regards, tom lane
