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Document named zone support for timestamp with time zone #13927

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hashhar merged 1 commit into from
Sep 26, 2022
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Document named zone support for timestamp with time zone #13927

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22 changes: 19 additions & 3 deletions docs/src/main/sphinx/language/types.rst
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Expand Up @@ -262,11 +262,27 @@ The following examples illustrate the behavior::
Instant in time that includes the date and time of day with ``P`` digits of
precision for the fraction of seconds and with a time zone. Values of this
type are rendered using the time zone from the value.
Time zones are expressed as the numeric UTC offset value::
Time zones can be expressed in the following ways:

* ``UTC``, with ``GMT``, ``Z``, or ``UT`` usable as aliases for UTC.
* ``+hh:mm`` or ``-hh:mm`` with ``hh:mm`` as an hour and minute offset from UTC.
Can be written with or without ``UTC``, ``GMT``, or ``UT`` as an alias for
UTC.
* An `IANA time zone name <https://www.iana.org/time-zones>`_.

The following examples demonstrate some of these syntax options::

SELECT TIMESTAMP '2001-08-22 03:04:05.321 UTC';
-- 2001-08-22 03:04:05.321 UTC

SELECT TIMESTAMP '2001-08-22 03:04:05.321 -08:30';
-- 2001-08-22 03:04:05.321 -08:30

TIMESTAMP '2001-08-22 03:04:05.321 -08:00';
-- 2001-08-22 03:04:05.321-08:00
SELECT TIMESTAMP '2001-08-22 03:04:05.321 GMT-08:30';
-- 2001-08-22 03:04:05.321 -08:30

SELECT TIMESTAMP '2001-08-22 03:04:05.321 America/New_York';
-- 2001-08-22 03:04:05.321 America/New_York

``INTERVAL YEAR TO MONTH``
^^^^^^^^^^^^^^^^^^^^^^^^^^
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