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doc: Mention timezone(zone, time) in section for AT TIME ZONE 

timezone(zone, timestamp) is already mentioned as an equivalent of the
two first patterns in the table describing the AT TIME ZONE variants,
but did not mention the third case about "time" and its equivalent as an
SQL function, so let's be consistent here.

Extracted from a larger patch by the same author.

Author: Vik Fearing
Discussion: https://postgr.es/m/8e25dec4-5667-c1a5-6581-167d710c2182@postgresfriends.org
This commit is contained in:
Michael Paquier 2023-10-13 10:55:25 +09:00
parent df9a3d4e99
commit 7e1f544827
1 changed files with 7 additions and 0 deletions
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doc/src/sgml/func.sgml
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@ -10738,6 +10738,13 @@ SELECT TIMESTAMP '2001-02-16 20:38:40' AT TIME ZONE 'Asia/Tokyo' AT TIME ZONE 'A
<literal><replaceable>timestamp</replaceable> AT TIME ZONE
<replaceable>zone</replaceable></literal>.
</para>
<para>
The function <literal><function>timezone</function>(<replaceable>zone</replaceable>,
<replaceable>time</replaceable>)</literal> is equivalent to the SQL-conforming construct
<literal><replaceable>time</replaceable> AT TIME ZONE
<replaceable>zone</replaceable></literal>.
</para>
</sect2>
<sect2 id="functions-datetime-current">