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<?xml version="1.0" encoding="ISO-8859-1"?>
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- Copyright (C) 1998-2018 OpenLink Software
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- This project is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the
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-->
<refentry id="fn_timezone">
<refmeta>
<refentrytitle>timezone</refentrytitle>
<refmiscinfo>dconv</refmiscinfo>
<refmiscinfo>time</refmiscinfo>
</refmeta>
<refnamediv>
<refname>timezone</refname>
<refpurpose>get timezone difference from a datetime</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis id="fsyn_timezone">
<funcprototype id="fproto_timezone">
<funcdef><function>timezone</function></funcdef>
<paramdef>in <parameter>dt</parameter> datetime</paramdef>
<paramdef><optional>in <parameter>ignore_timezone</parameter> integer</optional></paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1 id="desc_timezone"><title>Description</title>
<para>The function returns timezone offset of its first argument, as an integer value in minutes. If the first argument
is timezoneless and second argument is missing or zero then the returned value is NULL. If the first argument is
timezoneless and second argument is nonzero then the returned value is 0.</para>
</refsect1>
<refsect1 id="params_timezone"><title>Parameters</title>
<refsect2><title>dt</title>
<para>A <type>datetime</type>.</para>
</refsect2>
<refsect2>
<title>ignore_timezone</title>
<para>Flag</para>
</refsect2>
</refsect1>
<refsect1 id="examples_timezone"><title>Examples</title>
<example id="ex_timezone"><title>Simple example</title>
<para>Get current timezone.</para>
<screen>
SQL> select timezone (now ());
callret
INTEGER
_______________________________________________________________________________
120
</screen>
</example>
</refsect1>
<refsect1 id="seealso_timezone"><title>See Also</title>
<para><link linkend="fn_now"><function>now</function></link></para>
<para><link linkend="fn_forget_timezone"><function>forget_timezone</function></link></para>
<para><link linkend="fn_is_timezoneless"><function>is_timezoneless</function></link></para>
<para><link linkend="fn_adjust_timezone"><function>adjust_timezone</function></link></para>
<para><link linkend="fn_rdf_now_impl"><function>rdf_now_impl</function></link></para>
<para><link linkend="fn_current_timestamp"><function>current_timestamp</function></link></para>
<para><link linkend="fn_curdatetime"><function>curdatetime</function></link></para>
<para><link linkend="fn_curdatetimeoffset"><function>curdatetimeoffset</function></link></para>
<para><link linkend="fn_curutcdatetime"><function>curutcdatetime</function></link></para>
<para><link linkend="fn_sysutcdatetime"><function>sysutcdatetime</function></link></para>
<para><link linkend="fn_dayname"><function>dayname</function></link></para>
<para><link linkend="fn_dayofmonth"><function>dayofmonth</function></link></para>
<para><link linkend="fn_dayofweek"><function>dayofweek</function></link></para>
<para><link linkend="fn_dayofyear"><function>dayofyear</function></link></para>
<para><link linkend="fn_quarter"><function>quarter</function></link></para>
<para><link linkend="fn_week"><function>week</function></link></para>
<para><link linkend="fn_month"><function>month</function></link></para>
<para><link linkend="fn_year"><function>year</function></link></para>
<para><link linkend="fn_hour"><function>hour</function></link></para>
<para><link linkend="fn_minute"><function>minute</function></link></para>
<para><link linkend="fn_second"><function>second</function></link></para>
</refsect1>
</refentry>
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