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<?xml version="1.0" encoding="ISO-8859-1"?>
<!--
-
- This file is part of the OpenLink Software Virtuoso Open-Source (VOS)
- project.
-
- Copyright (C) 1998-2018 OpenLink Software
-
- 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
- Free Software Foundation; only version 2 of the License, dated June 1991.
-
- This program is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License along
- with this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
-
-
-->
<refentry id="fn_dayname">
<refmeta>
<refentrytitle>dayname</refentrytitle>
<refmiscinfo>time</refmiscinfo>
</refmeta>
<refnamediv>
<refname>dayname</refname>
<refname>monthname</refname>
<refname>dayofmonth</refname>
<refname>dayofweek</refname>
<refname>dayofyear</refname>
<refname>quarter</refname>
<refname>week</refname>
<refname>month</refname>
<refname>year</refname>
<refname>hour</refname>
<refname>minute</refname>
<refname>second</refname>
<refname>timezone</refname>
<refpurpose>decompose a datetime to its components</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis id="fsyn_dayname">
<funcprototype id="fproto_dayname">
<funcdef><function>dayname</function></funcdef>
<paramdef>in <parameter>dt</parameter> datetime</paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis id="fsyn_monthname">
<funcprototype id="fproto_monthname">
<funcdef><function>monthname</function></funcdef>
<paramdef>in <parameter>dt</parameter> datetime</paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis id="fsyn_dayofmonth">
<funcprototype id="fproto_dayofmonth">
<funcdef><function>dayofmonth</function></funcdef>
<paramdef>in <parameter>dt</parameter> datetime</paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis id="fsyn_dayofweek">
<funcprototype id="fproto_dayofweek">
<funcdef><function>dayofweek</function> </funcdef>
<paramdef>in <parameter>dt</parameter> datetime</paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis id="fsyn_dayofyear">
<funcprototype id="fproto_dayofyear">
<funcdef><function>dayofyear</function></funcdef>
<paramdef>in <parameter>dt</parameter> datetime</paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis id="fsyn_quarter">
<funcprototype id="fproto_quarter">
<funcdef> <function>quarter</function></funcdef>
<paramdef>in <parameter>dt</parameter> datetime</paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis id="fsyn_week">
<funcprototype id="fproto_week">
<funcdef> <function>week</function> </funcdef>
<paramdef>in <parameter>dt</parameter> datetime</paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis id="fsyn_month">
<funcprototype id="fproto_month">
<funcdef> <function>month</function> </funcdef>
<paramdef>in <parameter>dt</parameter> datetime</paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis id="fsyn_year">
<funcprototype id="fproto_year">
<funcdef> <function>year</function> </funcdef>
<paramdef>in <parameter>dt</parameter> datetime</paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis id="fsyn_hour">
<funcprototype id="fproto_hour">
<funcdef> <function>hour</function> </funcdef>
<paramdef>in <parameter>dt</parameter> datetime</paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis id="fsyn_minute">
<funcprototype id="fproto_minute">
<funcdef> <function>minute</function> </funcdef>
<paramdef>in <parameter>dt</parameter> datetime</paramdef>
</funcprototype></funcsynopsis>
<funcsynopsis id="fsyn_second">
<funcprototype id="fproto_second">
<funcdef><function>second</function> </funcdef>
<paramdef>in <parameter>dt</parameter> datetime</paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis id="fsyn_timezone">
<funcprototype id="fproto_timezone">
<funcdef><function>timezone</function> </funcdef>
<paramdef>in <parameter>dt</parameter> datetime</paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1 id="desc_dayname"><title>Description</title>
<para>These functions decompose a <type>datetime</type> to its components. These can be used on <type>timestamps</type>, <type>datetimes</type>, <type>dates</type> and <type>times</type>, all being the same internal data type.</para>
<programlisting>
: dayname name of day
: monthname name of month
: dayofmonth day of month
: dayofweek day of week
: dayofyear day since start of year
: quarter quarter number,
: week week number
: month month number, starting at 1 for January
: year year
: hour hour
: minute minute
: second second
: timezone offset from UTC in minutes
</programlisting>
</refsect1>
<refsect1 id="params_dayname"><title>Parameters</title>
<refsect2><title><parameter>dt</parameter></title>
<para>A <type>datetime</type> value.</para>
</refsect2>
</refsect1>
<refsect1 id="ret_dayname"><title>Return Values</title>
<para><function>monthname</function> and <function>dayname</function>
return a <type>varchar</type>. The others return an
<type>integer</type>.</para>
</refsect1>
<refsect1 id="examples_dayname"><title>Examples</title>
<example id="ex_dayname_1"><title>Simple example</title>
<screen>SQL> select dayname(stringdate('2001-03-02'));
callret
VARCHAR
_______________________________________________________________________________
Friday
1 Rows. -- 3 msec.
</screen>
</example>
</refsect1>
<refsect1 id="seealso_dayname"><title>See Also</title>
<para>
<link linkend="fn_datestring"><function>stringdate</function>,
<function>datestring</function>,
<function>datestring_GMT</function></link>,
<link linkend="DTTIMESTAMP">The <type>TIMESTAMP</type> datatype</link>
</para>
</refsect1>
</refentry>
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