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<?xml version="1.0" encoding="ISO-8859-1"?>
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-->
<refentry id="fn_concat">
<refmeta>
<refentrytitle>concat</refentrytitle>
<refmiscinfo>array</refmiscinfo>
</refmeta>
<refnamediv>
<refname>concat</refname>
<refpurpose>Concatenate strings</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis id="fsyn_concat">
<funcprototype id="fproto_concat">
<funcdef> <function>concat</function> </funcdef>
<paramdef> <parameter>str1</parameter> varchar</paramdef>
<paramdef> <parameter>str2</parameter> varchar</paramdef>
<paramdef> <parameter>...</parameter> </paramdef>
<paramdef> <parameter>strn</parameter> varchar</paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1 id="desc_concat"><title>Description</title>
<para><function>concat</function> returns a new <type>string</type>,
concatenated from a variable number of strings given as
arguments. NULL arguments are handled as empty strings.</para>
<para><programlisting>concat (str)</programlisting> returns a copy of
<parameter>str</parameter>. </para>
<para><programlisting>concat ()</programlisting> returns an empty
<type>string</type>.</para>
</refsect1>
<refsect1 id="params_concat"><title>Parameters</title>
<para>Concat takes a variable number of <type>string</type>
arguments.</para>
</refsect1>
<refsect1 id="ret_concat"><title>Return types</title>
<para>The <function>concat</function> returns a single
<type>string</type>. If there are <type>wide strings</type> amongst
the arguments, the string returned will also be
<type>wide</type>.</para></refsect1>
<refsect1 id="err_concat"><title>Errors</title>
<table><title>Errors signalled by concat()</title>
<tgroup cols="3">
<tbody>
<row>
<entry>sqlstate</entry><entry>error code</entry><entry>error text</entry>
</row>
<row>
<entry><errorcode>22023</errorcode></entry>
<entry><errorcode>SR007</errorcode></entry>
<entry><errorname>Function concat needs a string or NULL as argument
<argument number>, not an arg of
type <offending type></errorname></entry>
</row>
</tbody>
</tgroup>
</table>
</refsect1>
<refsect1 id="examples_concat"><title>Examples</title>
<example id="ex_concat_1"><title>Simple Example</title>
<para>Cross a mule with an ass.</para>
<screen>SQL> select concat ('Muuli', 'aasi');
callret
VARCHAR
_______________________________________________________________________________
Muuliaasi
1 Rows. -- 4 msec.
</screen>
</example>
</refsect1>
<!--
<refsect1 id="seealso"><title>See Also</title>
<para><link linkend="fn_"></link></para>
</refsect1>
-->
</refentry>
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