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<?xml version="1.0" encoding="ISO-8859-1"?>
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<refentry id="fn_BAG_AGG">
<refmeta>
<refentrytitle>DB.DBA.BAG_AGG</refentrytitle>
<refmiscinfo>aggr</refmiscinfo>
</refmeta>
<refnamediv>
<refname>DB.DBA.BAG_AGG</refname>
<refpurpose>Returns a vector of passed values.</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis id="fsyn_BAG_AGG">
<funcprototype id="fproto_BAG_AGG">
<funcdef>vector <function>DB.DBA.BAG_AGG</function></funcdef>
<paramdef><parameter>value_expression</parameter> any</paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1 id="desc_BAG_AGG"><title>Description</title>
<para><function>DB.DBA.BAG_AGG()</function> returns a vector of passed values.</para>
<para>This is similar to <link linkend="fn_VECTOR_AGG()">DB.DBA.VECTOR_AGG()</link> and returns a vector of
passed values but the order of items in the vector is not predefined and may vary from run to run.</para>
<para>A query with <function>DB.DBA.BAG_AGG()</function> may work faster than a similar query with
<link linkend="fn_VECTOR_AGG()">DB.DBA.VECTOR_AGG()</link> because <function>DB.DBA.BAG_AGG()</function> gives more
freedom to the SQL optimizer. If the order is not important for your application, consider using of <function>DB.DBA.BAG_AGG()</function> .
</para>
</refsect1>
<refsect1 id="params_BAG_AGG"><title>Parameters</title>
<refsect2><title>value_expression</title>
<para>Value of item for aggregation.
</para>
</refsect2>
</refsect1>
<refsect1 id="ret_BAG_AGG"><title>Return Types</title>
<para>Any</para>
</refsect1>
<refsect1 id="examples_BAG_AGG"><title>Examples</title>
<example id="ex_BAG_AGG_1"><title>Simple Use</title>
<programlisting><![CDATA[
SELECT DB.DBA.BAG_AGG (subquery.X)
FROM (SELECT X FROM ... ORDER BY X) as subquery
]]></programlisting>
</example>
</refsect1>
<refsect1 id="seealso_BAG_AGG"><title>See Also</title>
<para><link linkend="fn_XQ_SEQUENCE_AGG">DB.DBA.XQ_SEQUENCE_AGG()</link></para>
<para><link linkend="fn_VECTOR_AGG">DB.DBA.VECTOR_AGG()</link></para>
<para><link linkend="fn_VECTOR_OF_NONNULLS_AGG">DB.DBA.VECTOR_OF_NONNULLS_AGG()</link></para>
<para><link linkend="fn_VECTOR_OR_NULL_AGG">DB.DBA.VECTOR_OR_NULL_AGG()</link></para>
<para><link linkend="fn_VECTOR_OF_NONNULLS_OR_NULL_AGG">DB.DBA.VECTOR_OF_NONNULLS_OR_NULL_AGG()</link></para>
<para><link linkend="fn_VECTOR_CONCAT_AGG">DB.DBA.VECTOR_CONCAT_AGG()</link></para>
<para><link linkend="fn_BAG_OF_NONNULLS_AGG">DB.DBA.BAG_OF_NONNULLS_AGG()</link></para>
<para><link linkend="fn_BAG_OR_NULL_AGG">DB.DBA.BAG_OR_NULL_AGG()</link></para>
<para><link linkend="fn_BAG_OF_NONNULLS_OR_NULL_AGG">DB.DBA.BAG_OF_NONNULLS_OR_NULL_AGG()</link></para>
<para><link linkend="fn_BAG_CONCAT_AGG">DB.DBA.BAG_CONCAT_AGG()</link></para>
<para><link linkend="fn_GROUP_CONCAT">DB.DBA.GROUP_CONCAT()</link></para>
<para><link linkend="fn_GROUP_CONCAT_DISTINCT">DB.DBA.GROUP_CONCAT_DISTINCT()</link></para>
<para><link linkend="fn_GROUP_DIGEST">DB.DBA.GROUP_DIGEST()</link></para>
<para><link linkend="fn_SAMPLE">DB.DBA.SAMPLE()</link></para>
</refsect1>
</refentry>
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