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<?xml version="1.0" encoding="ISO-8859-1"?>
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<refentry id="fn_VECTOR_OF_NONNULLS_AGG">
<refmeta>
<refentrytitle>DB.DBA.VECTOR_OF_NONNULLS_AGG</refentrytitle>
<refmiscinfo>aggr</refmiscinfo>
</refmeta>
<refnamediv>
<refname>DB.DBA.VECTOR_OF_NONNULLS_AGG</refname>
<refpurpose>Returns a vector of passed values ingoring NULL arguments.</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis id="fsyn_VECTOR_OF_NONNULLS_AGG">
<funcprototype id="fproto_VECTOR_OF_NONNULLS_AGG">
<funcdef>vector <function>DB.DBA.VECTOR_OF_NONNULLS_AGG</function></funcdef>
<paramdef><parameter>value_expression</parameter> any</paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1 id="desc_VECTOR_OF_NONNULLS_AGG"><title>Description</title>
<para><function>DB.DBA.VECTOR_OF_NONNULLS_AGG</function> returns a vector of passed values.
Similar to <link linkend="fn_VECTOR_AGG()"><function>DB.DBA.VECTOR_AGG()</function></link> but ignores NULL arguments.</para>
<para>The order of items in the vector repeats the order of passing individual values to the aggregate.</para>
</refsect1>
<refsect1 id="params_VECTOR_OF_NONNULLS_AGG"><title>Parameters</title>
<refsect2><title>value_expression</title>
<para>Value of item for aggregation.
</para>
</refsect2>
</refsect1>
<refsect1 id="ret_VECTOR_OF_NONNULLS_AGG"><title>Return Types</title>
<para>Any
</para>
</refsect1>
<refsect1 id="examples_VECTOR_OF_NONNULLS_AGG"><title>Examples</title>
<example id="ex_VECTOR_OF_NONNULLS_AGG_1"><title>Simple Use</title>
<para>As the order of items in the vector repeats the order of passing individual values to the aggregate,
it is possible to write, for instance:
</para>
<programlisting><![CDATA[
-- Get an ordered vector of X-es
SELECT DB.DBA.VECTOR_OF_NONNULLS_AGG (subquery.X)
FROM (SELECT X FROM ... ORDER BY X) as subquery
]]></programlisting>
<para>or</para>
<programlisting><![CDATA[
SELECT DB.DBA.VECTOR_OF_NONNULLS_AGG (subquery.Y)
FROM (SELECT Y FROM ... ORDER BY X) as subquery
]]></programlisting>
<para>and get vector of Y-s that are ordered by matching values of X-es.</para>
</example>
</refsect1>
<refsect1 id="seealso_VECTOR_OF_NONNULLS_AGG"><title>See Also</title>
<para><link linkend="fn_VECTOR_AGG"><function>DB.DBA.VECTOR_AGG()</function></link></para>
<para><link linkend="fn_VECTOR_OR_NULL_AGG"><function>DB.DBA.VECTOR_OR_NULL_AGG()</function></link></para>
<para><link linkend="fn_VECTOR_OF_NONNULLS_OR_NULL_AGG"><function>DB.DBA.VECTOR_OF_NONNULLS_OR_NULL_AGG()</function></link></para>
<para><link linkend="fn_VECTOR_CONCAT_AGG"><function>DB.DBA.VECTOR_CONCAT_AGG()</function></link></para>
<para><link linkend="fn_BAG_AGG"><function>DB.DBA.BAG_AGG()</function></link></para>
<para><link linkend="fn_BAG_OF_NONNULLS_AGG"><function>DB.DBA.BAG_OF_NONNULLS_AGG()</function></link></para>
<para><link linkend="fn_BAG_OR_NULL_AGG"><function>DB.DBA.BAG_OR_NULL_AGG()</function></link></para>
<para><link linkend="fn_BAG_OF_NONNULLS_OR_NULL_AGG"><function>DB.DBA.BAG_OF_NONNULLS_OR_NULL_AGG()</function></link></para>
<para><link linkend="fn_BAG_CONCAT_AGG"><function>DB.DBA.BAG_CONCAT_AGG()</function></link></para>
<para><link linkend="fn_GROUP_CONCAT"><function>DB.DBA.GROUP_CONCAT()</function></link></para>
<para><link linkend="fn_GROUP_CONCAT_DISTINCT"><function>DB.DBA.GROUP_CONCAT_DISTINCT()</function></link></para>
<para><link linkend="fn_GROUP_DIGEST"><function>DB.DBA.GROUP_DIGEST()</function></link></para>
<para><link linkend="fn_SAMPLE"><function>DB.DBA.SAMPLE()</function></link></para>
</refsect1>
</refentry>
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