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<?xml version="1.0" encoding="ISO-8859-1"?>
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<refentry id="fn_vt_batch_update">
<refmeta>
<refentrytitle>VT_BATCH_UPDATE</refentrytitle>
<refmiscinfo>ft</refmiscinfo>
</refmeta>
<refnamediv>
<refname>VT_BATCH_UPDATE</refname>
<refpurpose>Set batch mode update of free text indexing.</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis id="fsyn_vt_batch_update">
<funcprototype id="fproto_vt_batch_update">
<funcdef>integer DB.DBA.<function>VT_BATCH_UPDATE</function></funcdef>
<paramdef>in <parameter>table</parameter> varchar</paramdef>
<paramdef>in <parameter>flag</parameter> varchar</paramdef>
<paramdef>in <parameter>interval_minutes</parameter> integer</paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1 id="desc_vt_batch_update"><title>Description</title>
<para>
This function controls the time of update of a text index. If flag is ON, changes are accumulated
into a change tracking table and applied as a batch. If flag is OFF, the text index is updated
in the same transaction as the indexed data itself. The change tracking table is automatically
created and is named VTLOG_<q>_<o>_<table>, in the qualifier and owner of
the indexed table, where q, o and table are the qualifier, owner and name of the table.
The changes accumulated into that table can be explicitly applied to the
index using the VT_INC_INDEX_<q>_<o>_<table> function.
</para>
</refsect1>
<refsect1 id="params_vt_batch_update"><title>Parameters</title>
<refsect2><title>table</title>
<para>the name of the table to perform batch updating of.</para></refsect2>
<refsect2><title>flag</title>
<para>If ON, updates are in batch mode, if OFF, they are synchronous.</para></refsect2>
<refsect2><title>interval_minutes</title>
<para>the update interval. NULL means that updates are not scheduled.</para></refsect2>
</refsect1>
<refsect1 id="errors_vt_batch_update"><title>Errors</title>
<table><title>Errors signalled by</title>
<tgroup cols="4">
<thead><row><entry>SQLState</entry><entry>Error Code</entry><entry>Error Text</entry><entry>Description</entry></row></thead>
<tbody>
<row>
<entry><errorcode></errorcode></entry>
<entry><errorcode></errorcode></entry>
<entry><errorname></errorname></entry>
<entry></entry>
</row>
</tbody>
</tgroup>
</table>
</refsect1>
<refsect1 id="seealso_vt_batch_update"><title>See Also</title>
<para><link linkend="fn_vt_drop_ftt">vt_drop_ftt()</link></para>
<para><link linkend="fn_vt_batch">vt_batch()</link></para>
<para><link linkend="fn_vt_create_text_index">vt_create_text_index()</link></para>
<para><link linkend="fn_vt_batch_feed">vt_batch_feed()</link></para>
</refsect1>
</refentry>
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