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<h1>22. Virtuoso Functions Guide - VT_BATCH_UPDATE</h1>
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<h2>VT_BATCH_UPDATE</h2>
<div class="refpurpose">Set batch mode update of free text indexing.</div>
<div class="funcsynopsis">
<span class="funcdef">integer DB.DBA.<span class="function">VT_BATCH_UPDATE</span>
</span>
(<span class="paramdef">in <span class="parameter">table</span> varchar</span>,
<span class="paramdef">in <span class="parameter">flag</span> varchar</span>,
<span class="paramdef">in <span class="parameter">interval_minutes</span> integer</span>);
</div>
<div class="refsect1">
<div class="refsect1title">Description</div>
<p>
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.
</p>
</div>
<div class="refsect1">
<div class="refsect1title">Parameters</div>
<div class="refsect2">
<span class="refsect2title">table – </span>
the name of the table to perform batch updating of.</div>
<div class="refsect2">
<span class="refsect2title">flag – </span>
If ON, updates are in batch mode, if OFF, they are synchronous.</div>
<div class="refsect2">
<span class="refsect2title">interval_minutes – </span>
the update interval. NULL means that updates are not scheduled.</div>
</div>
<div class="refsect1">
<div class="refsect1title">Return Types</div>
<p />
</div>
<div class="refsect1title">Errors</div>
<table class="data">
<tr>
<th class="data">SQLState</th>
<th class="data">Error Code</th>
<th class="data">Error Text</th>
<th class="data">Description</th>
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<br />
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<div class="refsect1">
<div class="refsect1title">Examples</div>
<a name="ex_vt_batch_update" />
<div class="example">
<div class="exampletitle" />
<p />
<div>
<pre class="screen" />
</div>
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<div class="refsect1">
<div class="refsect1title">See Also</div>
<p>
<a href="fn_vt_drop_ftt.html">vt_drop_ftt</a>
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<a href="fn_vt_batch.html">vt_batch</a>
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<a href="fn_vt_create_text_index.html">vt_create_text_index</a>
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<a href="fn_vt_batch_feed.html">vt_batch_feed</a>
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