<query id="updateLangCode" action="update">
	<tables>
		<table name="lang" />
	</tables>
	<columns>
		<column name="lang_code" var="new_lang_code" notnull="notnull" />
	</columns>
    <conditions>
        <condition operation="equal" column="lang_code" var="lang_code" notnull="notnull" />
    </conditions>
</query>