<query id="updateAddon" action="update">
    <tables>
      <table name="addons" />
    </tables>
    <columns>
      <column name="is_used" var="is_used" />
      <column name="is_used_m" var="is_used_m" />
      <column name="extra_vars" var="extra_vars" />
    </columns>
    <conditions>
        <condition operation="equal" column="addon" var="addon" notnull="notnull" />
    </conditions>
</query>
