publicinterfaceAllianceDiscountsActivityMapper{intcheckAllianceDiscountActivity();}<update id="checkAllianceDiscountActivity" parameterType="java.lang.String">
update alliance set status=3 WHERE start_time <![CDATA[<=]]>NOW() and is_del=0 and status=1;
update alliance set status=2 WHERE end_time <![CDATA[<=]]>NOW() and is_del=0 and status=3;</update>