<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.casic.missiles.mapper.meter.MeterFileMapper">

    <select id="selectMaxFileNo" resultType="java.lang.Long">
        SELECT IFNULL(max(RIGHT(file_no, 12)), 0) from meter_file
    </select>

    <update id="updateEffectiveStatusByTime">
        UPDATE meter_file
        SET effective_status =
        CASE
            WHEN DATE_FORMAT(NOW(), '%Y-%m-%d') &lt; DATE_FORMAT(effectiveTime, '%Y-%m-%d') THEN 2
            WHEN DATE_FORMAT(NOW(), '%Y-%m-%d') &gt;= DATE_FORMAT(effectiveTime, '%Y-%m-%d') THEN 1
            ELSE effective_status
        END
        WHERE effective_status &lt;&gt; 3
    </update>
</mapper>