esua-epdc-cloud/esua-epdc/epdc-module/epdc-user/epdc-user-server/src/main/resources/mapper/UserGridRelationDao.xml

<?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.elink.esua.epdc.dao.UserGridRelationDao">

    <select id="selectOneOfGird" resultType="com.elink.esua.epdc.dto.UserGridRelationDTO">
        SELECT
            *
        FROM
            `epdc_user_grid_relation`
        WHERE
            USER_ID = #{userId}
            AND DEL_FLAG = '0'
        ORDER BY
            SWITCHED_TIME DESC
            LIMIT 1
    </select>

</mapper>