zz_backend/zhongzheng-system/src/main/resources/mapper/modules/user/UserMapper.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.zhongzheng.modules.user.mapper.UserMapper">

    <resultMap type="com.zhongzheng.modules.user.domain.User" id="UserResult">
        <result property="userId" column="user_id"/>
        <result property="userAccout" column="user_accout"/>
        <result property="nickname" column="nickname"/>
        <result property="realname" column="realname"/>
        <result property="sex" column="sex"/>
        <result property="idCard" column="id_card"/>
        <result property="telphone" column="telphone"/>
        <result property="userLevel" column="user_level"/>
        <result property="userBirth" column="user_birth"/>
        <result property="eduLevel" column="edu_level"/>
        <result property="schoolId" column="school_id"/>
        <result property="major" column="major"/>
        <result property="entranceTime" column="entrance_time"/>
        <result property="openId" column="open_id"/>
        <result property="studentCertificateImg" column="student_certificate_img"/>
        <result property="idCardImg1" column="id_card_img1"/>
        <result property="idCardImg2" column="id_card_img2"/>
        <result property="country" column="country"/>
        <result property="province" column="province"/>
        <result property="city" column="city"/>
        <result property="integral" column="integral"/>
        <result property="createTime" column="create_time"/>
        <result property="updateTime" column="update_time"/>
        <result property="status" column="status"/>
        <result property="unionId" column="union_id"/>
        <result property="registerPlat" column="register_plat"/>
        <result property="lastLoginIp" column="last_login_ip"/>
        <result property="lastLoginTime" column="last_login_time"/>
        <result property="certified" column="certified"/>
        <result property="certifiedTime" column="certified_time"/>
        <result property="district" column="district"/>
        <result property="marry" column="marry"/>
        <result property="houseProvince" column="house_province"/>
        <result property="houseCity" column="house_city"/>
        <result property="houseDistrict" column="house_district"/>
        <result property="oneInchPhotos" column="one_inch_photos"/>
        <result property="politic" column="politic"/>
        <result property="email" column="email"/>
        <result property="avatar" column="avatar"/>
    </resultMap>


    <resultMap type="com.zhongzheng.modules.user.vo.RanKingUser" id="RanKingUserResult">
        <result property="hourse" column="sum_study"/>
        <result property="avatar" column="avatar"/>
        <result property="nickname" column="nickname"/>
        <result property="rank" column="pm"/>
    </resultMap>



    <select id="selectByRank" parameterType="com.zhongzheng.modules.user.bo.RanKingUserQuery" resultMap="RanKingUserResult">
        SELECT sum(s.study_duration) AS sum_study,u.nickname,u.avatar   FROM `user` u
            LEFT JOIN user_study_record s ON u.user_id=s.user_id where 1=1
        <if test="userId != null and userId != ''">
            AND u.user_id = #{userId}
        </if>
        <if test="userId != null and userId != ''">
            AND s.create_time BETWEEN #{startTime} and #{endTime}
        </if>
        GROUP BY u.user_id
    </select>

    <select id="selectByRanks" parameterType="com.zhongzheng.modules.user.bo.RanKingUserQuery" resultMap="RanKingUserResult">
        SELECT A.*,@rank:=@rank+1 as pm
        FROM
            (
            SELECT sum(s.study_duration) AS sum_study,u.nickname,u.avatar  FROM `user` u
            LEFT JOIN user_study_record s ON u.user_id=s.user_id where 1=1
        <if test="userId != null and userId != ''">
            AND s.create_time BETWEEN #{startTime} and #{endTime}
        </if>
            GROUP BY u.user_id ORDER BY sum_study desc LIMIT 20
            ) A ,(SELECT @rank:=0) B
    </select>


</mapper>