ccsenscloud/game/src/main/resources/mapper_dao/GameUserJoinDao.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.ccsens.game.persist.dao.GameUserJoinDao">
    <resultMap id="resultMap_memberInfo" type="com.ccsens.game.bean.vo.ClientVo$MemberInfo">
        <id column="uId" property="id"/>
        <result column="uHeadImgUrl" property="headImgUrl"/>
        <result column="uNickname" property="nickname"/>
        <result column="uTimes" property="times"/>
        <result column="uScore" property="score"/>
    </resultMap>

    <select id="selectByRecordId" parameterType="java.util.Map" resultMap="resultMap_memberInfo">
        SELECT
          id as uId,
          avatar_url as uHeadImgUrl,
          nickname as uNickname,
          times as uTimes,
          score as uScore
        FROM
          t_game_user_join
        WHERE
          record_id = #{recordId}
    </select>

    <select id="getRanking" resultType="int">
    SELECT rowNo FROM
(
	SELECT user_id,(@rowNum:=@rowNum+1) AS rowNo
	FROM
			(select user_id,score from t_game_user_join where rec_status = 0 and record_id = #{recordId,jdbcType=BIGINT}) a,
			(SELECT(@rowNum:=0)) b
	ORDER BY a.score DESC
) c
WHERE c.user_id= #{userId,jdbcType=BIGINT} limit 1
  </select>
</mapper>