Laravel如何获得两个结果值的平均值

Question

所以我有一个查询，返回从他们上个赛季和当前赛季的球员的所有数据。我想要做的是从上赛季和本赛季获得一名球员的平均水平，并且仅限于一个对象。以下是我的查询和示例结果。

查询

public static function getAllTimeLeaders($request) { 
     $competitionIds = self::getLasTwoSeason(); 
     $data = DB::table('leader_board_stats as lbs') 
      ->select([ 
       'sGamesStarted', 
       'sMinutesAverage', 
       'sPointsAverage', 
       'sFieldGoalsMadeAverage', 
       'sFieldGoalsAttemptedAverage', 
       'sFieldGoalsPercentage', 
       'sTwoPointersMadeAverage', 
       'sTwoPointersAttemptedAverage', 
       'sThreePointersMadeAverage', 
       'sThreePointersAttemptedAverage', 
       'sThreePointersPercentage', 
       'sFreeThrowsMadeAverage', 
       'sFreeThrowsAttemptedAverage', 
       'sReboundsTotalAverage', 
       'sAssistsAverage', 
       'sStealsAverage', 
       'sBlocksAverage', 
       'sTurnoversAverage', 
       'sFoulsPersonalAverage', 
       'firstName', 
       'familyName', 
       'personId', 
       'teamId', 
       'competitionId' 
      ]) 
      ->where('lbs.periodNumber', '0') 
      ->whereIn('lbs.competitionId', [$competitionIds[0]->competitionId, $competitionIds[1]->competitionId]) 
      ->get(); 
     echo '<pre>'; 
     var_dump($data); 
    } 

样品返回值的

[ 
    [0]=> object(stdClass)#262 (24) { 
     ["sGamesStarted"]=> 
     int(6) 
     ["sMinutesAverage"]=> 
     float(17.66) 
     ["sPointsAverage"]=> 
     float(7.71) 
     ["sFieldGoalsMadeAverage"]=> 
     float(2.59) 
     ["sFieldGoalsAttemptedAverage"]=> 
     float(5.62) 
     ["sFieldGoalsPercentage"]=> 
     float(0.46) 
     ["sTwoPointersMadeAverage"]=> 
     float(1.47) 
     ["sTwoPointersAttemptedAverage"]=> 
     float(2.53) 
     ["sThreePointersMadeAverage"]=> 
     float(1.12) 
     ["sThreePointersAttemptedAverage"]=> 
     float(3.09) 
     ["sThreePointersPercentage"]=> 
     float(0.36) 
     ["sFreeThrowsMadeAverage"]=> 
     float(1.41) 
     ["sFreeThrowsAttemptedAverage"]=> 
     float(1.76) 
     ["sReboundsTotalAverage"]=> 
     float(2.85) 
     ["sAssistsAverage"]=> 
     float(1.71) 
     ["sStealsAverage"]=> 
     float(0.68) 
     ["sBlocksAverage"]=> 
     float(0.21) 
     ["sTurnoversAverage"]=> 
     float(0.91) 
     ["sFoulsPersonalAverage"]=> 
     float(2.35) 
     ["firstName"]=> 
     string(3) "Person1" 
     ["familyName"]=> 
     string(8) "Familyname" 
     ["personId"]=> 
     int(28831) 
     ["teamId"]=> 
     int(3749) 
     ["competitionId"]=> 
     int(9224) 
    }, 
    [88]=> object(stdClass)#527 (24) { 
     ["sGamesStarted"]=> 
     int(11) 
     ["sMinutesAverage"]=> 
     float(23.28) 
     ["sPointsAverage"]=> 
     float(9.5) 
     ["sFieldGoalsMadeAverage"]=> 
     float(3.07) 
     ["sFieldGoalsAttemptedAverage"]=> 
     float(7.97) 
     ["sFieldGoalsPercentage"]=> 
     float(0.38) 
     ["sTwoPointersMadeAverage"]=> 
     float(1.4) 
     ["sTwoPointersAttemptedAverage"]=> 
     float(3.47) 
     ["sThreePointersMadeAverage"]=> 
     float(1.67) 
     ["sThreePointersAttemptedAverage"]=> 
     float(4.5) 
     ["sThreePointersPercentage"]=> 
     float(0.37) 
     ["sFreeThrowsMadeAverage"]=> 
     float(1.7) 
     ["sFreeThrowsAttemptedAverage"]=> 
     float(2.2) 
     ["sReboundsTotalAverage"]=> 
     float(3.57) 
     ["sAssistsAverage"]=> 
     float(1.43) 
     ["sStealsAverage"]=> 
     float(0.93) 
     ["sBlocksAverage"]=> 
     float(0.23) 
     ["sTurnoversAverage"]=> 
     float(0.97) 
     ["sFoulsPersonalAverage"]=> 
     float(2.77) 
     ["firstName"]=> 
     string(3) "Person1" 
     ["familyName"]=> 
     string(8) "Familyname" 
     ["personId"]=> 
     int(28831) 
     ["teamId"]=> 
     int(3749) 
     ["competitionId"]=> 
     int(2254) 
    } 
] 

Answer 1

尝试：avg（）更简单，更清洁。

文档：https://laravel.com/docs/5.4/collections#method-avg

Answer 2

最后我想通了我只需要使用DB ::每个统计领域的原材料和AVG然后它组由personId。

public static function getAllTimeLeaders($request) { 
     $competitionIds = self::getLasTwoSeason(); 
     $data = DB::table('leader_board_stats as lbs') 
      ->select([ 
       DB::raw('AVG(sGamesStarted)'), 
       DB::raw('AVG(sMinutesAverage)'), 
       DB::raw('AVG(sPointsAverage)'), 
       DB::raw('AVG(sFieldGoalsMadeAverage)'), 
       DB::raw('AVG(sFieldGoalsAttemptedAverage)'), 
       DB::raw('AVG(sFieldGoalsPercentage)'), 
       DB::raw('AVG(sTwoPointersMadeAverage)'), 
       DB::raw('AVG(sTwoPointersAttemptedAverage)'), 
       DB::raw('AVG(sThreePointersMadeAverage)'), 
       DB::raw('AVG(sThreePointersAttemptedAverage)'), 
       DB::raw('AVG(sThreePointersPercentage)'), 
       DB::raw('AVG(sFreeThrowsMadeAverage)'), 
       DB::raw('AVG(sFreeThrowsAttemptedAverage)'), 
       DB::raw('AVG(sReboundsTotalAverage)'), 
       DB::raw('AVG(sAssistsAverage)'), 
       DB::raw('AVG(sStealsAverage)'), 
       DB::raw('AVG(sBlocksAverage)'), 
       DB::raw('AVG(sTurnoversAverage)'), 
       DB::raw('AVG(sFoulsPersonalAverage)'), 
       'firstName', 
       'familyName', 
       'personId', 
       'teamId', 
       'competitionId' 
      ]) 
      ->where('lbs.periodNumber', '0') 
      ->whereIn('lbs.competitionId', [$competitionIds[0]->competitionId, $competitionIds[1]->competitionId]) 
      ->groupBy('lbs.personId') 
      ->get(); 

     dd($data); 
    }