Laravel加入与在内部不工作

Question

条件，使我的数据库有两个表名为球员和团队，每个表都有competitionId和teamId场，所以我的目标是获得competitionId一队基地的所有球员和teamId队表。它只返回一个空数组。

public static function getTeamRoster($competitionId, $teamId) { 
     return DB::table('teams as team') 
       ->where('team.competitionId', $competitionId) 
       ->where('team.teamId', $teamId) 
       ->join('players as player', function($join){ 
        $join->on('team.competitionId', '=', 'player.competitionId') 
         ->where('player.teamId', 'team.teamId'); 
       }) 
       ->get(); 
    } 

Answer 1

尝试以下方法修改其功能是否带给你预期的结果，如果不是请具体谈谈您的要求，

public static function getTeamRoster($competitionId, $teamId) { 
    return DB::table('players AS player') 
     ->join('teams AS team','player.teamId','=','team.teamId') 
     ->where('team.competitionId', $competitionId) 
     ->where('team.teamId', $teamId) 
     ->get(); 
}