LINQ Query with grouping and ranking

Question

I have a sql table called predictions with data as below

Week    Player     Points
201101  Mark       7
201101  Mark       7
201101  Pete       7
201101  Pet         


        

Answer 1

mine is quite long

var weeklyTopScore = from eachMatch in FootballPredictions
                     group eachMatch by eachMatch.week
                     into weekly
                     select new {week = weekly.Key, topScore = weekly.Max(match => match.points)};

var playerWins = from eachResult in weeklyTopScore
                 join entry in FootballPredictions
                 on eachResult.week equals entry.week
                 where eachResult.topScore == entry.points
                 group entry by entry.player
                 into winner
                 select new { player = winner.Key, wins = winner.Count() };

var result = from entry in playerWins
             group entry by entry.wins
             into summary
             select new { player = summary.Select(data => data.player).Aggregate((cur, nex) => cur + ", " + nex), wins = summary.Key};