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

It was somewhat confusing to see that your query didn't seem to correspond to the data. So instead, this will be based on the data alone. The query should produce valid SQL so you won't have to use LINQ to Objects. You can adapt it to your tables with little modification.

var query = from pred in Predictions
            group pred.Points by pred.WeekNum into week
            join pred in Predictions
                on new { WeekNum = week.Key, Points = week.Max() }
                equals new { pred.WeekNum, pred.Points }
            group 1 by pred.Player into player
            let Wins = player.Count()
            orderby Wins descending, player.Key
            select new
            {
                Player = player.Key,
                Wins,
            };