Translate SQL to lambda LINQ with GroupBy and Average

Question

I spend a few hours trying to translate simple SQL to lambda LINQ

SELECT ID, AVG(Score) FROM myTable
GROUP BY ID

Any idea?

Answer 1

var _result =   from a in myTable
                group a by a.ID into g
                select new
                {
                    ID = g.Key.ID,
                    AverageResult = g.Average(x => x.Score)
                }