Return multiple aggregate columns in LINQ

Question

I would like to translate the following SQL into LINQ:

SELECT
    (Select count(BidID)) as TotalBidNum,
    (Select sum(Amount)) as TotalBidVal
FROM Bids
         


        

Answer 1

You can write this query using GroupBy. The Lambda expression is as follows:

    var itemsBid = db.Bids
                     .GroupBy( i => 1)
                     .Select( g => new
                     {
                          TotalBidVal = g.Sum(item => item.Amount), 
                          TotalBidNum = g.Count(item => item.BidId)
                     });