Entity Framework multiple counts with a single query

Question

Sorry if this has been asked, but how can I improve the following with a single call to the database?

var statsModel = new
{
     Total = _db.Messages.Count(         


        

Answer 1

In C# (rather than LINQ query), async syntax:

var statsModel = await _db.Messages
.GroupBy(m => 1, (g, mm) => new
{
    Total = mm.Count(),
    Approved = mm.Count(m => m.Approved),
    Rejected = mm.Count(m => !m.Approved)
})
.SingleAsync();