LINQ to SQL Select Distinct by Multiple Columns and return entire entity

Question

I am working with a third party database and need to select a distinct set of data for the specific market that I am looking into. The data is the same for each market, so i

Answer 1

You could use group by with the properties that you want to be distinct, then select the first item of each group:

determinantData = (from x in dbContext.Datas
                   where x.Bar.Name.Equals(barName) &&
                         x.Something.Name.Equals(someName) &&
                         FooIds.Contains(x.Foo.Id) &&
                         x.Date >= startDate && 
                         x.Date <= endDate
                   group x by new { x.Foo, x.Bar, x.Something } into market 
                   select market).Select( g=> g.First());