Delete duplicates using Lambda

Question

I need some help using a lambda expression to remove duplicate entries in my Entity Framework context. I have a table with the following columns:

Id, DateOfIncide

Answer 1

var query = db.Incidents.Where(x => x.IsAttendanceIncident == "Y").GroupBy(x => new { x.EmployeeId, x.DateOfIncident, x.IsAttendanceIncident })
     .SelectMany(x => x.Skip(1));