SQL Lead and Lag functions from C# code

Question

Is it possible to use the LEAD or LAG SQL functions from C#?

My preference of method is:

1. Linq to SQL
2. Entity Framewor

Answer 1

Awesome lib linq2db https://github.com/linq2db/linq2db supports Window-Functions with LEAD and LAG:

    from p in db.Parent
    join c in db.Child on p.ParentID equals c.ParentID
    select new
    {
        Diff = Sql.Ext
                  .Lag(x.time, Sql.Nulls.None)
                  .Over()
                  .PartitionBy(p.time.Date)
                  .OrderBy(p.time)
                  .ToValue()
    };