Following section demonstrates how to read record(s) as Datatable by using TSQL.
// Table Aliases
var t0 = new exm.Orders().AsQueryable();
var t1 = new exm.OrderDetails().AsQueryable();
// Query
var query = Odb.SQL.Select(x => x.From(t0).Top(10) );
var dt = query.ExecuteReader(exm.cn).ToDataTable();