// Table Aliases
        var t0 = new Orders().AsQueryable();
        var t1 = new OrderDetails().AsQueryable();
		
		var sql1 = Odb.SQL.Select(x =>
						x.From(t0)
							.GroupBy(t0.EmployeeID)
							.Fields(x["T1"].AS("Type"), 
									x[t0.EmployeeID].AS("Id"), 
									x[t0.OrderID].MAX().AS("OrderID"))
					);
		var sql2 = Odb.SQL.Select(x =>
						x.From(t1)
						.GroupBy(t1.ProductID)
						.Fields(x["T2"].AS("Type"), 
								x[t1.ProductID].AS("Id"), 
								x[t1.OrderID].MAX().AS("OrderID"))
					);
		
		// Query
        var query = Odb.SQL.{{hl}}Union{{/hl}}(x =>
						{{hl}}x.RemoveDuplicates(){{/hl}}
						{{hl}} .Add(sql1){{/hl}}
						{{hl}} .Add(sql2){{/hl}}
							.Top(5)
							.OrderASC(sql1[0]).OrderASC(sql1[1]).OrderDESC(sql1["OrderID"])
					);