Report dataset - DataItemTableView sorting

samantha73

Hi Guys
I'm trying to understand DataItemTableView in report dataset in AL. What's the point of sorting here and is it better to sort or not sort and performance implications? below is an example:

dataitem("Purchase Header"; "Purchase Header")
{
PrintOnlyIfDetail = true; //remove header without detail
RequestFilterFields = "No.", "Location Filter", "Posting Date";
DataItemTableView = sorting("No.");
column(No_; "No.")
{

}