Grid / connector sort case sensitive

Hi,
I would like use a case sensitive sort when the user click on a header of a column.
I haven’t the pro version and i think that i have to use the custum_sort function to do that ???

How i can get the file name and modifiy the sql ?

Thanks.

Custom sorting works for client side sorting functionality.
In case of server side sorting, the entered text translated in something like

SELECT * FROM table ORDER BY some ASC

There is no any enforcing on case-sensitivity sorting, it is fully depends on database configuration.