Well, it's not so easy to implement such feature right now.
in this case we need to rebuld product table to work with complicated SQL queries.
Right now you can use Custom Report to sort best customers.
By the way, could you give me your Total sum window for Backend ?
Well in this case something wrong with our test backend.
I'll try to contact our testing team from Monday.
Mar 02, 2015
Alex Pryshlivskiyagentwrote
Hello again Yosh!
I don't remember about your comment.
We are testing this feature right now.
We need to find a balance between performance and customer's comfort.
I'm talking about 15-30 000 customers operation in this window.
Mar 03, 2015
Alex Pryshlivskiyagentwrote
We need real example of orders for testing.
Could you give us your DB with customers with totals ?
or
give us your ini-file for testing if it's possible.
More interestiung for us about 10 - 15 000 customers... or less - 7-10 000
Do you have one ?
Mar 03, 2015
Yosh Mwrote
Hi, I can send you my .ini file (send me a private and I reply because I am not sure what email to send it to), but I don't have so many customers, my shops are under 2000 customers.
Mar 04, 2015
Alex Pryshlivskiyagentwrote
Good morning Yosh,
I've created private ticket for you. Please check email.