Report on top search terms

(from github.com/EyadA)
How do I query the fess_log.search_log index to retrieve the top 10 searched terms? I tried using the REST function within the Dashboard but not sure what parameters to send to get an aggregate result of the search term. Any ideas?

(from github.com/marevol)
In Fess 12.4, you can check it at Admin Search Log page.