I checked that when i try to query on events data the total record decreased automatically. I want to know that when data is deleted from applicationinsights. My query is just simple count query. I also noticed that some events timestamp also updated. I searched for blog etc but nothing found
customEvents | count
Unless you explicitly set a time range in the query directly, like
then the analytics website is going to automatically apply a last 24 hours time restriction automatically. (look in the upper right corner, there is a dropdown that will either say "set in query" or "last 24 hours" or other choices)