Updated Database management (markdown)

Database-management.md

@@ -50,6 +50,12 @@ Maybe you have multiple servers in your network so `/plan db clear` is not good
 
 A bot attack usually messes up the peak calculations. Removing that data needs manual SQL query to the database.
 
+Removing bot users who did not join game servers:
+```sql
+DELETE FROM plan_users WHERE uuid NOT IN (SELECT DISTINCT uuid FROM plan_sessions);
+```
+
+Removing bad tps data:
 ```sql
 DELETE FROM plan_tps WHERE date>{start} AND date<{end} AND players_online>{above value};
 ```
@@ -58,6 +64,8 @@ Replace the variables in `{square brackets}` (remove the brackets as well)
 - `end` is [epoch millisecond](https://currentmillis.com/) of the end time of the attack
 - `above value` should be above 0, use it to further limit what data is removed.
 
+
+
 ## Removing ALL data
 
 To remove all data run `/plan db clear`.