Ending a session or query for RDS for MySQL - Amazon Relational Database Service
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Ending a session or query for RDS for MySQL

You can end user sessions or queries on DB instances by using the rds_kill and rds_kill_query commands. First connect to your MySQL DB instance, then issue the appropriate command as shown following. For more information, see Connecting to your MySQL DB instance. 

CALL mysql.rds_kill(thread-ID)
CALL mysql.rds_kill_query(thread-ID)

For example, to end the session that is running on thread 99, you would type the following: 

CALL mysql.rds_kill(99);

To end the query that is running on thread 99, you would type the following: 

CALL mysql.rds_kill_query(99);