If you are wanting to connect to a remote database using the command line with MySQL, you first need to download the MYSQL client available here
Open a DOS shell and run the following:
mysqlsh /sql -u aurora -p mypassword -h auroratest-1.cluster-xxxx.ap-southeast-2.rds.amazonaws.com AURORATEST
Then run your query
mysql-sql> select count(*) from AURORA.PERSON_AWS; +----------+ | count(*) | +----------+ | 27975 | +----------+ 1 row in set (0.03 sec)