How to stop MySQL after entering $ ps -ef

so uninstalled mysql (5.7.16) homebrew on mac, when entered

$ ps -ef | grep mysql

to check if there's process running, got this

"501  1069  1024   0 10:06am ttys000    0:00.00 grep mysql"

does mean mysql still running computer? how can uninstall mysql completely?

thanks much!!!

the piped grep command filters lines include given keyword: mysql.

the ps command reports piped grep command running process.

the output receive finally, means running process having keyword mysql piped grep command mysql parameter.

Swift