mysql is a program for connecting to a MySQL server. For the purposes of this tutorial, I'll assume you are connecting to a MySQL server that's running on the same machine as the 'mysql' program you will be running (i.e. "localhost").
SQL statements can be used outside the MySQL command-line program. If just need want the relevant SQL statement(s), you can disregard steps 1 and 2 and skip to step 3.
1. Connect to
mysql -u [username] -p
- -u -- This flag must preceed the username. Without this flag,
mysqlwill assume that the MySQL username makes the OS username of the logged in user running the program.
- [username] -- MySQL username.*
-p -- Prompts user to provide password. Without this flag,
mysqlwill search for a setting file that contains relevant password.
You may have a MySQL username that's identical to your Linux/OS username and they may even share the same password. But it's imporant to understand that these are different user accounts--much like using the same username and password on multiple web sites. For example, Linux has a default user called "root" and MySQL also has a default user called "root."
mysql -u root -p
2. When prompted, enter your password
Remember: You are entering the username for the MySQL username you specified.
3. Enter "USE" statement
MySQL doesn't have a straight-forward command (e.g. "SHOW USERS") for listing users on a MySQL server.
Instead, we'll need to access the database MySQL uses for storing users.
You should see a message that says something like "Database changed."
4. Enter "SELECT" statement
SELECT user FROM user;
The statement above is selecting a column called "user" from a table called "user".
You should see something on your screen that looks like this...
+-----------+ | user | +-----------+ | mysql.sys | | mysqlxsys | | root | +-----------+ 3 rows in set (0.00 sec)