What is the meaning of -u in mysql?

In MySQL, the `-u` parameter is used to specify the username (user) to connect to the database. This parameter tells the MySQL client which user to log in to the database server as.

Specifically, the `-u` parameter must be followed immediately by the username to be connected to. For example, if you want to connect to a MySQL database using the username “myuser”, you can execute the following command:

mysql -u myuser -p

The command above uses `-u myuser` to specify the username “myuser” to connect to the database.

Please note that when using the “-u” parameter, if a password is not provided (using the “-p” parameter), the MySQL client will prompt for the password. If a password is provided, you can directly use the “-p” parameter in the command, as shown in the example above.