Install RH9, select the mysql package. Log in to the shell, run mysql (lowercase) to enter the MySQL environment.
Just come in, I don't understand anything, you can use / h to display help information.
There is a command very good show. Come use:
Show database; (to use; indicate the end of the command, otherwise waiting for you to enter)
You can now see all databases in the system
Take a query:
Use DatabaseName; The default is called TEST, and a named mysql.
After the USE command, set the database to the current database. Ok, you can use the following command:
Show tables Displays all table names.
The situation inside is very clear now. You can do the first query:
SELECT * FROM table name. . . .
Now, complete the first query is not! ! ! Haha.