mysql updated to avoid warnings on new nodejs

[VeronikaLee]

No description provided.

[ghost]

I think we should include a new page or comment about what mariaDB. Can imagine it confusing users as to why the course is MySQL and we use MariaDB?

Update text to show new terminal output for the shell

• 2. My SQL
• 3. Listing databases
• 3. 1. Displaying databases
• 3. 2. MySQL hints
• 3. 3. Displaying data
• 4. Selecting columns
• 5. Limiting queries
• 6. Ordering table queries
• 7. Sourcing SQL files
• 8. Query operators
• 10. Getting help

Layout

• 8. 1. Query operators table
        think this should be one page layout (without tree)

Problem

12. 1. SQL examples
       Copying into sql-example.sql file is OK but unable to source it in terminal. error: ERROR: Failed to open file 'sql-example.sql', error: 2

Comment:
where users are to write into sql file and then go to terminal to source the file, the terminal is slow to respond - ie try to type source command and takes time to accept it (also same if copy/paste from the guides into terminal). Have to change focus from terminal to sql file and back for commands to show