By Seyed M.M. (Saied) Tahaghoghi, Hugh Williams
Even if you are working a enterprise, maintaining a tally of contributors andmeetings for a membership, or simply attempting to manage a wide and diversecollection of data, you will find the MySQL database engineuseful for answering questions reminiscent of: that are my most sensible ten fastest-selling items? How often does this individual come to our facility? What used to be the top, lowest, and regular rating of the crew final season?
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Extra info for Learning MySQL: Get a Handle on Your Data
Most of the command-line utilities we describe in this book have a help option that you can use to discover the command syntax, including any short forms. 0 Copyright (C) 2002 MySQL AB This software comes with ABSOLUTELY NO WARRANTY. , --help Display this help and exit. -p, --password[=name] Password to use when connecting to server. If password is not given it's asked from the tty. -u, --user=name User for login if not current user. We’ve shown only part of the output here. You can see that you can use the short form -?
You’ll see lots of interesting messages flash by; we haven’t shown them all here. If all goes well, you should see the reassuring Complete status message at the end. If the latest version of a package is already installed, yum will tell you that it Could not find update match for that package. org). You can also download Red Hat or Fedora RPMs and install and upgrade them manually just as you would the MySQL AB ones. net and search for mysql; pick and download the RPM for Red Hat or Fedora with the highest version number.
3 and press the Enter key. Performing restricted operations Certain restricted operations on a Linux or Mac OS X system are allowed only if you have superuser, or root, privileges. info user by typing the su - (switch user) command. When prompted, type in the system root user’s password and press the Enter key: [adam@eden ~]$ su Password: the_system_root_password [root@eden ~]# This is almost identical to the case for Mac OS X: eden:~ adam$ su Password: the_system_root_password eden:~ root# After you type in the password, you’ll be logged in as the user root on the same computer (in this example, eden) and be working from that user’s home directory (also indicated by a tilde).