Big Data Lab notes 02/19/14
Today, we will work on SQL queries.
Before the class, please download mySQL from from http://dev.mysql.com/downloads There are many different versions, select MySQL Community Server.
mySQL has an extensive documentation, including installation instructions for different OSes, for example, MacOS: https://dev.mysql.com/doc/refman/5.7/en/macosx-installation.html and for Windows: http://www.mysql.com/why-mysql/windows/
I run mySQL on MacOS, so here's what I did after I installed the system to 'start' the database:
shell> cd /usr/local/mysql shell> sudo ./bin/mysqld_safe (ENTER YOUR PASSWORD, IF NECESSARY) (PRESS CONTROL-Z) shell> bg (PRESS CONTROL-D OR ENTER "EXIT" TO EXIT THE SHELL)
You can also use the shortcut command: mysqlup
To connect to the MySQL server, on a terminal, invoke `/usr/local/mysql/bin/mysql.
You can add aliases to your shell's resource file to make it easier to access commonly used programs such as `mysql' and `mysqladmin' from the command line. I have added the following 2 lines to my .bashrc:
alias mysql=/usr/local/mysql/bin/mysql alias mysqladmin=/usr/local/mysql/bin/mysqladmin
You can also modified my PATH environment variable to include /usr/local/mysql/bin: