File: sep6.txt
Author: Jeff Kinne
Contents: plan/notes for the day

Next time - #5.

HW3 answers

HW4 - inserting/creating, installing MySQL, security, blog/etc. search
    - look through book for something later on you think is cool...

Questions for next time

* why WITH and not just in FROM?
  - answer: could do either way, WITH is there as a convenience to make
    the queries easier to understand

* difference between INNER and NATURAL JOIN?

  - NATURAL is a type of INNER or OUTER join, which 
    basically has an implicit predicate (all columns with same names)

  - INNER only gives rows with a match, OUTER puts in nulls when 
    there is not a match.

BNF for SQL - http://savage.net.au/SQL/

Example - getting some data into SQL with php or python 

...