Jeff Atwood already did it much better than I can: http://www.codinghorror.com/blog/2007/10/a-visual-explanation-of-sql-joins.html http://www.codinghorror.com/

Jeff Atwood already did it much better than I can: http://www.codinghorror.com/blog/2007/10/a-visual-explanation-of-sql-joins.html http://www.codinghorror.com/blog/2007/10/a-visual-explanatio... Hope that helps!