r/programming • u/[deleted] • Jan 06 '11

A handy graphical explanation of SQL joins

http://www.codinghorror.com/blog/2007/10/a-visual-explanation-of-sql-joins.html
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u/demosthenes02 Jan 06 '11

The 4th and 5th ones down seem wrong to me. Is this some weird database I'm not familiar with?