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A Visual Explanation of SQL Joins. It turns out Venn diagrams are an excellent way of illustrating joins.
Tagged jeffatwood, sql, venndiagrams
It's no coincidence - relational theory is an offshoot of set theory.
Simon Brunning - 12th October 2007 11:14 - #
I'd be interested to hear an explanation of how the analogy breaks down (as hinted at in some of the comments).
Jason Davies - 12th October 2007 15:01 - #
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It's no coincidence - relational theory is an offshoot of set theory.
Simon Brunning - 12th October 2007 11:14 - #
I'd be interested to hear an explanation of how the analogy breaks down (as hinted at in some of the comments).