Not that I approve, mind you, but SQL (if not the RM) is invading the Data Science space. R has had join semantics for some time, and very slow so if your data is already in a RDBMS do it there, but Hadley has gilded the lily. I guess I should be thankful, sort of. However, the Data Science brigade will immediately shift to doing RDBMS work in R, where it really isn't appropriate. Another case of turning the RDBMS into a file server. I'm irritated already, just in the time it took to type this out.
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