Why I consider USING harmful This is an off-site link.  Please review our Terms of Service for additional information.

(Marko Tiikkaja) Often on the topic of the different JOIN syntaxes in SQL I mention that I consider ON the only reasonable way to specify JOIN clauses in production code, and I get asked for details. It always takes me a while to recall the specific problem and to come up with a plausible scenario, so I figured it would be easier to document this once and for all.

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