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  • Scott Lumsden thinks this is interesting:

Here’s an extension of the previous query that includes a second condition stating that only those employees with a start date later than January 1, 2006 should be included:


Cover of Learning SQL, 2nd Edition


Possible errata: Downloaded the demo dataset (http://examples.oreilly.com/9780596520847/) on March 28 2016, and it doesn't contain any employees with start dates later than 2006.