Hello, intrepid hackers! This code lab is designed to help you learn some of the ins and outs of extending various parts of CockroachDB's SQL layer. It's made for new and old employees alike. It will require a few several (UPDATE 2021: probably many! SQL has gotten more complex since this was written, and as such, this lab will take more time than originally expected) hours of your time to complete, start to finish.
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