✅ Two weeks, done. You learned to read a query, filter, aggregate, group, handle NULLs and joins in the boot camp — then de-cursed five of the Predecessor's queries on the job, where every one of them quietly lied. You left every query better (and more honest) than you found it. That's the whole job.

Every one of those queries lied in a different way. SQL for Analysts is 239 pages on the ones that come up at work, including the two ways a join silently breaks and how to find where a total went, with every query worked through line by line. SQL for Analysts, $19 →