Chapter 14 Fear of the Unknown

SQL Antipatterns — by Bill Karwin (84 / 164)

👈 Part 3 Query Antipatterns | TOC | Objective: Distinguish Missing Values 👉

As we know, there are known knowns; there are things we know we know. We also know there are known unknowns; that is to say we know there are some things we do not know. But there are also unknown unknowns — the ones we don’t know we don’t know.

Donald Rumsfeld

In our example bugs database, the Accounts table has columns first_name and last_name. You…



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