Very nice. Adding this one to my list of "things other people wrote that nicely elucidate a shortcoming of SQL" > Why would this be useful? Because SQL tables

Very nice. Adding this one to my list of "things other people wrote that nicely elucidate a shortcoming of SQL" > Why would this be useful? Because SQL tables are global variables. By vanishing global variables, we automatically make every query fully testable. And even if you don't care about testability, certainly you can appreciate that global variables are bad for composability.