My six-year-old (seven in a month), the one that enumerates from zero, has started her "I want a phone" - campaign:
I want a phone. Many of my friends already have phones.
Note: Not "all", she is more precise than that. "Many".
(wife): Does X have a phone?
Does Y have a phone?
Mom, it's better if I list the ones that have a phone.
Basically, she spurns the
SELECT * FROM Friends approach because it is inefficient and not helping her cause.