This is good as a slightly harder version of Almost Even

select table schema

age_min (minimum of ages)

age_max (maximum of ages)

Because the instructions ask for the aliases being age_min and age_max

why can't we use min_age and max_age for the alias?

The cheater has been handled, RSpec framework has been used to display the assertion messages properly too, closing !

nice

That's because (in Ruby and many other languages) you can use an integer to get to the n-th charactetr in a String just as you can get the n-th element of an Array.
You can think of a String as an ordered list of charscters (technically code points, but thats another story).

why don't we need to turn em into arrays ?

When running the psql postgres CLI, you do use a semicolon to let the CLI know to start processing the statement.

Approved by someone

Approved by someone

python new test framework is required. updated in this fork

Approved

python new test framework is required. updated in this fork

It should have been a 9. If you do the summation, it ends up being 8 short. (=558)

I looked at this kata, thought it looked hard, and immediately went to the discussion to look for hints. The only one I found was yours to 'think a little bit', so I did, and then quickly banged out a 'clever' one-liner. (Turns out there were a couple of cleverer (or at least more efficient) one-liners in the solutions, but that's what happens if you rush). So thanks for the hint!