Nice kata! A simple formula at its core, but a great opportunity to think recursively and iterate mentally. Clean, well-structured challenge. Thanks for creating this!

Your calculation of price_per_kg is wrong. Look at the table that your query generates. When I run your query, it tells me that for something that costs 2.44 and weighs 30 grams, the price_per_kg is 0.07. That doesn't make any sense, does it? If it costs 2.44 for less than 1kg, how would a kg cost 0.07? If you fix your calculation, I think you'll find that the kata is not bad and is not a waste of time.

I can't for the life of me figure how how my solution is different from the "correct" one. Even after fighting Postgres... this Kata is bad. Don't waste your time.

Hated it.

This is one of those exercises that’s more about fighting PostgreSQL's quirks than about actually understanding SQL concepts.

Resolved for Python (also updated test framework).

Python, probably others:

• Random tests do not generate non-integer values of r.

You didn't actually resolve this btw.

Approved

hm... didn't think that such a simple pattern would work. but okay i guess.

Yes bro really confusing I didn't undestand producent

Same

guys just to mention : he is the kata sensei.

Duplicated suggestion, closing.

No answer after 9 months, closing.