I agree with this

All the details for sql are in the comment in the initial solution.

Is it only me but how can I write sql query when there isn't any description..

I feel like if the instructions explained how to insert the month an year totals, that would bring it down to a true 6.

Cool kata but had to google about median

Do you maybe know why with using to_char(date, 'YYYY')::int etc which result in good output, the whole result didn;t work, I had to use extract

Ranks can't be changed easily anymore.