Review Glossary FR

Size

Eyes

Finish a part in any dojo to unlock the next eyes.

Day 5 10 min

Counting with GROUP BY

1 / 11 · ≈ 10 min left

Warm-up

From yesterday. Answer from memory: a wrong guess still helps you remember.

A topic has 3 posts and 2 tags. SELECT count(p.id) FROM topics t LEFT JOIN posts p ON ... LEFT JOIN tags g ON ... WHERE t.id = 1 returns what?