Why doesn't Sololearn have SQL challenges and quizzes?

Question

SQL is a Sololearn course, but Sololearn doesn't have SQL quizzes and challenges. Sololearn also does not have SQL on code playground. Does anybody know why?

Answer 1

Same goes for CSS, Swift. Quiz submission for those languages are not opened yet. :>

Answer 2

They will be available soon...
You could request them at [e-mail]

Answer 3

It takes time.
HTML and others didn't have quizzes landing all of the sudden either.
Time is your answer.

Answer 4

Well you cannot code SQL on Sololear, so having challenges would not make sense.