Seems to me that what is covered in SQL in this course is rather easy; especially if you did any of the JS or jQuery or Angular courses. Why not just give instructions and reveal the code on prompts?
For example, take any exercise and instead of saying "type this" just give us the description of what to do and if we can't figure it out we can press a button that reveals the code.
Most of the time I have to avert my eyes from the answer as it interferes with learning. The material is easy enough to figure out in most of the lessons.