[simianwords]

i don't know if this is true or whether people believe this. if you ask other people, they would tell you that sql is a very important skill to learn. i call bs though, like you.

sql is a common interview question, like joining and transformation etc. if its so simple maybe they shouldn't be asking this.

[thereisnospork]

I don't see the contradiction. Something can be both very important and not that difficult to learn and not known by a plurality of interviewees. People ask (and fail) fizz-buzz and that's hardly difficult.