I think SQL is both the simplest to learn and most worthwhile in this aspect. Why? Short answer - Because it doesn't have for loops. It forces you to think ab

I think SQL is both the simplest to learn and most worthwhile in this aspect. Why? Short answer - Because it doesn't have for loops. It forces you to think about data in another way. It is like origami for programming. You can't brute force it, you have to fold your way to the result.