While I find SQL useful too, there are other things I value even more than my SQL skills. Being able to use a POSIX Shell with tools like curl is certainly one

While I find SQL useful too, there are other things I value even more than my SQL skills. Being able to use a POSIX Shell with tools like curl is certainly one of them as it enables me to connect different technologies on a very practical level. Furthermore, understanding the basic functional programming principles is invaluable if you want to build clean algorithms (doesn't matter if you use Excel, C or Lisp).