Simple sql code task

Question

im a real beginner, i know only the most basic commands. I got some tables
https://docs.google.com/document/d/1yUhXiUPQM9s-ZoYgEtf-8eZ1zh495Q7ywWxBTa-9OTk/pub
I need to write a code counting how many flights originated from the US, how do i write it in simple code?
Tyia

Answer 1

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I think you need SQL query code. I would ask here:
https://social.msdn.microsoft.com/Forums/en-us/home?forum=transactsql