mediumcodewarssql
OnTheCanadianBorder
CodeWars - On the Canadian Border (SQL for Beginners #2)
From the travelers table (name, country), return travelers who need
a visa check — i.e. exclude citizens of USA, Canada, and Mexico.
Çözüm (sql)
solution.sql
SELECT name, country
FROM travelers
WHERE country NOT IN ('USA', 'Canada', 'Mexico');