Опитайте това:
SELECT DISTINCT name, location FROM object
WHERE substring(location, 1, 1)
NOT IN ('1','2','3','4','5','6','7','8','9');
или трябва да добавите NOT LIKE
преди всяко число:
SELECT DISTINCT name, location FROM object
WHERE location NOT LIKE '1%'
OR location NOT LIKE '2%'
...