What are the distinct billing countries of the invoices?
SELECT distinct(BillingCountry) FROM INVOICE
SELECT distinct(BillingCountry) FROM INVOICE
[{'BillingCountry': 'Germany'}, {'BillingCountry': 'Norway'}, {'BillingCountry': 'Belgium'}, {'BillingCountry': 'Canada'}, {'BillingCountry': 'USA'}, {'BillingCountry': 'France'}, {'BillingCountry': 'Ireland'}, {'BillingCountry': 'United Kingdom'}, {'BillingCountry': 'Australia'}, {'BillingCountry': 'Chile'}, {'BillingCountry': 'India'}, {'BillingCountry': 'Brazil'}, {'BillingCountry': 'Portugal'}, {'BillingCountry': 'Netherlands'}, {'BillingCountry': 'Spain'}, {'BillingCountry': 'Sweden'}, {'BillingCountry': 'Czech Republic'}, {'BillingCountry': 'Finland'}, {'BillingCountry': 'Denmark'}, {'BillingCountry': 'Italy'}, {'BillingCountry': 'Poland'}, {'BillingCountry': 'Austria'}, {'BillingCountry': 'Hungary'}, {'BillingCountry': 'Argentina'}]