Exercise

Union (2)

UNION can also be used to determine all occurrences of a field across multiple tables. Try out this exercise with no starter code.

Instructions

100 XP

Determine all (non-duplicated) country codes in either the cities or the currencies table. The result should be a table with only one field called country_code.
Sort by country_code in alphabetical order.

Take Hint (-30 XP)