List the East Asia & Pacific countries which are under the High income: nonOECD group. Please include their alpha code.
the East Asia & Pacific countries are where Region = 'East Asia & Pacific'; High income: nonOECD group is where IncomeGroup = 'High income: nonOECD'
SELECT CountryCode, Alpha2Code FROM Country WHERE Region = 'East Asia & Pacific' AND IncomeGroup = 'High income: nonOECD'