това ми е заявката:

SELECT CO.ContinentName, CAST(SUM(C.AreaInSqKm) AS BIGINT) AS [CountriesArea],
CAST(SUM(C.Population) AS BIGINT) AS [CountriesPopulation]
FROM Continents AS CO
LEFT JOIN Countries AS C ON CO.ContinentCode = C.ContinentCode
GROUP BY CO.ContinentName
ORDER BY CAST(SUM(C.Population) AS BIGINT) DESC

Дава ми тази грешка:

Msg 8115, Level 16, State 2, Line 1
Arithmetic overflow error converting expression to data type int.

къде греша