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SELECT CN.CONTINENT ,FLOOR(AVG(C.POPULATION)) FROM CITY C INNER JOIN COUNTRY CN ON C.COUNTRYCODE =CN.CODE GROUP BY CN.CONTINENT;
this worked instead of round and ceil usage fro round of nearest integer
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Average Population of Each Continent
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SELECT CN.CONTINENT ,FLOOR(AVG(C.POPULATION)) FROM CITY C INNER JOIN COUNTRY CN ON C.COUNTRYCODE =CN.CODE GROUP BY CN.CONTINENT; this worked instead of round and ceil usage fro round of nearest integer