The problem context involves a database that contains information about different cities, including their populations. The task is to determine the average population across all cities, but the result should be a whole number. Therefore, any fractional part of the average population needs to be discarded.
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The solution approach uses the SQL 'SELECT' statement to query the database. The 'AVG' function calculates the average population across all cities. The 'FLOOR' function is then applied to this average to round it down to the nearest whole number. This is because the 'FLOOR' function returns the largest integer less than or equal to a number. So, if the average population is a decimal, the 'FLOOR' function will effectively discard the fractional part.
SELECT FLOOR(AVG(POPULATION))
FROM CITY
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