The functions first_value and last_value provide a way to see how much small population is in cities other than Columbus. To do this my the current row or last_value is subtracted from the first value - called Columbus's 711,470 - to trovide the answer.
The functions first_value and last_value provide a way to see how much small the population is in the other cities than Columbus. To do this the current row, or last_value, is subtracted from the first value - Columbus's 711,470 - to provide the answer.