Problem Statement
Given a City table, whose fields are described as
+-------------+----------+
| Field | Type |
+-------------+----------+
| ID | int(11) |
| Name | char(35) |
| CountryCode | char(3) |
| District | char(20) |
| Population | int(11) |
+-------------+----------+
you have to print the average population of all cities, rounded down to the nearest integer.
Solution
select ROUND(avg(Population),0) from City;