# Time: O(n) # Space: O(1) # There is a table World # +-----------------+------------+------------+--------------+---------------+ # | name | continent | area | population | gdp | # +-----------------+------------+------------+--------------+---------------+ # | Afghanistan | Asia | 652230 | 25500100 | 20343000 | # | Albania | Europe | 28748 | 2831741 | 12960000 | # | Algeria | Africa | 2381741 | 37100000 | 188681000 | # | Andorra | Europe | 468 | 78115 | 3712000 | # | Angola | Africa | 1246700 | 20609294 | 100990000 | # +-----------------+------------+------------+--------------+---------------+ # # A country is big if it has an area of bigger than 3 million square km or a population of more than 25 million. # Write a SQL solution to output big countries' name, population and area. # For example, according to the above table, we should output: # +--------------+-------------+--------------+ # | name | population | area | # +--------------+-------------+--------------+ # | Afghanistan | 25500100 | 652230 | # | Algeria | 37100000 | 2381741 | # +--------------+-------------+--------------+ SELECT name, population, area FROM World WHERE area > 3000000 OR population > 25000000;