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_595.sql
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_595.sql
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--595. Big Countries
--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;