Commit 5e90844b by yangpengflag

mysql作业

parents
-- 如果一个国家的面积超过300万平方公里,或者人口超过2500万,那么这个国家就是大国家。
--
-- 编写一个SQL查询,输出表中所有大国家的名称、人口和面积。
select name,population,area from World where area>3000000 or population>25000000;
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