两种方法,一个是or
一个是union
,union
会快一点
# Write your MySQL query statement below
# select name, population, area from World
# where area >= 3000000
# or population >= 25000000
select name, population, area from World
where area >= 3000000
union
select name, population, area from World
where population >= 25000000
标签:国家,595,name,area,World,leetcode,select,population
From: https://www.cnblogs.com/wudanyang/p/17018057.html