mysql - 获取值，在列中重复更多次

Question

给定表menu，在他中是列 continent，例如在他中是这个数据

continent
----------
africa
africa
europe
europe
europe

我想获得大陆名称，在列中出现更多次，即结果必须是europe.

我写查询，但我认为我的查询很困难，对于这种情况必须存在更简单的解决方案。有一些想法吗？

这是我的查询

    SELECT continent FROM (
        SELECT continent, COUNT(continent) AS cnt FROM menu GROUP BY continent
    ) AS t
    WHERE cnt = (
        SELECT MAX(cnt) FROM ( 
            SELECT  COUNT(continent) AS cnt FROM menu GROUP BY continent
        ) AS t2
    )

Answer 1

试试这个：

SELECT continent FROM (
    SELECT continent, COUNT(continent) AS cnt
    FROM menu
    GROUP BY continent
) AS t
ORDER BY cnt DESC
LIMIT 0, 1

我认为您也可以在单个查询中执行此操作：

SELECT continent, COUNT(continent) AS cnt
FROM menu
GROUP BY continent
ORDER BY cnt DESC
LIMIT 0, 1

问候

---

更新：

SELECT continent
FROM menu
GROUP BY continent
HAVING count(continent) = 
(
    SELECT COUNT(continent) AS cnt
    FROM menu
    GROUP BY continent
    ORDER BY cnt DESC
    LIMIT 0, 1
)

内部查询返回最多的重复项；然后在应用于 HAVING 运算符的外部查询中使用该值，以仅返回精确重复该次数的项目。这适用于 mysql，我不确定其他 SQL 方言。