在SQL列中查找最常见的值

Question

如何在SQL表的给定列中找到最常用的值？

例如,对于此表,它应该返回,two因为它是最常见的值:

one
two
two
three

Answer 1

SELECT       `column`,
             COUNT(`column`) AS `value_occurrence` 
    FROM     `my_table`
    GROUP BY `column`
    ORDER BY `value_occurrence` DESC
    LIMIT    1;

替换column和my_table.1如果要查看列的N最常见值,请增加.

Answer 2

尝试类似的东西:

SELECT       `column`
    FROM     `your_table`
    GROUP BY `column`
    ORDER BY COUNT(*) DESC
    LIMIT    1;

Answer 3

让我们将表名tblperson和列名视为city.我想从城市列中检索最重复的城市:

 select city,count(*) as nor from tblperson
        group by city
          having count(*) =(select max(nor) from 
            (select city,count(*) as nor from tblperson group by city) tblperson)

这nor是别名.

Answer 4

以下查询在SQL Server数据库中似乎对我有用:

select column, COUNT(column) AS MOST_FREQUENT
from TABLE_NAME
GROUP BY column
ORDER BY COUNT(column) DESC

结果:

column          MOST_FREQUENT
item1           highest count
item2           second highest 
item3           third higest
..
..