Question

经过几个小时后，我找不到答案。

首先是我的表

  id | one | two | three | four | five | galname
-------------------------------------------------
  1  |  2  |  5  |   23  |  4   | 5    |  Bob

如何在行中找到最高值并显示colomun名称。

three - 23

Answer 1

 select  id,  GREATEST(one, two, three, four, five) value,
        case GREATEST(one, two, three, four, five)
         when one then 'one'
         when two then 'two'
         when three then 'three'
         when four then 'four'
         when five then 'five' end column_name
 from your_table

Answer 2

我认为你应该这样做：

SELECT CASE GREATEST(`id`,`one`, `two`, `three`, `four`, `five`)
         WHEN `id` THEN `id`
         WHEN `one` THEN `one`
         WHEN `two` THEN `two`
         WHEN `three` THEN `three`
         WHEN `four` THEN `four`
         WHEN `five` THEN `five`
         ELSE 0
      END AS maxcol,
      GREATEST(`id`,`one`, `two`, `three`, `four`, `five`) as maxvalue 
    FROM tbl

这只是你不想看这里：MySQL greatest value in row? （如果你遇到问题，我会根据你的需要调整你的需求，无论如何都要参考那篇文章）

在行和回显数字和列名称中查找最高值

2 个答案: