Mysql 查询 rand() 和 order by

Question

您好，我正在尝试获取一些按位置 ASC 排序的随机结果。

这是我的查询：

SELECT `location`, `route`
FROM (`foo`)
WHERE `location` != ''
ORDER BY  RAND(), `location` ASC
LIMIT 8 

问题是它随机获取但不按“位置”ASC 排序，如果我这样做：

SELECT `location`, `route`
FROM (`foo`)
WHERE `location` != ''
ORDER BY  `location` ASC,RAND()
LIMIT 8 

它不是随机的。

我怎样才能同时获得RAND() 和ORDER BY location ASC？

Answer 1

您需要嵌套语句/查询：

SELECT *
FROM (
    SELECT `location`, `route`
    FROM `foo`
    WHERE `location` != ''
    ORDER BY RAND()
    LIMIT 8) AS `temp`
ORDER BY `location` ASC;