MYSQL选择值最高的所有地方

Question

在MYSQL查询中，如何选择值最高的所有行，例如：

SELECT      UNIX_TIMESTAMP(creation_date) AS `date`,
            release_version
FROM        content
WHERE       id = '1' 
ORDER BY    `date` DESC

这将输出例如：

注意：具有相同/不同release_version的行数是可变的，因此我无法使用LIMIT。

我只想选择release_version最高的那些（本例中为3）

我该怎么做？感谢。

Answer 1

这可以简单地作为

SELECT * 
FROM   content
WHERE  release_version = (SELECT MAX(release_version) FROM content)

Answer 2

使用HAVING clausule。

SELECT      UNIX_TIMESTAMP(creation_date) AS `date`,
        MAX(`release_version`) as max,
FROM        content
WHERE       id = '1' 
HAVING max > 3
ORDER BY    `date` DESC

修改

或者你可以使用

SELECT      UNIX_TIMESTAMP(creation_date) AS `date`,
       `release_version` as max,
FROM        content
WHERE       id = '1' AND release_version = (SELECT MAX(`release_version`) FROM content WHERE id = '1')
ORDER BY    `date` DESC