mysql - 有没有办法简化这个查询？

Question

这是我编写的查询，它有两次相同的几行。我怎样才能避免这种情况？

SELECT
    artistID, bio
FROM
    UserReactionToArtistView
WHERE
    genre = 'classical' AND type = 'like' AND bio LIKE '%Rerum%'
GROUP BY
    artistID
HAVING
    COUNT(*) = ( SELECT MAX(num) as max
                 FROM 
                   (
                     SELECT
                         artistID, bio, count(*) as num
                     FROM
                         UserReactionToArtistView
                     WHERE
                         genre = 'classical' and type = 'like' AND bio LIKE '%Rerum%'
                     GROUP BY
                         artistID ) as Artists
                    )

很抱歉，如果此格式错误或不是提问的地方。

Answer 1

由于您想通过 num 列上具有 最大值 的行来过滤最内部的查询，我认为您可以执行以下操作:

SELECT
    Artists.artistID,
    Artists.bioo
FROM 
    (
        SELECT
            artistID,
            -- Next line can be replaced by ANY_VALUE(bio) on newer versions of MySQL.
            MAX(bio) AS bioo,
            count(*) AS num
        FROM
            UserReactionToArtistView
        WHERE
            genre = 'classical'
        AND
            type = 'like'
        AND
            bio LIKE '%Rerum%'
        GROUP BY
            artistID ) AS Artists
WHERE
    Artists.num = (SELECT MAX(num) FROM Artists);