如何订购此UNION MySQL查询？

Question

我有以下查询，并希望按CREATED列排序结果，我该怎么做呢？

(SELECT media.id, media.accessKey, media.internalName, media.type, media.modified, users.username, users.id, media.created,
0 AS reposted
FROM media
LEFT JOIN users ON users.id = media.userId)
UNION
(SELECT media.id, media.accessKey, media.internalName, media.type, media.modified, users.username, reposts.userId, reposts.created,
1 AS reposted
FROM reposts
LEFT JOIN media ON media.id = reposts.mediaId
LEFT JOIN users ON users.id = reposts.userId)

Answer 1

加：

order by created

在查询结束时。

Answer 2

您只需要将order by子句添加到查询中（使用(在查询周围不是必需的）：

SELECT media.id,
       media.accessKey,
       media.internalName,
       media.type,
       media.modified,
       users.username,
       users.id,
       media.created,
       0 AS reposted
FROM media
LEFT JOIN users ON users.id = media.userId
UNION
SELECT media.id,
       media.accessKey,
       media.internalName,
       media.type,
       media.modified,
       users.username,
       reposts.userId,
       reposts.created,
       1 AS reposted
FROM reposts
LEFT JOIN media ON media.id = reposts.mediaId
LEFT JOIN users ON users.id = reposts.userId
ORDER BY CREATED ASC

您可以检查此sqlfiddle以查看它是否正常工作。