按日期排序来自不同MySQL表的内容

Question

我有3个不同的表：

• 新闻

  • news_id
  • news_content
  • news_pubdate

• 歌曲

  • song_id
  • song_link
  • song_pubdate

• 访问

  • interview_id
  • interview_artist
  • interview_content
  • interview_pubdate

我正在尝试在我的网站上创建一个时间轴，以显示由我的3个表格中的pubdate排序的所有内容。 有没有办法在MySQL中做到这一点？

也许创建一个“通用”表，其中包括从我的3个其他表中按日期排序的所有ID？ 然后我应该用PHP链接所有元素。 功耗不是太大了吗？

Answer 1

试试这个，看看它是否符合你的需求：

SELECT
    `news_id`      AS `id`,
    `news_content` AS `content`,
    `news_pubdate` AS `pubdate`,
    ""             AS `person`,
    "news"         AS `type`
FROM `news`

UNION
SELECT
    `song_id`      AS `id`,
    `song_link`    AS `content`,
    `song_pubdate` AS `pubdate`,
    ""             AS `person`,
    "song"         AS `type`
FROM `song`

UNION
SELECT
    `interview_id`      AS `id`,
    `interview_content` AS `content`,
    `interview_pubdate` AS `pubdate`,
    `interview_artist`  AS `person`,
    "interview"         AS `type`
FROM `interview`

ORDER BY `pubdate`;