php - Mysql查询: switch if record come from table news or news_collect

Question

我有这个查询:

(SELECT * FROM news WHERE Del='0' ORDER BY `Date` DESC)
    UNION
(SELECT * FROM news_collect WHERE Del='0' ORDER BY `Date` DESC)

现在在 while 循环中，我需要切换记录是否来自表 news 或 news_collect...怎么做？？

Answer 1

我将通过添加自定义字段来解决此问题，并保持列数相同。

(SELECT *, 'news' as source FROM news WHERE Del='0' ORDER BY `Date` DESC)
    UNION
(SELECT *, 'news_collect' as source FROM news_collect WHERE Del='0' ORDER BY `Date` DESC)

然后您可以使用switch($aRow['source'])。