mysql - 如何获取 MySQL 中最近 10 周的数据？

Question

SELECT WEEK( `date_posted` ) AS week, COUNT( 1 ) AS aantal
FROM `news`
GROUP BY week
ORDER BY week DESC
LIMIT 0 , 10

这不起作用。输出为:

    week  aantal
    52  41
    51  56
    50  49
    49  56
    48  62

但是，我们还没有到第 52 周。出了什么问题？

Answer 1

我认为你需要一个 WHERE 子句:

SELECT WEEK( `date_posted` ) AS week, COUNT( 1 ) AS aantal
FROM `news` 
WHERE `date_posted` >= (curdate() - interval 10 week)
GROUP BY week
ORDER BY week DESC
LIMIT 0 , 10