Question

如何按日名称在mysql中订购，即：周日，周一，周二，周三等等

SELECT 
    DAYNAME(dl.bookingDate) AS dayName, COUNT(dg.idDiary) AS totalBooked
FROM
    diary_list dl, diary_group dg
WHERE
    dl.idDiary = dg.idDiary AND dg.idService != 0 AND dl.status = 3
GROUP BY 
    dayName
ORDER BY 
    dayName ???

Answer 1

您需要将功能DAYOFWEEK添加到GROUP BY和ORDER BY：

GROUP BY DAYOFWEEK(dl.bookingDate)
ORDER BY DAYOFWEEK(dl.bookingDate)

您可能还希望使用显式ANSI标准JOIN语法。

SELECT 
    DAYNAME(dl.bookingDate) AS dayName, COUNT(dg.idDiary) AS totalBooked
FROM
    diary_list dl
JOIN diary_group dg
    ON dl.idDiary = dg.idDiary
WHERE
    dg.idService != 0 AND dl.status = 3
GROUP BY 
    DAYOFWEEK(dl.bookingDate)
ORDER BY 
    DAYOFWEEK(dl.bookingDate)

Answer 2

您可以制定自己的订单标准：

ORDER BY FIELD(DAY , '3', '4', '5', '6', '7','1', '2')

在你的情况下：

ORDER BY FIELD(DAY , '7','1', '2', '3', '4', '5', '6')

阅读此article了解更多信息

mysql按日期顺序排序

2 个答案: