mysql - 同一个语句中的分组依据和排序依据(每月)

Question

是否可以在同一个语句中进行分组依据和排序依据？下面的语句以随机顺序输出月份。它产生正确的数字等，但是我想按顺序显示月份，如一月、二月、三月、四月等

SELECT coalesce(date_format(TRANSACTION_DATE, '%M'), 'Grand Total') AS MONTH,
ROUND(SUM(SALES_AMOUNT),2) TOTAL, SUM(QUANTITY) AS TOTAL_QUANTITY
FROM SALES
WHERE YEAR(TRANSACTION_DATE) = 2018
GROUP BY month WITH ROLLUP;

April       30826.68    476
August      39703.85    619
December    36986.16    515
February    34531.15    463
January     45163.22    596
July        37640.08    506
June        37284.25    496
March       44194.98    621
May         39016.04    576
November    39161.90    521
October     34447.61    485
September   34958.94    498
            453914.86   6372

Answer 1

Is is possible to group by and order by in the same statement? Yes, that is possible just you need to work around it.

如果您可以从此查询中删除汇总，则可以进行如下排序:

SELECT coalesce(date_format(TRANSACTION_DATE, '%M'), 'Grand Total') AS MONTH, ROUND(SUM(SALES_AMOUNT),2) TOTAL, SUM(QUANTITY) AS TOTAL_QUANTITY FROM SALES WHERE YEAR(TRANSACTION_DATE) = 2018 GROUP BY month order by month(TRANSACTION_DATE) asc;