Mysql 尝试在使用汇总后对查询排序

在mysql中，我需要按年/月顺序排列结果如下：

Month          Mod1    Mod2    Mod3
Jan/2013        5       4       2
Jan/2013        1       5       3
Total           6       9       5
Feb/2013        6       3       2
Feb/2013        2       1       4
Total           8       4       6
Mar/2014        6       3       2
Mar/2014        2       1       4
Total           8       4       6

按年/月分类的订购说明应为：

Month          Mod1    Mod2    Mod3
Mar/2014        6       3       2
Mar/2014        2       1       4
Total           8       4       6
Feb/2013        6       3       2
Feb/2013        2       1       4
Total           8       4       6
Jan/2013        5       4       2
Jan/2013        1       5       3
Total           6       9       5

查询是：

SELECT
   month,
   year,
   SUM(IF(mod = 1, 1, 0)) AS mod1,
   SUM(IF(mod = 2, 1, 0)) AS mod2,
   SUM(IF(mod = 3, 1, 0)) AS mod3
FROM
   DW_RM_Log
WHERE
   ...
GROUP BY
   year, month
WITH ROLLUP
HAVING year IS NOT NULL AND month IS NOT NULL

---

我不能只插入orderby year，month DESC，因为我得到了以下错误：“SQLSTATE[HY000]：一般错误：1221 CUBE/ROLLUP和orderby的用法不正确”。有什么建议吗？

要回答您关于在带有汇总的

查询上强制执行
订单的具体问题，只需将其转换为子查询：

SELECT *
FROM
(
SELECT
   month,
   year,
   SUM(IF(mod = 1, 1, 0)) AS mod1,
   SUM(IF(mod = 2, 1, 0)) AS mod2,
   SUM(IF(mod = 3, 1, 0)) AS mod3
FROM
   DW_RM_Log
WHERE
   ...
GROUP BY
   year, month
WITH ROLLUP
HAVING year IS NOT NULL AND month IS NOT NULL
) a 
ORDER BY year, month DESC

要回答有关在使用汇总的
查询上强制执行
ORDER BY
的特定问题，只需将其转换为子查询：

SELECT *
FROM
(
SELECT
   month,
   year,
   SUM(IF(mod = 1, 1, 0)) AS mod1,
   SUM(IF(mod = 2, 1, 0)) AS mod2,
   SUM(IF(mod = 3, 1, 0)) AS mod3
FROM
   DW_RM_Log
WHERE
   ...
GROUP BY
   year, month
WITH ROLLUP
HAVING year IS NOT NULL AND month IS NOT NULL
) a 
ORDER BY year, month DESC

在MySQL中，
groupby
进行排序。虽然隐式排序现在已被弃用，但您仍然可以安全地执行显式排序。以下内容应满足您的要求：

SELECT month, year,
       SUM(mod = 1) AS mod1, SUM(mod = 2) AS mod2, SUM(mod = 3) AS mod3
FROM DW_RM_Log
WHERE ...
GROUP BY year DESC, month DESC WITH ROLLUP
HAVING year IS NOT NULL AND month IS NOT NULL;

注意，我还简化了
sum（）
条件。在MySQL中，您可以只使用条件本身，而不是在MySQL中包含
if（）
，
groupby
进行排序。虽然隐式排序现在已被弃用，但您仍然可以安全地执行显式排序。以下内容应满足您的要求：

SELECT month, year,
       SUM(mod = 1) AS mod1, SUM(mod = 2) AS mod2, SUM(mod = 3) AS mod3
FROM DW_RM_Log
WHERE ...
GROUP BY year DESC, month DESC WITH ROLLUP
HAVING year IS NOT NULL AND month IS NOT NULL;

注意，我还简化了
sum（）
条件。在MySQL中，您可以只使用条件本身，而不包括
if（）