使用 ROLLUP 修饰符时，是否可以使用 MySQL ORDER BY 子句对结果进行排序？

摘要行将位于升序的开头和降序的结尾。请考虑以下示例以更清楚地理解它 -

mysql> Select * from (Select sr, SUM(PRICE) AS PRICE from ratelist GROUP BY sr WITH ROLLUP) AS Price ORDER BY Sr DESC;
+------+-------+
| sr   | PRICE |
+------+-------+
|    5 |   250 |
|    4 |   850 |
|    3 |  1005 |
|    2 |   630 |
|    1 |   502 |
| NULL |  3237 |
+------+-------+
6 rows in set (0.00 sec)

mysql> Select * from (Select sr, SUM(PRICE) AS PRICE from ratelist GROUP BY sr WITH ROLLUP) AS Price ORDER BY Sr ASC;
+------+-------+
| sr   | PRICE |
+------+-------+
| NULL |  3237 |
|    1 |   502 |
|    2 |   630 |
|    3 |  1005 |
|    4 |   850 |
|    5 |   250 |
+------+-------+
6 rows in set (0.01 sec)

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