MySQL 合并来自相同方案表的 UNION 的结果

Question

有两个具有相同结构的表:'imsc_storage_users' & 'imsc_storage_users_archive'。

我当前的选择/联合:

SELECT `cli`,`ts`,`questions`, `answers`,`correct`,`last`,`minutes` 
FROM  `imsc_storage_users`
UNION DISTINCT
SELECT `cli`,`ts`,`questions`, `answers`,`correct`,`last`,`minutes` 
FROM  `imsc_storage_users_archive`
ORDER BY `correct` DESC,`minutes` ASC

我得到这些结果:

+--------------+---------------------+-----------+---------+---------+------+---------+
| cli          | ts                  | questions | answers | correct | last | minutes |
+--------------+---------------------+-----------+---------+---------+------+---------+
| 111111111111 | 2011-12-22 11:13:57 |        30 |      29 |      14 |   30 | 1305.47 |
| 222222222222 | 2011-12-15 13:39:16 |        26 |      24 |      13 |   24 |   15.67 |
| 333333333333 | 2011-12-15 13:39:39 |        26 |      25 |      11 |   25 |   15.18 |
| 444444444444 | 2011-12-15 13:39:39 |        25 |      21 |      11 |   25 |  280.53 |
| 111111111111 | 2011-12-22 11:13:57 |        25 |      21 |      10 |   25 |  373.87 |
| 555555555555 | 2011-12-19 15:46:15 |        11 |      10 |       5 |   10 |     3.8 |
| 666666666666 | 2011-12-15 13:39:16 |        14 |      10 |       4 |   10 |  321.64 |
| 777777777777 | 2011-12-19 08:34:36 |        15 |      11 |       4 |   13 |  474.66 |

注意到“111111111111”出现了两次？

我希望将其合并，因此在结果集中我得到一行“111111111111”，它合并/汇总了所有字段； '问题' =>> 55 ....等等'。

正确的 SQL 是什么？
性能在这里不是问题。

谢谢!

Answer 1

SELECT `cli`,max(`ts`) AS ts, sum(`questions`) as questions, sum(`answers`) as answers,sum(`correct`) as correct,sum(`last`) as last,sum(`minutes`) as minutes
FROM (
  SELECT `cli`,`ts`,`questions`, `answers`,`correct`,`last`,`minutes` 
  FROM  `imsc_storage_users`
  UNION ALL
  SELECT `cli`,`ts`,`questions`, `answers`,`correct`,`last`,`minutes` 
  FROM  `imsc_storage_users_archive`
) AS baseview
GROUP BY cli
ORDER BY `correct` DESC,`minutes` ASC