[英]MySQL combine results from UNION of same-scheme tables
有两个具有相同结构的表:'imsc_storage_users'和'imsc_storage_users_archive'。
我当前的SELECT / UNION:
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
我得到了这些结果:
+--------------+---------------------+-----------+---------+---------+------+---------+
| 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 |
请注意'111111111111'出现两次?
我想要它被组合, 所以在结果集中我得到一行'111111111111',它结合/求和所有字段; 'questions'= >> 55 ....等' 。
什么是正确的SQL?
性能在这里不是问题。
谢谢!
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
尝试:
SELECT `cli`,
`ts`,
sum(`questions`),
sum(`answers`),
sum(`correct`),
sum(`last`),
sum(`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`) V
group by `cli`, `ts`
ORDER BY 5 DESC, 7 ASC
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