my sql field sum using another field to differentiate and then sort it
I would like to ask something about query using mysql
I have this table called video_stat, and here's the field
CREATE TABLE IF NOT EXISTS `video_stat` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`video_id` int(10) NOT NULL,
`member_id` int(10) NOT NULL,
`counter` int(11) NOT NULL,
`daydate` varchar(15) NOT NULL,
`monthdate` varchar(10) NOT NULL,
`epochtime` text NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
the 'counter' field will be updated per day
and my question is that, I would like to sort this field, by sum-ing the counter as total per video_id and then sort them by total per video_id to then display the list on a popular video page. how can I do that?
I thought that it would work using this query:
SELECT SUM( counter ) AS total_viewed, member_id, video_id
FROM member_video_stat
but it will only sums up everything on the counter field and return a single row since the SUM(counter) part did not count for each and particular video_id
illustration:
current table
+--------------+-----------+---------+
| id| video_id | mem开发者_StackOverflow社区ber_id | counter |
+---+----------+-----------+---------+
| 4 | 6 | 2 | 1 |
| 5 | 9 | 6 | 1 |
| 6 | 12 | 2 | 1 |
| 7 | 6 | 2 | 1 |
| 8 | 12 | 2 | 1 |
+--------------+-----------+---------+
to something like
+----------+-----------+---------+
| video_id | member_id | total |
+----------+-----------+---------+
| 6 | 2 | 2 |
| 9 | 6 | 1 |
| 12 | 2 | 2 |
+----------+-----------+---------+
Give this a try
SELECT SUM(counter) AS total_viewed, member_id, video_id
FROM member_video_stat
GROUP BY video_id
ORDER BY total_viewed DESC
Hoa
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