我的SQL查询以主键值的降序获取不同的记录

Question

I am executing the below query

SELECT SQL_CALC_FOUND_ROWS movie_id,video_id,created_date 
FROM video_logs 
WHERE user_id = 2693 AND 
    studio_id=223 AND 
    (DATE_FORMAT(created_date,"%Y-%m-%d") BETWEEN "2018-03-16 11:12:12" AND 
    "2018-04-11 20:21:44") 
order by id desc;



+----------+----------+---------------------+
| movie_id | video_id | created_date        |
+----------+----------+---------------------+
|     3751 |     6711 | 2018-04-11 02:19:18 |
|      544 |     2347 | 2018-04-11 14:16:57 |
|      564 |     2367 | 2018-04-11 14:16:08 |
|     1083 |     2998 | 2018-04-11 02:15:21 |
|      544 |     2347 | 2018-04-11 14:14:55 |
|      536 |     2339 | 2018-04-11 14:14:09 |
|     3014 |     5857 | 2018-04-11 01:58:03 |
|     3011 |     5855 | 2018-04-11 13:55:37 |
|     3011 |     5855 | 2018-04-11 13:39:59 |
|     3751 |     6711 | 2018-04-11 01:39:08 |
|     3014 |     5857 | 2018-04-11 01:38:37 |
|     3007 |     5852 | 2018-04-11 13:37:49 |
+----------+----------+---------------------+

I wish distinct out put from the above result without hampering the order of movie_id column.

Like My out put should have movie_id column as follows

movie_id

3751 544 564 1083 536 3014 3011 3007

Thanks In advance for helping me out.

Answer 1

You need to group by the movie ID. Also, you can use either MIN() or MAX() on the created date to choose which to show when there are multiple rows for a movie_id.

SELECT SQL_CALC_FOUND_ROWS movie_id,video_id,min(created_date) as created_date
FROM video_logs 
WHERE user_id = 2693 AND 
    studio_id=223 AND 
    DATE_FORMAT(created_date,"%Y-%m-%d") BETWEEN "2018-03-16 11:12:12" AND "2018-04-11 20:21:44"
group by movie_id
order by id desc;

Answer 2

Group your column by then use MAX function to get the latest (highest) datetime value.

SELECT SQL_CALC_FOUND_ROWS movie_id,video_id,MAX(created_date) as created_date  
FROM video_logs 
WHERE user_id = 2693 AND 
    studio_id=223 AND 
    (DATE_FORMAT(created_date,"%Y-%m-%d") BETWEEN "2018-03-16 11:12:12" AND 
    "2018-04-11 20:21:44") 
GROUP BY SQL_CALC_FOUND_ROWS, video_id
order by id desc;