Warning: file_get_contents(/data/phpspider/zhask/data//catemap/6/opengl/4.json): failed to open stream: No such file or directory in /data/phpspider/zhask/libs/function.php on line 167

Warning: Invalid argument supplied for foreach() in /data/phpspider/zhask/libs/tag.function.php on line 1116

Notice: Undefined index: in /data/phpspider/zhask/libs/function.php on line 180

Warning: array_chunk() expects parameter 1 to be array, null given in /data/phpspider/zhask/libs/function.php on line 181
Mysql 如何使用group by didmd5选择事件类型_Mysql - Fatal编程技术网

Mysql 如何使用group by didmd5选择事件类型

Mysql 如何使用group by didmd5选择事件类型,mysql,Mysql,如果要在一行中显示不同的事件类型,可以尝试: events_id | didmd5 | article_id | event_type | count | datetime | last_updated | +-----------+---------------------------------+------------+------------+-------+------------+-----------------

如果要在一行中显示不同的事件类型,可以尝试:

 events_id | didmd5                          | article_id | event_type | count | datetime   | last_updated        |
+-----------+---------------------------------+------------+------------+-------+------------+---------------------+
|         1 | f8fdf8b7315c884b87361a4dd73d878 |          5 | share      |     1 | 2018-06-01 | 2018-06-01 08:40:40 |
|         2 | f8fdf8b7315c884b87361a4dd73d878 |          5 | like       |     1 | 2018-06-01 | 2018-06-01 08:42:26 |
|         3 | f8fdf8b7315c884b87361a4dd73d878 |          5 | read       |     1 | 2018-06-01 | 2018-06-01 08:42:33 |
|         4 | f8fdf8b7315c884b87361a4dd73d878 |          5 | readmore   |     2 | 2018-06-01 | 2018-06-01 08:47:07 |

您尝试了什么?您应该尝试自己编写代码。如果您有问题,请发布您尝试过的内容,并清楚解释哪些内容不起作用,然后提供。阅读一定要阅读。文章id像阅读分享阅读更多5 1 1 1 1 2我正在寻找这样的答案
SELECT didmd5, group_concat(event_type) from TABLE group by didmd5;