MySQL 不同，group_concat 和计数问题

Question

我有一个table。

+----------+----------------+--------+
| orderid  | barcode        | status |
+----------+----------------+--------+
| R-R34184 | K2020101500001 |      1 |
| R-R34184 | K2020101500001 |      1 |
| R-R34184 | K2020101500001 |      0 |
| R-R34184 | K2020101500001 |      0 |
| R-R34184 | K2020101500002 |      2 |
| R-R34184 | K2020101500002 |      2 |
| R-R34184 | K2020101500002 |      2 |
| R-R34184 | K2020101500002 |      2 |
| R-R34184 | K2020101500003 |      1 |
| R-R34184 | K2020101500003 |      1 |
| R-R34184 | K2020101500003 |      0 |
| R-R34184 | K2020101500003 |      0 |
| R-R34185 | K2020101500005 |      0 |
| R-R34185 | K2020101500005 |      0 |
| R-R34185 | K2020101500005 |      0 |
| R-R34185 | K2020101500005 |      0 |
| R-R34185 | K2020101500006 |      0 |
| R-R34185 | K2020101500006 |      0 |
| R-R34185 | K2020101500006 |      0 |
| R-R34185 | K2020101500006 |      0 |
| R-R34185 | K2020101500004 |      0 |
| R-R34185 | K2020101500004 |      0 |
| R-R34185 | K2020101500004 |      0 |
| R-R34185 | K2020101500004 |      0 |
| R-R34185 | K2020101500007 |      0 |
| R-R34185 | K2020101500007 |      0 |
| R-R34185 | K2020101500007 |      0 |
| R-R34185 | K2020101500007 |      0 |
| R-R34185 | K2020101500008 |      0 |
| R-R34185 | K2020101500008 |      0 |
| R-R34185 | K2020101500008 |      0 |
| R-R34185 | K2020101500008 |      0 |
+----------+----------------+--------+

我想查询如下： DISTINCT orderby、CONCAT 状态和 COUNT 状态

+----------+---------------+--------------+
| orderid  | status_concat | status_count |
+----------+---------------+--------------+
| R-R34184 | 0,1,2         | 3            |
+----------+---------------+--------------+
| R-R34185 | 0             | 1            |
+----------+---------------+--------------+

我尝试了几个代码，任何子查询，分组，但都没有在一起。 如果有人能帮忙，谢谢。

Answer 1

那只是聚合函数 group by 和 distinct group_concat() 和 count():

select orderid, 
    group_concat(distinct status order by status) status_concat, 
    count(distinct status) status_count
from mytable
group by orderid

Answer 2

我想你想要 distinct:

select orderid, group_concat(distinct status order by status), count(distinct status)
from t
group by orderid;