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Issues related to the group_concat function in apsaradb RDS for MySQL instances - ApsaraDB RDS - Alibaba Cloud Documentation Center
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mysql - Selecting multiple columns from multiple rows in one column (subquery?) - Database Administrators Stack Exchange
Possibility to change group_concat_max_len in my.cnf · Issue #206 · geerlingguy/ansible-role-mysql · GitHub
![Issues related to the group_concat function in apsaradb RDS for MySQL instances - ApsaraDB RDS - Alibaba Cloud Documentation Center Issues related to the group_concat function in apsaradb RDS for MySQL instances - ApsaraDB RDS - Alibaba Cloud Documentation Center](http://static-aliyun-doc.oss-cn-hangzhou.aliyuncs.com/assets/img/8259/155781163247227_zh-CN.png)
Issues related to the group_concat function in apsaradb RDS for MySQL instances - ApsaraDB RDS - Alibaba Cloud Documentation Center
![group concatenation - Problem with mysql group_concat, complex query, not getting required result - Database Administrators Stack Exchange group concatenation - Problem with mysql group_concat, complex query, not getting required result - Database Administrators Stack Exchange](https://i.stack.imgur.com/YSRHW.png)