1055 - Expression #1 of ORDER BY clause is not in GROUP BY clause and contains nonaggregated column

完整错误

今天更换数据库测试发现此问题，个人记录

### Error querying database.  Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Expression #1 of ORDER BY clause is not in GROUP BY clause and contains nonaggregated column 'a.add_time' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by
### The error may exist in class path resource [mapper/tisane/TisaneMapper.xml]
### The error may involve com.*.core.dao.customized.TisaneMapper.selectTstatisticByDay-Inline
### The error occurred while setting parameters
### Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Expression #1 of ORDER BY clause is not in GROUP BY clause and contains nonaggregated column 'a.add_time' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by
; bad SQL grammar []; nested exception is com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Expression #1 of ORDER BY clause is not in GROUP BY clause and contains nonaggregated column 'a.add_time' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by] 

官方文档解释：

ONLY_FULL_GROUP_BY

拒绝选择列表，HAVING条件或ORDER BY列表引用非聚合列的查询，这些 列既不在GROUP BY子句中命名，也不在功能上依赖于（唯一确定的） GROUP BY列。

从MySQL 5.7.5开始，默认的SQL模式包括 ONLY_FULL_GROUP_BY。（在5.7.5之前，MySQL不检测功能依赖性，ONLY_FULL_GROUP_BY默认情况下不启用。有关5.7.5之前行为的描述，请参阅MySQL 5.6参考手册。）

标准SQL的MySQL扩展允许HAVING子句中的引用 到选择列表中的别名表达式。在MySQL 5.7.5之前，启用 ONLY_FULL_GROUP_BY 禁用此扩展，因此要求 HAVING使用非混淆表达式编写子句。从MySQL 5.7.5开始，这个限制被取消，因此HAVING无论是否ONLY_FULL_GROUP_BY启用，该子句都可以引用别名 。

解决方案

请参见 第12.19.3节“GROUP BY的MySQL处理”，里面有很详细的说明和实例。