MySQL5.7.21报错：[Err] 1055

最新推荐文章于 2021-12-24 14:28:48 发布

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最新推荐文章于 2021-12-24 14:28:48 发布

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文章标签：数据库

原文链接：http://www.cnblogs.com/elontian/p/8708891.html

本文介绍如何解决MySQL中的1055错误，该错误通常发生在使用ONLY_FULL_GROUP_BY模式下，当GROUP BY子句不符合规则时出现。文中提供了通过调整sql_mode参数来临时解决此问题的方法，并给出了修改my.cnf文件以永久解决此问题的步骤。

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[Err] 1055 - Expression #1 of ORDER BY clause is not in GROUP BY clause and contains nonaggregated column 'information_schema.PROFILING.SEQ' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by

mysql> select @@sql_mode;
+-------------------------------------------------------------------------------------------------------------------------------------------+
| @@sql_mode |
+-------------------------------------------------------------------------------------------------------------------------------------------+
| ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION |
+-------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)

mysql> SET sql_mode=(SELECT REPLACE(@@sql_mode,'ONLY_FULL_GROUP_BY',''));
Query OK, 0 rows affected (0.00 sec)

mysql> select @@sql_mode;
+------------------------------------------------------------------------------------------------------------------------+
| @@sql_mode |
+------------------------------------------------------------------------------------------------------------------------+
| STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION |
+------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)

修改my.cnf，添加：

sql_mode=STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION

only_full_group_by ：使用这个就是使用和oracle一样的group by规则, select的列都要在group by中,或者本身是聚合列(SUM,AVG,MAX,MIN)

转载于:https://www.cnblogs.com/elontian/p/8708891.html