--数据库中插入数据或执行sql语句时一直报下面这个错误:
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

原因:这是数据库的sql_mode设置的有问题。Mysql可以支持不同的SQL模式,不同的SQL模式会有不同的语法,执行不同的数据校验简查。

首先,可以先查看一下数据库现在的sql_mode的值,sql语句为:

select version(), @@sql_mode;

获取结果可能如下,不同的设置查询出来的有区别:

然后可以使用如下语句,去设置自己需要的sql_mode.

SET sql_mode=(SELECT REPLACE(@@sql_mode,'ONLY_FULL_GROUP_BY',''));

二、尝试第二种方案

1、查看sql_mode

select @@sql_mode
查询出来的值为:

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

2、去掉ONLY_FULL_GROUP_BY,重新设置值。

set @@sql_mode =‘STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION‘;
3、上面是改变了全局sql_mode,对于新建的数据库有效。对于已存在的数据库,则需要在对应的数据下执行:

set sql_mode =‘STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION‘;
或者:
在my.cnf 里面设置
sql_mode='STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION'
在sql_mode 中去掉only_full_group_by

传送门:https://blog.csdn.net/u012259256/article/details/56482218

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