MYSQL---Expression #1 of ORDER BY clause is not in GROUP BY clause and contains nonaggregated column '
MYSQL---Expression #1 of ORDER BY clause is not in GROUP BY clause and contains nonaggregated column '
--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;
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(推荐修改My.ini)
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.ini 里面设置(Linux是my.cnf)
sql_mode='STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION'
注意:mysql8不支持NO_AUTO_CREATE_USER,所以修改文件时候要删除它。