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

上面的报错，可以通过在mysql修改配置文件解决：

查询配置文件位置：

find / -name my.cnf

在根目录下（既全局查找）文件名为my.cnf的文件

本机得到的结果：

/etc/my.cnf

接着修改文件：

vi /etc/my.cnf

如果文件中有名称为 sql_mode 的变量，则将其值改为：

NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

如果没有该变量，则在[mysqld]下面添加一行：

sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

过程如下：

[root@VM_48_116_centos ~]# find / -name my.cnf
/etc/my.cnf
[root@VM_48_116_centos ~]# vi /etc/my.cnf

# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/8.0/en/server-configuration-defaults.html

[mysqld]
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
#
# Remove leading # and set to the amount of RAM for the most important data
# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.
# innodb_buffer_pool_size = 128M
#
# Remove the leading "# " to disable binary logging
# Binary logging captures changes between backups and is enabled by
# default. It's default setting is log_bin=binlog
# disable_log_bin
#
# Remove leading # to set options mainly useful for reporting servers.
# The server defaults are faster for transactions and fast SELECTs.
# Adjust sizes as needed, experiment to find the optimal values.
# join_buffer_size = 128M
# sort_buffer_size = 2M
# read_rnd_buffer_size = 2M
#
# Remove leading # to revert to previous value for default_authentication_plugin,
# this will increase compatibility with older clients. For background, see:
# https://dev.mysql.com/doc/refman/8.0/en/server-system-variables.html#sysvar_default_authentication_plugin
# default-authentication-plugin=mysql_native_password

datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock

log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
~                                                                                                                                                                  
~                                                                                                                                                                  
"/etc/my.cnf" 32L, 1295C

wq!保存文件

重新启动mysql，让配置生效：service mysqld restart

标签：nonaggregated,GROUP,log,default,clause,cnf,mysqld,mysql,my
来源： https://blog.csdn.net/SICAUliuy/article/details/88084770