When using MySQL, the following query is performed:

select * from `sys_user_group` group by `GROUP_ID`

The error message is as follows:

[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

The wrong reason is that my mysql version is 5.7, using the following statement query you know

select @@sql_mode;

It is set by default.

sql_mode=only_full_group_by

only_full_group_by : Using this is the same group rule as used and Oracle, the select of the select is in Group, or itself is the polymer column (SUM, AVG, MAX, MIN), in fact, this configuration is currently the personal feeling and Distinct, so Go out

Directly modify the mysql configuration file (my system is ubuntu16.04,/etc/mysql/mysql.conf.d/mysqld.cnf There is no SQL_Mode this configuration, so it is better, if it is other system, you don't have to add it)

[mysqld]

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

The full configuration of this mysql configuration file is as follows:

[mysqld_safe]
socket          = /var/run/mysqld/mysqld.sock
nice            = 0

[mysqld]
#
# * Basic Settings
#
user            = mysql
pid-file        = /var/run/mysqld/mysqld.pid
socket          = /var/run/mysqld/mysqld.sock
port            = 3306
basedir         = /usr
datadir         = /var/lib/mysql
tmpdir          = /tmp
lc-messages-dir = /usr/share/mysql
skip-external-locking
lower_case_table_names=1
character-set-server=utf8
sql_mode=STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
#
# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
#bind-address           = 127.0.0.1
#
# * Fine Tuning
#
key_buffer_size         = 16M
max_allowed_packet      = 16M
thread_stack            = 192K