Modify MySQL group error expression 1 of select list is not in group

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Method 1 ：

1、 Through the bottom SQL Statement query ：

SELECT @@sql_mode;
2、 See if it exists ONLY_FULL_GROUP_BY Field ？

ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION
3、 If there is a field above , Use below SQL sentence ：

set @@global.sql_mode
=‘STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION’;

Method 2 ：

stay mysql Create two files in the figure under the installation directory of

**

my.ini The contents of the document ：

**

# This database does not my.ini file , The current document is added later

[client]
default-character-set = utf8mb4
[mysql]
default-character-set = utf8mb4
[mysqld]
character-set-client-handshake = FALSE
character-set-server = utf8mb4
collation-server = utf8mb4_bin
init_connect=‘SET NAMES utf8mb4’

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 leading # to turn on a very important data integrity option: logging

changes to the binary log between backups.

log_bin

These are commonly set, remove the # and set as required.

# This parameter specifies the installation MySQL Installation path for , Filling in the full path can solve the problems caused by the relative path .
basedir = D:/Program Files/mysql-5.7.23-winx64
# This parameter specifies MySQL Where to put your database files . Database file is what we often call MySQL data file .
datadir = D:/Program Files/mysql-5.7.23-winx64/data

port = 3306

server_id = …

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 = 16M
read_rnd_buffer_size = 16M

# Define what should be supported sql grammar , Check the data and so on
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

max_allowed_packet=300M

​my-default.ini The contents of the document ：

[mysqld]
character-set-server=utf8mb4
[mysql]
default-character-set=utf8mb4
sql-mode=STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
[mysql]

Set up mysql Client default character set

default-character-set=utf8
[mysqld]
# Set up 3306 port
port = 3306

Set up mysql Installation directory

basedir=D:\Program Files\mysql-5.7.23-winx64

Maximum connections allowed

max_connections=200

The character set used by the server defaults to 8 Bit coded latin1 Character set

character-set-server=utf8

The default storage engine that will be used when creating a new table

default-storage-engine=INNODB