Mac 的mysql5.7没有配置文件，如何解决only_full_group_by 问题的另一个思路

我会带着你远行 2022-05-19 08:41 207阅读 0赞

数据库版本是5.7.19，在写语句的时候，只要涉及ORDER BY,就会报错，

ERROR 1055 (42000): Expression \#7 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'postscan.verifyDelayLog.auditor' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql\_mode=only\_full\_group\_by

这个时候，百度发现，是因为这个版本的mysql 数据库默认开启了 sql\_mode 字段的only\_full\_group\_by 属性。这个属性是在你写语句时，当你 ORDER BY 的字段不在select 的字段当中，都会报错。

`sql_mode` 属性是在mysql数据库，event表中，

![70][]

点进去，可以看到默认属性是

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

**解决这个问题，就需要修改这个字段的属性。**

**方法一**  
在navicat 里面直接针对event表进行修改

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 ';

**这样就能去掉only\_full\_group\_by 字段。但弊端是这个方法是针对session的，也就是说每次连接mysql 前，都需要set一次。**

**方法二**  
修改配置mysql的文件  
mac在安装这个版本的mysql的时候，我没有发现mysql 的配置文件。不管是  
/etc 下还是 mysql 的support-files 下都没有

![70 1][]

这个时候，可以自己在etc目录下创建一个

关闭mysql

sudo vim /etc/my.cnf  
然后往文件里写这个配置就ok。

\# Example MySQL config file for medium systems.    
  \#    
  \# This is for a system with little memory (32M - 64M) where MySQL plays    
  \# an important part, or systems up to 128M where MySQL is used together with    
  \# other programs (such as a web server)    
  \#    
  \# MySQL programs look for option files in a set of    
  \# locations which depend on the deployment platform.    
  \# You can copy this option file to one of those    
  \# locations. For information about these locations, see:    
  \# http://dev.mysql.com/doc/mysql/en/option-files.html    
  \#    
  \# In this file, you can use all long options that a program supports.    
  \# If you want to know which options a program supports, run the program    
  \# with the "--help" option.    
  \# The following options will be passed to all MySQL clients    
  \[client\]  
  default-character-set=utf8  
  \#password   = your\_password    
  port        = 3306    
  socket      = /tmp/mysql.sock     
  \# Here follows entries for some specific programs    
  \# The MySQL server    
  \[mysqld\]  
  character-set-server=utf8  
  init\_connect='SET NAMES utf8  
  port        = 3306    
  socket      = /tmp/mysql.sock    
  skip-external-locking    
  key\_buffer\_size = 16M    
  max\_allowed\_packet = 1M    
  table\_open\_cache = 64    
  sort\_buffer\_size = 512K    
  net\_buffer\_length = 8K    
  read\_buffer\_size = 256K    
  read\_rnd\_buffer\_size = 512K    
  myisam\_sort\_buffer\_size = 8M    
  character-set-server=utf8  
  sql\_mode='NO\_AUTO\_VALUE\_ON\_ZERO,STRICT\_TRANS\_TABLES,NO\_ZERO\_IN\_DATE,NO\_ZERO\_DATE,ERROR\_FOR\_DIVISION\_BY\_ZERO,NO\_AUTO\_CREATE\_USER,NO\_ENGINE\_SUBSTITUTION,PIPES\_AS\_CONCAT,ANSI\_QUOTES'    
  init\_connect='SET NAMES utf8'   
\# Don't listen on a TCP/IP port at all. This can be a security enhancement,    
\# if all processes that need to connect to mysqld run on the same host.    
\# All interaction with mysqld must be made via Unix sockets or named pipes.    
\# Note that using this option without enabling named pipes on Windows    
\# (via the "enable-named-pipe" option) will render mysqld useless!    
\#     
\#skip-networking

\# Replication Master Server (default)    
  \# binary logging is required for replication    
  log-bin=mysql-bin

\# binary logging format - mixed recommended    
    binlog\_format=mixed

\# required unique id between 1 and 2^32 - 1    
      \# defaults to 1 if master-host is not set    
      \# but will not function as a master if omitted    
      server-id   = 1

\# Replication Slave (comment out master section to use this)    
    \#    
    \# To configure this host as a replication slave, you can choose between    
    \# two methods :    
    \#    
    \# 1) Use the CHANGE MASTER TO command (fully described in our manual) -    
    \#    the syntax is:    
    \#    
    \#    CHANGE MASTER TO MASTER\_HOST=<host>, MASTER\_PORT=<port>,    
    \#    MASTER\_USER=<user>, MASTER\_PASSWORD=<password> ;    
    \#    
    \#    where you replace <host>, <user>, <password> by quoted strings and    
    \#    <port> by the master's port number (3306 by default).    
    \#    
    \#    Example:    
    \#    
    \#    CHANGE MASTER TO MASTER\_HOST='125.564.12.1', MASTER\_PORT=3306,    
    \#    MASTER\_USER='joe', MASTER\_PASSWORD='secret';    
    \#    
    \# OR    
    \#    
    \# 2) Set the variables below. However, in case you choose this method, then    
    \#    start replication for the first time (even unsuccessfully, for example    
    \#    if you mistyped the password in master-password and the slave fails to    
    \#    connect), the slave will create a master.info file, and any later    
    \#    change in this file to the variables' values below will be ignored and    
    \#    overridden by the content of the master.info file, unless you shutdown    
    \#    the slave server, delete master.info and restart the slaver server.    
    \#    For that reason, you may want to leave the lines below untouched    
    \#    (commented) and instead use CHANGE MASTER TO (see above)    
    \#    
    \# required unique id between 2 and 2^32 - 1    
    \# (and different from the master)    
    \# defaults to 2 if master-host is set    
    \# but will not function as a slave if omitted    
    \#server-id       = 2    
    \#    
    \# The replication master for this slave - required    
    \#master-host     =   <hostname>    
    \#    
    \# The username the slave will use for authentication when connecting    
    \# to the master - required    
    \#master-user     =   <username>    
    \#    
    \# The password the slave will authenticate with when connecting to    
    \# the master - required    
    \#master-password =   <password>    
    \#    
    \# The port the master is listening on.    
    \# optional - defaults to 3306    
    \#master-port     =  <port>    
    \#    
    \# binary logging - not required for slaves, but recommended    
    \#log-bin=mysql-bin

\# Uncomment the following if you are using InnoDB tables    
      \#innodb\_data\_home\_dir = /usr/local/mysql/data    
      \#innodb\_data\_file\_path = ibdata1:10M:autoextend    
      \#innodb\_log\_group\_home\_dir = /usr/local/mysql/data    
      \# You can set ..\_buffer\_pool\_size up to 50 - 80 %    
      \# of RAM but beware of setting memory usage too high    
      \#innodb\_buffer\_pool\_size = 16M    
      \#innodb\_additional\_mem\_pool\_size = 2M    
      \# Set ..\_log\_file\_size to 25 % of buffer pool size    
      \#innodb\_log\_file\_size = 5M    
      \#innodb\_log\_buffer\_size = 8M    
      \#innodb\_flush\_log\_at\_trx\_commit = 1    
      \#innodb\_lock\_wait\_timeout = 50

\[mysqldump\]    
        quick    
        max\_allowed\_packet = 16M

\[mysql\]    
          no-auto-rehash    
          \# Remove the next comment character if you are not familiar with SQL    
          \#safe-updates    
          default-character-set=utf8

\[myisamchk\]    
        key\_buffer\_size = 20M    
        sort\_buffer\_size = 20M    
        read\_buffer = 2M    
        write\_buffer = 2M

\[mysqlhotcopy\]    
          interactive-timeout

[70]: /images/20220519/d9b6eca75b194f089f8aaa144ca75dbe.png
[70 1]: /images/20220519/cdd0335a689a401ea3224be88521fa8e.png