Mac 的mysql5.7没有配置文件，如何解决only_full_group_by 问题

￡神魔★判官ぃ 2021-12-05 02:21 431阅读 0赞

转载自：[https://blog.csdn.net/daniel1227/article/details/96325098][https_blog.csdn.net_daniel1227_article_details_96325098]

数据库版本是5.7版本，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

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2RhbmllbDEyMjc_size_16_color_FFFFFF_t_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，发现没有mysql 的配置文件。不管是  
/etc 下还是 mysql 的support-files 下都没有

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

[https_blog.csdn.net_daniel1227_article_details_96325098]: https://blog.csdn.net/daniel1227/article/details/96325098
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2RhbmllbDEyMjc_size_16_color_FFFFFF_t_70]: /images/20211205/017010d6ee404399809da822b54827bc.png