MySQL报错1055 - Expression #3 of SELECT list is not in GROUP BY clause and contains nonaggregated colu

男娘i 2023-07-05 11:59 33阅读 0赞

报错内容如下：

1055 - Expression \#3 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'fbjs.mscc.ContactTime' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql\_mode=only\_full\_group\_by, Time: 0.000000s

1055 - Expression #3 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'fbjs.mscc.ContactTime' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by, Time: 0.000000s

前情提示：

测试数据库mysql5.6（centOS6.8）、mysql8.0（Mac）

5.6可以执行，8.0报错

测试SQL大致语句：

SELECT msc.CustomerID,msc.CustomerName,mscc.ContactTime FROM membership_customer msc LEFT JOIN membership_customercontact mscc ON (msc.CustomerID = mscc.CustomerID AND  mscc.`Status` = 1 ) WHERE msc.`Status` !=4 AND (msc.FollowUpStatus = 2 OR msc.FollowUpStatus = 3 OR msc.`Status` = 6) GROUP BY msc.CustomerID ORDER BY mscc.ContactTime DESC

SELECT msc.CustomerID,msc.CustomerName,msc.AddTime AS CreateTime,msc.EmployeeID,he.EmployeeName,mscc.ContactTime FROM membership_customer msc LEFT JOIN membership_customercontact mscc ON (msc.CustomerID = mscc.CustomerID AND  mscc.`Status` = 1 ) LEFT JOIN human_employee he ON he.EmployeeID = msc.EmployeeID WHERE msc.`Status` !=4 AND (msc.FollowUpStatus = 2 OR msc.FollowUpStatus = 3 OR msc.`Status` = 6) AND msc.EmployeeID = '1' GROUP BY msc.CustomerID ORDER BY mscc.ContactTime DESC

在mysql5.7以上的版本中，对于 group by 的这种聚合操作，如果在select 中的列，没有在group by 中出现，那么这个SQL是不合法的，因为列不在group by的从句中，所以对于设置了这个mode的数据库，在使用group by 的时候，就要用MAX()，SUM()，ANT\_VALUE()的这种聚合函数，才能完成GROUP BY 的聚合操作  
参考文档：

[https://dev.mysql.com/doc/refman/5.7/en/sql-mode.html\#sql-mode-setting][https_dev.mysql.com_doc_refman_5.7_en_sql-mode.html_sql-mode-setting]

[Mode Changes in MySQL 5.7][].

ONLY\_FULL\_GROUP\_BY的设定，将不允许查询字段包括非聚集列

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMxNzA4NzYz_size_16_color_FFFFFF_t_70][]

查询mysql服务器版本：以下命令在终端或者navicat中输入执行均可。  
select @@version  
![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMxNzA4NzYz_size_16_color_FFFFFF_t_70 1][]

\#查看sql\_mode的语法

SELECT @@GLOBAL.sql\_mode;

SELECT @@SESSION.sql\_mode;  
显示结果：![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMxNzA4NzYz_size_16_color_FFFFFF_t_70 2][]

ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION

5.6.22-enterprise-commercial-advanced企业版sql\_mode默认：

STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION

方法一:

查询mysql 1055错误码发现问题为在mysql的配置中如果设置了sql\_mode包含ONLY\_FULL\_GROUP\_BY值得话，在进行查询时必须要将select的字段都包含在group by 中。  
即 select a,b from xxx group by a,b  
否则就会报错

方法二:

\#修改sql\_mode的语法

通过修改配置文件my.cnf来解决这个问题的。  
1. 关闭正在运行的mysql  
2. 修改/etc/my.cnf，将sql\_mode=中的only\_full\_group\_by给删掉  
3. 重启mysql，再执行出错的sql发现能成功执行了

如果没有my.cnf文件，解决方式查看（有模板）[https://blog.csdn.net/qq\_31708763/article/details/104357798][https_blog.csdn.net_qq_31708763_article_details_104357798]

默认优先选取/etc/my.cnf这个是启动脚本里轮询的第一个位置。

推荐使用更改my.cnf方法更改sql\_mode，以防止后续重启mysql服务或者服务器配置失效。另外提一句，8.0版本目前测试是在my.cnf中配置忽略大小写无用，除非在数据库初始化时候指定，估计是高版本更新都是这样。

sql\_mode常用值：

ONLY_FULL_GROUP_BY： 对于GROUP BY聚合操作，如果在SELECT中的列，没有在GROUP
    BY中出现，那么这个SQL是不合法的，因为列不在GROUP BY从句中
     
    NO_AUTO_VALUE_ON_ZERO： 该值影响自增长列的插入。默认设置下，插入0或NULL代表生成下一个自增长值。如果用户
    希望插入的值为0，而该列又是自增长的，那么这个选项就有用了。
     
    STRICT_TRANS_TABLES： 在该模式下，如果一个值不能插入到一个事务表中，则中断当前的操作，对非事务表不做限制
    NO_ZERO_IN_DATE： 在严格模式下，不允许日期和月份为零
     
    NO_ZERO_DATE： 设置该值，mysql数据库不允许插入零日期，插入零日期会抛出错误而不是警告。
     
    ERROR_FOR_DIVISION_BY_ZERO： 在INSERT或UPDATE过程中，如果数据被零除，则产生错误而非警告。如
    果未给出该模式，那么数据被零除时MySQL返回NULL
     
    NO_AUTO_CREATE_USER： 禁止GRANT创建密码为空的用户
     
    NO_ENGINE_SUBSTITUTION：
    如果需要的存储引擎被禁用或未编译，那么抛出错误。不设置此值时，用默认的存储引擎替代，并抛出一个异常
     
    PIPES_AS_CONCAT：
    将”||”视为字符串的连接操作符而非或运算符，这和Oracle数据库是一样的，也和字符串的拼接函数Concat相类似
     
    ANSI_QUOTES： 启用ANSI_QUOTES后，不能用双引号来引用字符串，因为它被解释为识别符

方法三：修改global sql\_mode:

SET GLOBAL sql_mode = 'STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION';

修改之后，重新新建查询，测试结果OK，如下图：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMxNzA4NzYz_size_16_color_FFFFFF_t_70 3][]

因为方法3太方便了，也无须管配置文件，只需在命令行或者客户端软件执行SQL语句就行，接下来测试重启mysql服务此法是否依旧有效。（此处直接重启了电脑）

sudo /usr/local/mysql/support-files/mysql.server start
    sudo /usr/local/mysql/support-files/mysql.server stop
    
    
    sudo /usr/local/mysql/support-files/mysql.server restart

重启后测试无效。恢复原来的了。

最后，推荐使用方法二，更改配置文件，Mac下注意目录权限问题，如果需要也可以在系统偏好设置里指定配置文件位置，如下图所示：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMxNzA4NzYz_size_16_color_FFFFFF_t_70 4][]

[https_dev.mysql.com_doc_refman_5.7_en_sql-mode.html_sql-mode-setting]: https://dev.mysql.com/doc/refman/5.7/en/sql-mode.html#sql-mode-setting
[Mode Changes in MySQL 5.7]: https://dev.mysql.com/doc/refman/5.7/en/sql-mode.html#sql-mode-changes
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMxNzA4NzYz_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/2020021714453353.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMxNzA4NzYz,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMxNzA4NzYz_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/2020021714510773.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMxNzA4NzYz,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMxNzA4NzYz_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20200217145434300.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMxNzA4NzYz,size_16,color_FFFFFF,t_70
[https_blog.csdn.net_qq_31708763_article_details_104357798]: https://blog.csdn.net/qq_31708763/article/details/104357798
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMxNzA4NzYz_size_16_color_FFFFFF_t_70 3]: https://img-blog.csdnimg.cn/20200218135314556.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMxNzA4NzYz,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMxNzA4NzYz_size_16_color_FFFFFF_t_70 4]: https://img-blog.csdnimg.cn/20200219100832110.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMxNzA4NzYz,size_16,color_FFFFFF,t_70

MySQL报错1055 - Expression #3 of SELECT list is not in GROUP BY clause and contains nonaggregated colu

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