Expression #1 of ORDER BY clause is not in SELECT list, references column 'ekbX1.t0.name' which is not in SELECT list; this is incompatible with DISTINCT

報錯信息： 

Expression #1 of ORDER BY clause is not in SELECT list, references column 'ekbX1.t0.name' which is not in SELECT list; this is incompatible with DISTINCT

問題原因：

　　mysql5.7.5及以上版本將sql_mode的ONLY_FULL_GROUP_BY模式默認設置為打開狀態，會導致一些錯誤：

1、我們使用GROUP BY查詢時，出現在SELECT字段后面的只能是GROUP BY后面的分組字段，或使用聚合函數包裹着的字段，否則會報錯如下信息：
　　Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'database.table.column' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by
2、當使用ORDER BY查詢時，不能使用SELECT DISTINCT去重查詢。否則會報錯如下信息：
   Expression #1 of ORDER BY clause is not in SELECT list, references column 'database.table.column' which is not in SELECT list; this is incompatible with DISTINCT

查詢驗證：

select version(); 查詢版本

select @@global.sql_mode   查詢sql_mode

解決方法：

   去除ONLY_FULL_GROUP_BY

1、通過命令關閉：
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';
但該方法在重啟Mysql服務后會失效，重啟服務后會失效

2、通過修改mysql的配置文件關閉ONLY_FULL_GROUP_BY SQL模式

sudo vim /etc/mysql/conf.d/mysql.cnf

文件底部追加:

[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

 

保存並重啟mysql

sudo service mysql restart