Mysql解決SELECT list is not in GROUP BY clause and contains nonaggregated column 問題
阿新 • • 發佈:2018-11-22
轉自:https://blog.csdn.net/u011676300/article/details/79564446
在使用GROUP BY對Mysql的資料表進行查詢時如果出現以下錯誤
select * from user group by age;
ERROR 1055 (42000): Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'test.user.user_id' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by
解決辦法:
1.查詢mysql 相關mode
select @@global.sql_mode;
可以看到模式中包含了ONLY_FULL_GROUP_BY,只要沒有這個配置即可。
我的Mysql版本是5.7.21,預設是帶了ONLY_FULL_GROUP_BY模式。
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
2.重設模式值
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`;
3.重啟Mysql即可