MYSQL查詢報錯 Expression #4 of SELECT list is not in GROUP BY clause and contains nonaggregated column，

完整報錯如下：Expression #4 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'sa.type' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by

原因：在MySQL5.7.5後，默認開啓了ONLY_FULL_GROUP_BY，所以導致了之前的一些SQL無法正常執行，其實，是我們的SQL不規範造成的，因爲group by 之後，返回的一些數據是不確定的，所以纔會出現這個錯誤。

解決辦法：

修改下sql_mode即可：

select version(), @@sql_mode;

 

修改：

SET sql_mode=(SELECT REPLACE(@@sql_mode,'ONLY_FULL_GROUP_BY',''));

參考地址：https://cloud.tencent.com/developer/article/1404739