[Err] 1055 - Expression #3 of SELECT list is not in GROUP BY clause and contains nonaggregated colum

1055 - Expression #3 of SELECT list is not in GROUP BY clause and contains nonaggregated columOC] 看了網上的很多的方法,有改配置文件的,有在navicat寫執行語句的,我甚至還嘗試重裝了mysql,自己添加my.cnf那些配置文件,都解決不了呢。怪自己沒有好好學數據庫聚合函數的知識,就來說一種情況吧。
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