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使用DISTINCT語句報錯時:
Expression #1 of ORDER BY clause is not in SELECT list, references column '' 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
解決方案:
通過修改mysql的配置文件my.ini,關閉ONLY_FULL_GROUP_BY SQL模式
文件底部追加:
sql_mode=STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION