MySql遇到 [Err] 1055 - Expression #1 of ORDER BY clause is not in GROUP BY clause and contains nonaggr
阿新 • • 發佈:2018-11-04
MySql遇到 [Err] 1055 - Expression #1 of ORDER BY clause is not in GROUP BY clause and contains nonaggregated column ‘information_schema.PROFILING.SEQ’ which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by
- 在MySql中執行包含 group by 命令的語句時,報錯如下:
[Err] 1055 - Expression #1 of ORDER BY clause is not in GROUP BY clause and contains nonaggregated column 'information_schema.PROFILING.SEQ' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by
-
報錯的原因:
- MySQL 5.7.5及以上功能依賴檢測功能。如果啟用了ONLY_FULL_GROUP_BY SQL模式(預設情況下),MySQL將拒絕選擇列表,HAVING條件或ORDER BY列表的查詢引用在GROUP BY子句中既未命名的非集合列,也不在功能上依賴於它們
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解決方法就是修改sql-mode ,sql-mode是對sql語法支援的限制,具體過程如下:
- 在MySql命令列介面鍵入以下命令:
select @@global.sql_mode;
- 查詢出來的結果如下:
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
- 我們需要去掉ONLY_FULL_GROUP_BY,直接重置sql_mode的值,如下:
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’;
- 然後重啟一下MySql,問題解決~