ERROR 1055 (42000)

ERROR 1055 (42000): Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'test.fruits.f_id' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by

ERROR 1055 (42000): Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated ......问题报错解决办法！

 

执行sql语句报错：

ERROR 1055 (42000): Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'test.fruits.f_id' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by

（错误1055（42000）：选择列表的表达式1不在GROUP BY子句中，并且包含未聚合的列“test.fruits.f_id”，它在功能上不依赖GROUP BY子句中的列；这与SQL_mode=only_full_group_by不兼容）

解决办法：

在mysql中输入

mysql> set sql_mode ='STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION';

再次从新查询就OK了！

以上是在网上找到的解决方案！可是我并没有理解是什么原理！

有哪位懂的，请指教，共同讨论！