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which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mod

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简介which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mod

mysql升级到5.7之后,使用之前的分组查询语句报错

which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by

原因是5.7默认设置了

sql_mode=only_full_group_by
only_full_group_by :使用这个就使用和oracle一样的group 规则, select的列都要在group中,或本身是聚合列(SUM,AVG,MAX,MIN) 才行。

因为selece的列不在group中,所以报错。

解决办法如下:

方案一:在mysql的ini配置文件的[mysqld]下面添加

sql_mode=STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,

NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION

注意“=”后面的字符串不能有空格,逗号(“,”)后面也不能有,不然会报错,mysql也启动不了

方案二:链接数据库,执行sql:

(1)先查询 @@GLOBAL.sql_mode 执行语句,查看查询结果值;

查询sql语句:select @@GLOBAL.sql_mode;

(2)设置新的值,sql语句:

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'

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