Mysql8.0.16 only_full_group_by

【1】Mysql8.0.16 关于only_full_group_by问题

应公司业务的需求，安装了Mysql8.0.16版本，原来在Mysql5.6版本执行无恙的SQL语句：

SELECT product_id, call_type,
SUM(service_fee) AS un_total_fee,
SUM(duration) AS total_duration,
COUNT(*) AS total_times, source,
SUM(np_fee) AS np_total_fee,
NOW() AS current
FROM view_dat_sdr_201903
 )
 )
GROUP BY call_type;

在新的服务器上跑出了这个错误：

error : Expression #6 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'billing.view_dat_sdr_201903.source' which is not functily dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by

经查询，默认开启了only_full_group_by选项。

【2】解决方案

想办法关闭该选项即可。

注意：Mysql8.0.16版本有个现象：

session sql_mode的值是空

SHOW VARIABLES LIKE '%sql_mode%'; 

即利用如上SQL命令查询的sql_mode值为空。

但是 global sql_mode的值非空。利用如下SQL命令查询：

SHOW GLOBAL VARIABLES LIKE '%sql_mode%'; 

sql_mode值如下：

ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION

重置global sql_mode的值：

SET GLOBAL sql_mode = 'STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION';

Good Good Study, Day Day Up.

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