解决MySQL 5.7.9版本sql_mode=only_full_group_by问题

mysql 5.7.9版本sql_mode=only_full_group_by问题

用到group by 语句查询时com.mysql.jdbc.exceptions.jdbc4.mysqlsyntaxerrorexception: expression #2 of select list is not in group by clause and contains nonaggregated column 'col_user_6.a.start_time' which is not functionally dependent on columns in group by clause; this is incompatible with sql_mode=only_full_group_by错误

解决方法 ：

执行set global sql_mode = ''; 把sql_mode 改成非only_full_group_by模式。

验证是否生效 select @@global.sql_mode 或 select @@sql_mode

set sql_mode ='strict_trans_tables,no_zero_in_date,no_zero_date,error_for_division_by_zero,no_auto_create_user,no_engi

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