记录下mysql的一次语句运行错误操作， Expression #2 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'XXX' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by 解决方法:在mysql的my.ini配置文件中[mysqld]后面增加 一行 ``` sql\_mode=NO\_ENGINE\_SUBSTITUTION,STRICT\_TRANS\_TABLES ```