mysql 1055错误
线上用的MySQL版本为5.7.11，线下用的5.6版本，发现将程序上线后，有些地方报这个错误
1055 - Expression #1 of ORDER BY clause is not in GROUP BY clause and contains nonaggregated column 'information_schema.PROFILING.SEQ' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by
ONLY_FULL_GROUP_BY：
对于GROUP BY聚合操作，若select中的列没有在group by中出现，那么这句SQL是不合法的。
解决办法下my.cnf中添加以下几行
sql_mode='STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION'
在sql_mode 中去掉only_full_group_by
然后重启MySQL Server即可。
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