mysql解决方法 vim /etc/my.cnf [client]default-character-set=utf8 [mysqld]default-storage-engine=INNODBcharacter-set-server=utf8collation-server=utf8_general_ci 重启: service mysqld restartmysql>show variables like 'character_set_%'; tomcat解决方法 tomcat的 conf…
mysql使用group by 的时候报错,错误信息如下: 1055:ER_WRONG_FIELD_WITH_GROUP: Expression #2 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'lbparking.tradingrecord.pname' which is not functionally dependent on columns in GROUP BY clause;…