mysql比较简单,group_concat函数就能搞定。 SELECT acc.id,acc.acc_username,acc.acc_showname,GROUP_CONCAT(T_PM_ROLE.role_name) FROM T_ACCOUNT acc,T_ACCOUNT_R_ROLE accRole ,T_PM_ROLE WHERE acc.is_active =1 AND (accRole.is_active =1 AND acc.id = accRole.acc_id) AND accRole.role_id =...