#学校为山东大学或性别为男:university = '山东大学' or gender = '男' #先输出山东大学:order by university #拼接表:union all with a as (select device_id,gender,age,gpa from user_profile where university = '山东大学'), b as (select device_id,gender,age,gpa from user_profile where gender = 'male') select * fr...