题解 | #查找山东大学或者性别为男生的信息#
查找山东大学或者性别为男生的信息
https://www.nowcoder.com/practice/979b1a5a16d44afaba5191b22152f64a
# select # device_id,gender,age,gpa # from user_profile # where university = '山东大学', # or gender = 'male' # where or 结果集是默认去重的,与题目不符合 select device_id,gender,age,gpa from user_profile where university = '山东大学' union all select device_id,gender,age,gpa from user_profile where gender = 'male'