题解 | #计算男生人数以及平均GPA#
计算男生人数以及平均GPA
https://www.nowcoder.com/practice/7d9a7b2d6b4241dbb5e5066d7549ca01
select count(case when gender='male' then gender else null end) as male_num, round(avg(case when gender='male' then gpa else null end),1) as avg_gpa from user_profile
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