题解 | #计算男生人数以及平均GPA#
计算男生人数以及平均GPA
http://www.nowcoder.com/practice/7d9a7b2d6b4241dbb5e5066d7549ca01
使用count计算数量,使用avg函数计算平均值,使用round函数保留小数位数为1
SELECT COUNT(gender) as male_num,ROUND(AVG(gpa),1) as avg_gpa from user_profile where gender='male';
计算男生人数以及平均GPA
http://www.nowcoder.com/practice/7d9a7b2d6b4241dbb5e5066d7549ca01
SELECT COUNT(gender) as male_num,ROUND(AVG(gpa),1) as avg_gpa from user_profile where gender='male';
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