查询平均成绩大于90分的同学的学号:Select sno from SC Group by sno _ AVG(Grade)>90.请选出空白处的正确选项( )。A.IN
若要求“查询选修了3门以上课程的学生的学生号”,正确的SQL语句是 A. SELECT Sno FROM SC GROUP BY Sno HAVING COUNT(*)>
下列查询语句中,错误是( ) A. SELECT Sno, COUNT(*) FROM SC GROUP BY Sno B. SELECT Sno FROM SC
在下列SQL语句中,正确的是( )。 A. SELECT Sno,SName FROM SC GROUP BY Sno; B. SELECT Sno FROM SC GROUP BY Sno HAVING COUNT(*)>3; C. SELECT Sno FROM SC GROUP BY Sno WHERE COUNT(*)>3; D. SELECT Sno FROM SC ORDER BY Sno HAVING COUNI(*)>3; ...
SELECT sno, count(*) FROM sc GROUP BY sno的意思是: A. 查询每个课程的选课人数 B. 查询每个学生的选课数目 C. 查询选课表SC中每个学生的学号和选课数目 D. 以上都不对 相关知识点: 试题来源: 解析 C.查询选课表SC中每个学生的学号和选课数目 解析: 反馈 收藏 ...
A. SELECT Sno, COUNT(*) FROM SC GROUP BY Sno B. SELECT Sno FROM SC GROUP BY Sno WHERE COUNT(*)> 3 C. SELECT Sno FROM SC GROUP BY Sno HAVING COUNT(*)> 3 D. SELECT Sno FROM SC GROUP BY Sno ...
找出平均分在90分以上,并且没有一门课程成绩在80分以下的学生的学号。 Select sno From sc Group by sno Having min(grade)>80 and avg(grade)>90相关知识点: 试题来源: 解析 找出男女学生各有多少人。 Select ssex, count(sid) From stud Group by ssex ...
百度试题 题目SELECT sno, count(*) FROM sc GROUP BY sno的意思是() 相关知识点: 试题来源: 解析 查询选课表SC中每个学生的学号和选课数目 反馈 收藏
刷刷题APP(shuashuati.com)是专业的大学生刷题搜题拍题答疑工具,刷刷题提供查询平均成绩大于90分的同学的学号:Select sno from SC Group by sno ___ AVG(Grade)>90.请选出空白处的正确选项( )。A.INB.HAVINGC.ORDER BYD.WHERE的答案解析,刷刷题为用户提供专业的考试
查询语句中,错误的是( )。A.SELECT Sno, COUNT(*) FROM SC GROUP BY SnoB.SELECT Sno FROM SC GROUP B