你可能感兴趣的试题
(学号,姓名) (学号) (学号,班号) (学号,宿舍号)
SUM(成绩) AVG(SUM(成绩)) AVG(成绩)AT平均成绩 AVG(成绩)AS平均成绩
SUM(成绩) AVG(SUM(成绩)) AVG(成绩) AT 平均成绩 AVG(成绩) AS 平均成绩
COUNT(DISTINCT学号)>3 COUNT(课程号)>3 COUNT(DISTINCT学号)≥3 COUNT(课程号)≥3
COUNT(DISTINCT学号)>3 COUNT(课程号)>=3 COUNT(DISTINCT学号)>=3 COUNT(课程号)>3
COUNT(DISTINCT 学号)>3 COUNT(课程号)>3 COUNT(DISTINCT 学号)>=3 COUNT(课程号)>=3
COUNT(DISTINCT 学号)>3 COUNT(课程号)>3 COUNT(DISTINCT 学号)>= 3 COUNT(课程号)>= 3
COUNT(DISTINCT 学号)>3 COUNT(课程号)>3 COUNT(DISTINCT 学号)>=3 COUNT(课程号)>=3
SELECT s.学号,姓名,课程名,成绩
FROM student s,score sc。course c
WHERE s.学号=sc.学号,sc.课程号=c.课程号,院系="计算机系" SELECT学号,姓名,课程名,成绩
FROM student s,score sc,course C
WHERE s.学号=S学号AND sc.课程号=c.课程号AND院系="计算机系" SELECT s.学号,姓名,课程名,成绩
FROM(student s JOIN score sc ON s.学号=sc.学号)
JOIN course c ON sc.课程号=c.课程号
wHERE院系="计算机系" SELECT学号,姓名,课程名,成绩
FROM(student s JOIN score sc ON s.学号=sc.学号)
JOIN course c ON sc.课程号=c.课程号
WHERE院系="计算机系"
SELECT s.学号,姓名,课程名,成绩
FROM student s,score sc,course c
WHERE s.学号=sc.学号,sc.课程号=c.课程号,院系=’计算机系’ SELECT学号,姓名,课程名,成绩
FROM student s,score sc,course c
WHERE s.学号=sc.学号AND sc.课程号=c.课程号AND院系=’计算机系’ SELECT s.学号,姓名,课程名,成绩
FROM(student s JOIN score se ON s.学号=sc.学号)
JOIN course c ON sc.课程号=c.课程号
WHERE院系=’计算机系’ SELECT学号,姓名,课程名,成绩
FROM(student s JOIN score sc ON s.学号=sc.学号)
JOIN course c ON sc.课程号=c.课程号
WHERE院系=’计算机系’
COUNT(DISTINCT 学号)>3 COUNT(课程号)>3 COUNT(DISTINCT 学号)>=3 COUNT(课程号)>=3
COUNT(DISTINCT学号)>3 COUNT(课程号)>3 COUNT(DISTINCT学号)>=3 COUNT(课程号)>=3