“Score"表包含三列:Name, Course, Score, 即人名和课程都是可重复的
如何提取数学分数大于语文分数的学生成绩记录?
试了join, 但是结果是6列,也就是增加了列数,我希望列数不变
(SELECT *
FROM SCORE
WHERE course = "数学") a
JOIN
(SELECT *
FROM SCORE
WHERE course = "语文") b
ON a.name = b.name AND a.score > b.score
谢谢指教
“Score"表包含三列:Name, Course, Score, 即人名和课程都是可重复的
如何提取数学分数大于语文分数的学生成绩记录?
试了join, 但是结果是6列,也就是增加了列数,我希望列数不变
(SELECT *
FROM SCORE
WHERE course = "数学") a
JOIN
(SELECT *
FROM SCORE
WHERE course = "语文") b
ON a.name = b.name AND a.score > b.score
谢谢指教
SELECT * FROM score WHERE name in (
SELECT a.name FROM
(SELECT *
FROM SCORE
WHERE course = "数学") a
JOIN
(SELECT *
FROM SCORE
WHERE course = "语文") b
ON a.name = b.name AND a.score > b.score
)