从学校表中获取非匹配记录（突出显示）

Question

我想从表格＆＃39;学校＆＃39;中获取突出显示的记录。其主题不在Tution中。尝试左连接由于某种原因出错了。请有人帮忙吗。我正在使用sql server。

Answer 1

SELECT Student, Subject, Marks FROM School
EXCEPT
SELECT Student, Subject, Marks FROM Tution

Answer 2

尝试该查询：

SELECT * 
FROM TUTION  
WHERE MARKS NOT IN
(SELECT MARKS FROM SCHOOL WHERE MARKS IN(90,70) AND STUDENT NOT IN('PETER',JOHN'))