Sql Oracle缺少括号错误
这是我的问题Sql Oracle缺少括号错误,sql,oracle,parentheses,Sql,Oracle,Parentheses,这是我的问题 SELECT S.sid, S.sname, M.major FROM Student S, Major M WHERE NOT EXISTS( (SELECT C.cno FROM Courses C WHERE S.sid = M.sid AND M.dname = C.dname) E
SELECT S.sid,
S.sname,
M.major
FROM Student S,
Major M
WHERE NOT EXISTS(
(SELECT C.cno
FROM Courses C
WHERE S.sid = M.sid
AND M.dname = C.dname) EXCEPT
(SELECT E.cno
FROM Enroll E
WHERE S.sid = M.sid
AND S.sid = E.sid
AND M.dname=E.dname))
为什么我得到一个无效的SQL:ORA-00907:在它们排列时缺少右括号错误?
除外
是一个SQLServer子句,在oracle中,减号用于相同的:
试试这个:
SELECT S.sid,
S.sname,
M.major
FROM Student S,
Major M
WHERE NOT EXISTS(
(SELECT C.cno FROM Courses C WHERE S.sid = M.sid AND M.dname = C.dname
)
MINUS
(SELECT E.cno
FROM Enroll E
WHERE S.sid = M.sid
AND s.sid = e.sid
and m.dname=e.dname
));
除了这个意义上的
?如果我猜对了,你可以用减号子句