22 lines
1.2 KiB
SQL
22 lines
1.2 KiB
SQL
-- Question 1
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SELECT S.snum, S.sname, D.dname FROM Student S, Department D WHERE S.deptid = D.deptid AND S.snum NOT IN (SELECT E.snum FROM Enrolled E WHERE E.grade = 'A');
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-- SELECT F.fname FROM Faculty F, Class C WHERE C.fid = F.fid HAVING COUNT(*) >= 2;
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-- SELECT C1.fid from Class C1, Class C2 WHERE C1.fid = c2.fid AND C1.room = C2.room AND C1.cname <> C2.cname;
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-- Question 2
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SELECT DISTINCT(F.fname) from Faculty F, Class C1, Class C2 WHERE C1.fid = c2.fid AND C1.room = C2.room AND C1.cname <> C2.cname;
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-- SELECT DISTINCT(F.fname), COUNT(*) AS cnt from Faculty F, Class C WHERE C.fid = c2.fid AND C1.room = C2.room AND C1.cname <> C2.cname WHERE cnt >= 2;
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-- SELECT F.fname FROM Faculty F WHERE EXISTS (SELECT F.fid FROM Faculty F, Class C inner join Class C on F.fid = C.fid);
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-- SELECT DISTINCT F.fid, F.fname, F.deptid FROM Faculty F inner join Class C on F.fid = C.fid;
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-- SELECT S.snum FROM Student S WHERE NOT EXISTS (SELECT F.deptid FROM Faculty F, Class C WHERE F.fid = C.fid);
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-- Question 3
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SELECT S.snum FROM Student S WHERE NOT EXISTS (SELECT DISTINCT F.fid, F.fname, F.deptid FROM Faculty F inner join Class C on F.fid = C.fid AND S.deptid = F.deptid);
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