ALL sql operator

Question

How to use ALL operator in SQL query. I need something like students who have passed in both maths and science. Please help.
Thanks.

Answer 1

SQL> CREATE TABLE STUDENT
2 (
3 SNAME VARCHAR2(6),
4 SNO CHAR(2)
5 );
Table created.
SQL> ALTER TABLE STUDENT ADD (
2 CONSTRAINT SNO_PK PRIMARY KEY (SNO));
Table altered.
SQL> INSERT INTO STUDENT(SNAME,SNO) VALUES('L Tree','S1')
2 ;
1 row created.
SQL> INSERT INTO STUDENT(SNAME,SNO) VALUES('D Pond','S2');
1 row created.
SQL> INSERT INTO STUDENT(SNAME,SNO) VALUES('M Lake','S3');
1 row created.
SQL> INSERT INTO STUDENT(SNAME,SNO) VALUES('J Bond','S4');
1 row created.
SQL> INSERT INTO STUDENT(SNAME,SNO) VALUES('S Bark', 'S5');
1 row created.
SQL> INSERT INTO STUDENT(SNAME,SNO) VALUES('L Leaf','S6');
1 row created.
SQL> CREATE TABLE COURSE
2 (
3 CNAME VARCHAR2(6),
4 CNO CHAR(2)
5 );
Table created.
SQL> ALTER TABLE COURSE ADD (
2 CONSTRAINT CNO_PK PRIMARY KEY (CNO));
Table altered.
SQL> INSERT INTO COURSE(CNAME,CNO) VALUES('Comp 1','C1')
2 ;
1 row created.
SQL> INSERT INTO COURSE(CNAME,CNO) VALUES('Math 2','C2');
1 row created.
SQL> INSERT INTO COURSE(CNAME,CNO) VALUES('Phys 3','C3');
1 row created.
SQL> INSERT INTO COURSE(CNAME,CNO) VALUES('Comp 3','C4');
1 row created.
SQL> CREATE TABLE RESULT
2 (
3 SNO CHAR(2),
4 CNO CHAR(2),
5 MARK INTEGER
6 );
Table created.
SQL> ALTER TABLE RESULT ADD (
2 CONSTRAINT CNO_FK FOREIGN KEY (CNO)
3 REFERENCES COURSE (CNO));
Table altered.
SQL> ALTER TABLE RESULT ADD (
2 CONSTRAINT SNO_FK FOREIGN KEY (SNO)
3 REFERENCES STUDENT (SNO));
Table altered.
SQL> INSERT INTO RESULT(SNO,CNO,MARK) VALUES('S1','C1',77)
2 ;
1 row created.
SQL> INSERT INTO RESULT(SNO,CNO,MARK) VALUES('S1','C2',80);
1 row created.
SQL> INSERT INTO RESULT(SNO,CNO,MARK) VALUES('S2','C2',93);
1 row created.
SQL> INSERT INTO RESULT(SNO,CNO,MARK) VALUES('S2','C3',88);
1 row created.
SQL> INSERT INTO RESULT(SNO,CNO,MARK) VALUES('S2','C4',91);
1 row created.
SQL> INSERT INTO RESULT(SNO,CNO,MARK) VALUES('S3','C2',74);
1 row created.
SQL> INSERT INTO RESULT(SNO,CNO,MARK) VALUES('S3','C3',89);
1 row created.
SQL> INSERT INTO RESULT(SNO,CNO,MARK) VALUES('S4','C2',75);
1 row created.
SQL> INSERT INTO RESULT(SNO,CNO,MARK) VALUES('S4','C3',85);
1 row created.
SQL> INSERT INTO RESULT(SNO,CNO,MARK) VALUES('S4','C4',55);
1 row created.
SQL> INSERT INTO RESULT(SNO,CNO,MARK) VALUES('S5','C1',50);
1 row created.
SQL> INSERT INTO RESULT(SNO,CNO,MARK) VALUES('S5','C4',61);
1 row created.
SQL> INSERT INTO RESULT(SNO,CNO,MARK) VALUES('S6','C2',77);
1 row created.
SQL> INSERT INTO RESULT(SNO,CNO,MARK) VALUES('S6','C3',88);
1 row created.
SQL> INSERT INTO RESULT(SNO,CNO,MARK) VALUES('S6','C4',54);
1 row created.
SQL> commit;
Commit complete.With the above, I need to find
1. Names of students who have passed ALL courses that J Bond passed (this should give students who have passed both in C2 and C3)
2. Names of students who have got better mark than J Bond in ALL courses that J Bond recevied marks
3. Passmark is >= 60
BTW how do i post sql codes in different text
Thanks.