Consider the following table structures related to a university for the below question.
EMPLOYEE
NAME VARCHAR (30) NOT NULL,
EID VARCHAR (10) NOT NULL,
DEPTNO INT (5) NOT NULL,
HODEID VARCHAR (10),
SALARY INT (10),
PRIMARY KEY (EID),
FOREIGN KEY (HODEID) REFERENCES EMPLOYEE (EID),
FOREIGN KEY (DEPTNO) REFERENCES DEPARTMENT (DID);
DEPARTMENT
DID INT (5) NOT NULL,
DNAME VARCHAR(30) NOT NULL,
HODID VARCHAR (10) NOT NULL,
HODNAME VARCHAR (30),
PRIMARY KEY (DID),
UNIQUE (DNAME),
FOREIGN KEY (HODID) REFERENCES EMPLOYEE (EID)
PROJECT WORK:
EMPID VARCHAR (10) NOTNULL,
PROJNO INT(5) NOT NULL,
PROJECTLOC VARCHAR (30) NOT NULL,
PRIMARY KEY (EMPID, PROJNO),
FOREIGN KEY (EMPID) REFERENCES EMPLOYEE (EID),
Which of the following query/queries return the employee ID and name of employees whose salary is greater than the salary of all employees in department number $20$ of university. Order result by employee ID (refer table structures given above).
-
SELECT EID, NAME
FROM EMPLOYEE
WHERE SALARY>(SELECT SALARY FROM EMPLOYEE WHERE DEPTNO=20)
ORDER BY EID
-
SELECT EID, NAME
FROM EMPLOYEE
WHERE SALARY>(SELECT SALARY FROM EMPLOYEE WHERE DEPTNO=20);
-
SELECT EID, NAME
FROM EMPLOYEE
WHERE SALARY > ALL(SELECT SALARY FROM EMPLOYEE WHERE DEPTNO=20)
ORDER BY EID
Choose the correct answer from the options given below:
- $i$ and $ii$ only
- $i$ and $iii$ only
- $ii$ only
- $iii$ only