Multiple choice technology databases

The user issues the following statement. What will be displayed if the EMPID selected is 60494? SELECT DECODE(empid,38475, “Terminated”,60494, “LOA”, “ACTIVE”) FROM emp;

  1. ACTIVE

  2. LOA

  3. TERMINATED

  4. 38475
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The DECODE function acts as a switch-case statement. Evaluating DECODE(empid, 38475, 'Terminated', 60494, 'LOA', 'ACTIVE') checks if empid is 38475, returning 'Terminated'. Since the ID is 60494, it matches the next pair and returns 'LOA'.

AI explanation

To answer this question, let's analyze the given SQL statement:

SELECT DECODE(empid,38475, "Terminated",60494, "LOA", "ACTIVE") FROM emp;

The DECODE function in SQL is used to compare an expression (in this case, empid) with a list of values and return a corresponding result.

In the given statement, the empid is compared to three values: 38475, 60494, and the default value "ACTIVE".

If the empid matches 38475, the result will be "Terminated". If the empid matches 60494, the result will be "LOA". If the empid does not match any of these values, the result will be "ACTIVE".

In this case, the empid selected is 60494. Therefore, the result of the statement will be "LOA".

So, the correct answer is B) LOA.

Keep practicing — related questions