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Question ID 7995

Examine this statement: SELECT student_id, gpa FROM student_grades WHERE gpa >&&value; You run the statement once, and when prompted you enter a value of 2.0. A report is produced. What happens when you run the statement a second time?

Option A

An error is returned

Option B

You are prompted to enter a new value.

Option C

A report is produced that matches the first report produced.

Option D

You are asked whether you want a new value or if you want to run the report based on the previous value.

Correct Answer C
Explanation Explanation/Reference: Explanation : use the double-ampersand if you want to reuse the variable value without prompting the user each time. Incorrect answer : A is not an error B && will not prompt user for second time D && will not ask the user for new value Refer : Introduction to Oracle9i : SQL, Oracle University Study Guide, 7-13


Question ID 7996

Which SQL statement returns a numeric value?

Option A

SELECT ADD_MONTHS(MAX(hire_Date), 6) FROM EMP;

Option B

SELECT ROUND(hire_date) FROM EMP;

Option C

SELECT sysdate-hire_date FROM EMP;

Option D

SELECT TO_NUMBER(hire_date + 7) FROM EMP;

Correct Answer C
Explanation Explanation/Reference: Explanation : DATE value subtract DATE value will return numeric value. Incorrect answer : A does not return numeric value B does not return numeric value D does not return numeric value Refer : Introduction to Oracle9i : SQL, Oracle University Study Guide, 9-13

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