11. Is there any error in the following query?
    

    SELECT emp_id, title, start_date, fname, fed_id
    FROM Employee
    ORDER BY 3, 4;
    

1. 1. No

   
   
   

   2. Depends

   
   
   

   3. Yes

   
   
   

   4. All of above

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   “ORDER BY” clause can be used with Place holders. Here “3” represent column “title” and “4” represent “fed_id”. Therefore it look like “ORDER BY title, fed_id”.

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12. Keyword “ASC” and “DESC” cannot be used without which clause in Mysql?
    

1. 1. SELECT

   
   
   

   2. HAVING

   
   
   

   3. GROUP BY

   
   
   

   4. ORDER BY

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   “ASC” or “DESC” are used to sort the result set in ascending or descending order therefore they cannot be used without “ORDER BY” clause.

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13. What is the significance of “ORDER BY emp_id DESC” in the given query?
    

    SELECT id, First_name, Last_name
    FROM Student
    ORDER BY id DESC;
    

1. 1. Data of id will be sorted in ascending order

   
   
   

   2. Data of id will be sorted in either ascending or descending order

   
   
   

   3. Data of id will be sorted in descending order

   
   
   

   4. All of above

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   Keyword “DESC” will sort the data in descending order.

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14. What is the significance of “ORDER BY emp_id ASC” in the given query?
    

    SELECT id, First_name, Last_name
    FROM Student
    ORDER BY id ASC;
    

1. 1. Data of id will be sorted in either ascending or descending order

   
   
   

   2. Data of id will be sorted in descending order

   
   
   

   3. Data of id will be sorted in ascending order

   
   
   

   4. All of above

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   Keyword “ASC” will sort the data in ascending order.

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15. If id contain the following set {9, 7, 6, 4, 3, 1, 2}, what will be the output on execution of the given query?
    

    SELECT id
    FROM Student
    ORDER BY id DESC;
    

1. 1. {1, 2, 3, 4, 6, 7 , 9}

   
   
   

   2. {2, 1, 3, 4, 6, 7, 9}

   
   
   

   3. {9, 7, 6, 4, 3, 1, 2}

   
   
   

   4. All of above

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   “DESC” clause sort the id in the descending order.

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