A table named student is given below. Roll No. - 1,2,3,4,5,6,7 NAME - Hari, Binu, Saritha, Vimala, Sindu, Biju, Vinod

Question

A table named student is given below.

Roll No	Name	Batch	Percent
1	Hari	Commerce	80
2	Binu	Science	85
3	Saritha	Bumanities
4	Vimala	Science	90
5	Sindu	Science	75
6	Biju	Commerce	77
7	Vinod	Humanities

Write answers for the questions based on the above table. 

1. SQL statement to display the different courses available without duplication.

2. SQL statement to display the Name and Batch of the students whose percentage has a null value.

3. Output of the query select count (percentage) from Student.

Answer 1

1. Select distinct batch from Student; 

2. Select name, batch from Student where percent is null 

3. 5