MYSQL adding columns value of rows

I have a problem in which I have a STUDENT table as

+-------------+-------------+-------------+-------------+---------------+
| roll_number | name        | subject_one | subject_two | subject_three |
+-------------+-------------+-------------+-------------+---------------+
|           1 |  Sheila     |          32 |          48 |            64 |
|           2 | Rachel      |          24 |          21 |            25 |
|           3 | Christopher |          55 |          12 |            10 |
+-------------+-------------+-------------+-------------+---------------+

I want the print the output as

+-------------+-------------+-------------+
| roll_number | name        | total       | 
+-------------+-------------+-------------+
|           1 |  Sheila     |          144|
|           2 | Rachel      |          70 |     
|           3 | Christopher |          77 |
+-------------+-------------+-------------+

and select all student having marks greater than 75 ??
How can I achieve this using MYSQL ??

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Answers:

Method 1

Answers:

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Method 1

I think you just need the aggregate functions and using them is enough. I am not sure if it can help you or not.

SELECT roll_number , name , (subject_one + subject_two + subject_three) AS total FROM STUDENT HAVING total > 75 ;

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