MySQL SUM()

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The SUM() function returns the total sum of a numeric column


SELECT SUM(column_name)
FROM table_name
WHERE condition;

Let's put these statements into real use.

We've a table named Students in our database that contains the following records:

Now lets calculate the sum of record from Students table.



SELECT SUM(ROLL_NO)
FROM Students;

The above SELECT statement calculate the sum of record of ROLL_NO.

SUM(ROLL_NO)
21

We can calculate the sum of record with where condition.


SELECT SUM(ROLL_NO)
FROM Students;
WHERE SUBJECT='JAVA'

The above SELECT statement calculate the sum of record SUBJECT is 'JAVA'.

SUM(ROLL_NO)
11

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MySQL - SUM()