How to Sum Column Elements in MySQL Using the SUM() Function?

Querying MySQL to Sum Elements of a Column

With a MySQL database, you can efficiently compute sums of elements within specific columns across multiple rows. This can be useful in various data analysis scenarios, such as calculating subtotals or generating aggregate values.

To achieve this, you can leverage the SUM() aggregate function. For instance, consider the following table with three columns (A, B, and C):

A	B	C
2	2	2
4	4	4
6	7	8

Suppose you want to retrieve a single row containing the summed values of each column for all three rows in the table. To accomplish this, you would use the following query:

SELECT SUM(A), SUM(B), SUM(C) FROM mytable WHERE id IN (1, 2, 3);

This query will output a single row with the following values:

A	B	C
12	13	14

By utilizing the SUM() function, MySQL combines the individual elements in each column, providing the total sums as a result. This process allows you to easily extract cumulative values from your database, aiding in data analysis and reporting.

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