MySQL query to get sum of each column where every column has same number of values?

You can use aggregate function SUM() for this. Let us first create a table −

mysql> create table DemoTable    (    Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,    FirstValue int,    SecondValue int,    ThirdValue int    ); Query OK, 0 rows affected (0.57 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable(FirstValue,SecondValue,ThirdValue) values(10,20,30); Query OK, 1 row affected (0.22 sec) mysql> insert into DemoTable(FirstValue,SecondValue,ThirdValue) values(60,50,40); Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable(FirstValue,SecondValue,ThirdValue) values(80,90,100); Query OK, 1 row affected (0.23 sec) mysql> insert into DemoTable(FirstValue,SecondValue,ThirdValue) values(20,10,0); Query OK, 1 row affected (0.23 sec)

Following is the query to display all records from the table using select statement −

mysql> select *from DemoTable;

This will produce the following output −

+----+------------+-------------+------------+ | Id | FirstValue | SecondValue | ThirdValue | +----+------------+-------------+------------+ | 1 | 10 | 20 | 30 | | 2 | 60 | 50 | 40 | | 3 | 80 | 90 | 100 | | 4 | 20 | 10 | 0 | +----+------------+-------------+------------+ 4 rows in set (0.00 sec)

Here is the query to get the sum of each column where every column has same count of values −

mysql> select sum(FirstValue),sum(SecondValue),sum(ThirdValue) from DemoTable;

This will produce the following output −

+-----------------+------------------+-----------------+ | sum(FirstValue) | sum(SecondValue) | sum(ThirdValue) | +-----------------+------------------+-----------------+ | 170 | 170 | 170 | +-----------------+------------------+-----------------+ 1 row in set (0.00 sec)