Get the sum of a column in all MySQL rows?

Use aggregate function SUM() to get the sum of a column in al rows. Let us first create a table −

mysql> create table DemoTable    (    Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, Amount int    ); Query OK, 0 rows affected (0.20 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable(Amount) values(50); Query OK, 1 row affected (0.07 sec) mysql> insert into DemoTable(Amount) values(60); Query OK, 1 row affected (0.04 sec) mysql> insert into DemoTable(Amount) values(70); Query OK, 1 row affected (0.10 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable;

This will produce the following output −

+----+--------+ | Id | Amount | +----+--------+ |  1 |     50 | |  2 |     60 | |  3 |     70 | +----+--------+ 3 rows in set (0.00 sec)

Following is the query to get the sum of all rows in MySQL.

mysql> select sum(Amount) from DemoTable;

This will produce the following output −

+-------------+ | sum(Amount) | +-------------+ |         180 | +-------------+ 1 row in set (0.00 sec)