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MySQL query to find sum of fields with same column value?
Use GROUP BY clause for this. Let us first create a table −
mysql> create table sumOfFieldsDemo -> ( -> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> ClientSerialNumber varchar(100), -> ClientCost int -> ); Query OK, 0 rows affected (0.50 sec)
Following is the query to insert some records in the table using insert command −
mysql> insert into sumOfFieldsDemo(ClientSerialNumber,ClientCost) values('1111',450);
Query OK, 1 row affected (0.16 sec)
mysql> insert into sumOfFieldsDemo(ClientSerialNumber,ClientCost) values('2222',550);
Query OK, 1 row affected (0.15 sec)
mysql> insert into sumOfFieldsDemo(ClientSerialNumber,ClientCost) values('3333',150);
Query OK, 1 row affected (0.64 sec)
mysql> insert into sumOfFieldsDemo(ClientSerialNumber,ClientCost) values('3333',250);
Query OK, 1 row affected (0.12 sec)
mysql> insert into sumOfFieldsDemo(ClientSerialNumber,ClientCost) values('2222',1000);
Query OK, 1 row affected (0.10 sec)
mysql> insert into sumOfFieldsDemo(ClientSerialNumber,ClientCost) values('1111',1000);
Query OK, 1 row affected (0.16 sec)
mysql> insert into sumOfFieldsDemo(ClientSerialNumber,ClientCost) values('1111',500);
Query OK, 1 row affected (0.17 sec)
mysql> insert into sumOfFieldsDemo(ClientSerialNumber,ClientCost) values('4444',100);
Query OK, 1 row affected (0.17 sec)Following is the query to display all records from the table using select statement −
mysql> select * from sumOfFieldsDemo;
This will produce the following output −
+----+--------------------+------------+ | Id | ClientSerialNumber | ClientCost | +----+--------------------+------------+ | 1 | 1111 | 450 | | 2 | 2222 | 550 | | 3 | 3333 | 150 | | 4 | 3333 | 250 | | 5 | 2222 | 1000 | | 6 | 1111 | 1000 | | 7 | 1111 | 500 | | 8 | 4444 | 100 | +----+--------------------+------------+ 8 rows in set (0.00 sec)
Here is the query to find sum of fields with same column value −
mysql> select Id,ClientSerialNumber,SUM(ClientCost) AS TotalSum -> from sumOfFieldsDemo -> group by ClientSerialNumber;
This will produce the following output −
+----+--------------------+----------+ | Id | ClientSerialNumber | TotalSum | +----+--------------------+----------+ | 1 | 1111 | 1950 | | 2 | 2222 | 1550 | | 3 | 3333 | 400 | | 8 | 4444 | 100 | +----+--------------------+----------+ 4 rows in set (0.00 sec)
Updated on: 30-Jul-2019
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