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

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)
Updated on: 2019-07-30T22:30:25+05:30

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