MySQL query to fetch the maximum cumulative value

MySQLMySQLi Database

For this, use aggregate function COUNT(*) along with subquery. GROUP BY is also used.

Let us create a table −

mysql> create table demo23
−> (
−> id int not null auto_increment primary key,
−> value1 int,
−> value2 int
−> );
Query OK, 0 rows affected (1.65 sec)

Insert some records into the table with the help of insert command −

mysql> insert into demo23(value1,value2) values(5,600);
Query OK, 1 row affected (0.20 sec)

mysql> insert into demo23(value1,value2) values(20,800);
Query OK, 1 row affected (0.06 sec)

mysql> insert into demo23(value1,value2) values(7,400);
Query OK, 1 row affected (0.20 sec)

mysql> insert into demo23(value1,value2) values(6,500);
Query OK, 1 row affected (0.17 sec)

mysql> insert into demo23(value1,value2) values(10,300);
Query OK, 1 row affected (0.12 sec)

mysql> insert into demo23(value1,value2) values(11,500);
Query OK, 1 row affected (0.14 sec)

Display records from the table using select statement −

mysql> select *from demo23;

This will produce the following output −

+----+--------+--------+
| id | value1 | value2 |
+----+--------+--------+
| 1  | 5      | 600    |
| 2  | 20     | 800    |
| 3  | 7      | 400    |
| 4  | 6      | 500    |
| 5  | 10     | 300    |
| 6  | 11     | 500    |
+----+--------+--------+
6 rows in set (0.00 sec)

Following is the query for maximum cumulative −

mysql> select total_value, count(*) as number_of_occurrences
−> from (
−> select value1*value2 as total_value
−> from demo23
−> ) t
−> group by total_value
−> order by total_value desc
−> limit 1 ;

This will produce the following output −

+-------------+-----------------------+
| total_value | number_of_occurrences |
+-------------+-----------------------+
| 16000       |                     1 |
+-------------+-----------------------+
1 row in set (0.00 sec)
raja
Published on 19-Nov-2020 12:01:15
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