Show All Rows with an Above-Average Value in MySQL
This article discusses how to identify rows in a dataset that have values exceeding the overall average of the dataset in MySQL. It explains two different methods using subqueries and joins operations that can be used to accomplish this task. These methods can be very useful for analyzing data and making informed decisions based on the results.
- Subquery with Average Calculation
- Using JOIN with Subquery
To create a table that matches the structure of the data provided (id, product_name, revenue), you can use the following SQL query:
CREATE TABLE products (
id INT PRIMARY KEY,
product_name VARCHAR(255),
revenue DECIMAL(10, 2)
);
INSERT INTO products (id, product_name, revenue)
VALUES
(1, 'Product A', 1500.50),
(2, 'Product B', 2200.75),
(3, 'Product C', 1800.25),
(4, 'Product D', 2500.00),
(5, 'Product E', 1900.00),
(6, 'Product F', 2100.50);
products table:
+----+-------------+---------+
| id | product_name| revenue |
+----+-------------+---------+
| 1 | Product A | 1500.50 |
| 2 | Product B | 2200.75 |
| 3 | Product C | 1800.25 |
| 4 | Product D | 2500.00 |
| 5 | Product E | 1900.00 |
| 6 | Product F | 2100.50 |
+----+-------------+---------+
Show All Rows with an Above-Average Value in MySQL
Finding All Rows with an Above-Average Value in MySQL is easy because in this article we will learn some methods to identify rows in a dataset where values exceed the dataset’s average.
Using MySQL we will discuss two approaches using subqueries with average calculations and through JOIN operations with subqueries. We’ll implement the method with the help of understanding examples and so on.