SQL Subquery Exercises: Find all orders with order amounts which is above the average amount of the related customer

SQL SUBQUERY: Exercise-12 with Solution

12. From the following tables write a SQL query to find those orders, which are higher than the average amount of the orders. Return ord_no, purch_amt, ord_date, customer_id and salesman_id.

Sample table: Orders

Sample table: Customer

Sample Solution:

SELECT * 
FROM orders a
WHERE purch_amt >
    (SELECT AVG(purch_amt) FROM orders b 
     WHERE b.customer_id = a.customer_id);

Output of the Query:

ord_no	purch_amt	ord_date	customer_id	salesman_id
70008	5760.00		2012-09-10	3002		5001
70003	2480.40		2012-10-10	3009		5003
70013	3045.60		2012-04-25	3002		5001
70007	948.50		2012-09-10	3005		5002

Explanation:

Practice Online

Query Visualization:

Duration:

Rows:

Cost:

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Next: From the following tables, write a SQL query to find those orders, which are equal or higher than average amount of the orders. Return ord_no, purch_amt, ord_date, customer_id and salesman_id.