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SQL exercises

SQL Subquery Exercises: Find all orders with order amounts which are on or above-average amounts for their customers

SQL SUBQUERY : Exercise-13 with Solution

13. Write a queries to find all orders with order amounts which are on or above-average amounts for their customers.

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
70009	270.65		2012-09-10	3001		5005
70005	2400.60		2012-07-27	3007		5001
70008	5760.00		2012-09-10	3002		5001
70010	1983.43		2012-10-10	3004		5006
70003	2480.40		2012-10-10	3009		5003
70011	75.29		2012-08-17	3003		5007
70013	3045.60		2012-04-25	3002		5001
70007	948.50		2012-09-10	3005		5002
70012	250.45		2012-06-27	3008		5002

Explanation:

SQL Subqueries: Find all orders with order amounts which are on or above-average amounts for their customers.

Practice Online


Inventory database model

Query Visualization:

Duration:

Query visualization of Find all orders with order amounts which are on or above-average amounts for their customers - Duration

Rows:

Query visualization of Find all orders with order amounts which are on or above-average amounts for their customers - Rows

Cost:

Query visualization of Find all orders with order amounts which are on or above-average amounts for their customers - Cost

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Previous: Write a query to find all orders with order amounts which are above-average amounts for their customers.
Next: Write a query to find the sums of the amounts from the orders table, grouped by date, eliminating all those dates where the sum was not at least 1000.00 above the maximum amount for that date.

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