SQL Exercises: Find the highest purchase amount from the customers whose IDs fall within a range

SQL Aggregate Functions: Exercise-15 with Solution

From the following table, write a SQL query to determine the maximum order amount for each customer. The customer ID should be in the range 3002 and 3007(Begin and end values are included.). Return customer id and maximum purchase amount.

Sample table: orders

Sample Solution:

SELECT customer_id,MAX(purch_amt) 
FROM orders 
WHERE customer_id BETWEEN 3002 and 3007 
GROUP BY customer_id;

Output of the Query:

customer_id	max
3002		5760.00
3007		2400.60
3004		1983.43
3003		75.29
3005		948.50

Relational Algebra Expression:

Relational Algebra Tree:

Explanation :

Pictorial presentation:

Practice Online

Query Visualization:

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Cost:

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Previous: From the following table, write a SQL query to find the maximum order (purchase) amount by the combination of each customer and order date. Filter the rows for maximum order (purchase) amount is either 2000, 3000, 5760, 6000. Return customer id, order date and maximum purchase amount.
Next: From the following table, write a SQL query to find the maximum order (purchase) amount for each customer. The customer ID should be in the range 3002 and 3007(Begin and end values are included.).Filter the rows for maximum order (purchase) amount is higher than 1000. Return customer id and maximum purchase amount.