From the following table, write a SQL query to find the maximum order (purchase) amount by each customer

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From the following table, write a SQL query to find the maximum order (purchase) amount by 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

ord_no      purch_amt   ord_date    customer_id  salesman_id
----------  ----------  ----------  -----------  -----------
70001       150.5       2012-10-05  3005         5002
70009       270.65      2012-09-10  3001         5005
70002       65.26       2012-10-05  3002         5001
70004       110.5       2012-08-17  3009         5003
70007       948.5       2012-09-10  3005         5002
70005       2400.6      2012-07-27  3007         5001
70008       5760        2012-09-10  3002         5001
70010       1983.43     2012-10-10  3004         5006
70003       2480.4      2012-10-10  3009         5003
70012       250.45      2012-06-27  3008         5002
70011       75.29       2012-08-17  3003         5007
70013       3045.6      2012-04-25  3002         5001

الأجوبة

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
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