SQL Exercise: Salesman details by smallest ID along with order date
SQL Formatting Output: Exercise-7 with Solution
From the following table, write a SQL query that calculates the maximum purchase amount generated by each salesperson for each order date. Sort the result-set by salesperson id and order date in ascending order. Return salesperson id, order date and maximum purchase amount.
Sample table: orders
Sample Solution :
SELECT salesman_id,ord_date,MAX(purch_amt) FROM orders GROUP BY salesman_id,ord_date ORDER BY salesman_id,ord_date;
Output of the Query:
salesman_id ord_date max 5001 2012-04-25 3045.60 5001 2012-07-27 2400.60 5001 2012-09-10 5760.00 5001 2012-10-05 65.26 5002 2012-06-27 250.45 5002 2012-09-10 948.50 5002 2012-10-05 150.50 5003 2012-08-17 110.50 5003 2012-10-10 2480.40 5005 2012-09-10 270.65 5006 2012-10-10 1983.43 5007 2012-08-17 75.29
The said query in SQL retrieves data from the 'orders' table and returns the following columns:
The maximum value of the purch_amt column, calculated using the MAX function
A result of this query is grouped based on both the "salesman_id" and the "order_date" columns, as well as being sorted in ascending order based on the "salesman_id" and the "order_date" columns. The result of this query will give the maximum purchase amount for each combination of salesman_id and ord_date.
Relational Algebra Expression:
Relational Algebra Tree:
Visual presentation :
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Previous SQL Exercise: Display customer name, city, grade.
Next SQL Exercise: Display customer name, city and grade by highest grade.
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