Write a SQL statement to make a join on the tables salesman, customer and orders in such a form that the same column of each table

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Write a SQL statement to make a join on the tables salesman, customer and orders in such a form that the same column of each table will appear once and only the relational rows will come.

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
customer_id |   cust_name    |    city    | grade | salesman_id 
-------------+----------------+------------+-------+-------------
        3002 | Nick Rimando   | New York   |   100 |        5001
        3007 | Brad Davis     | New York   |   200 |        5001
        3005 | Graham Zusi    | California |   200 |        5002
        3008 | Julian Green   | London     |   300 |        5002
        3004 | Fabian Johnson | Paris      |   300 |        5006
        3009 | Geoff Cameron  | Berlin     |   100 |        5003
        3003 | Jozy Altidor   | Moscow     |   200 |        5007
        3001 | Brad Guzan     | London     |       |        5005
 salesman_id |    name    |   city   | commission 
-------------+------------+----------+------------
        5001 | James Hoog | New York |       0.15
        5002 | Nail Knite | Paris    |       0.13
        5005 | Pit Alex   | London   |       0.11
        5006 | Mc Lyon    | Paris    |       0.14
        5007 | Paul Adam  | Rome     |       0.13
        5003 | Lauson Hen | San Jose |       0.12

الأجوبة

SELECT * 
FROM orders 
NATURAL JOIN customer  
NATURAL JOIN salesman;

Output of the Query:

salesman_id	city		customer_id	ord_no	purch_amt	ord_date	cust_name	grade	name		commission
5005		London		3001		70009	270.65		2012-09-10	Brad Guzan		Pit Alex	0.11
5001		New York	3002		70002	65.26		2012-10-05	Nick Rimando	100	James Hoog	0.15
5001		New York	3007		70005	2400.60		2012-07-27	Brad Davis	200	James Hoog	0.15
5001		New York	3002		70008	5760.00		2012-09-10	Nick Rimando	100	James Hoog	0.15
5006		Paris		3004		70010	1983.43		2012-10-10	Fabian Johnson	300	Mc Lyon		0.14
5001		New York	3002		70013	3045.60		2012-04-25	Nick Rimando	100	James Hoog	0.15
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أسئلة مشابهة

Write a SQL statement to make a report with customer name, city, order number, order date, order amount salesman name and commission
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