Q:

From the following table, write a SQL query to find those customers who served by a salesperson

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From the following table, write a SQL query to find those customers who served by a salesperson and the salesperson works at the commission in the range 12% to 14% (Begin and end values are included.). Return cust_name AS "Customer", city AS "City".

Sample table: salesman

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

Sample table: customer

 

 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
 

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Sample Solution:

SELECT customer.cust_name AS "Customer",
customer.city AS "City",
salesman.name AS "Salesman",
salesman.commission
FROM customer,salesman
WHERE customer.salesman_id = salesman.salesman_id
AND salesman.commission
BETWEEN .12 AND .14;
Output of the query:
Customer	City		Salesman	commission
Graham Zusi	California	Nail Knite	0.13
Julian Green	London		Nail Knite	0.13
Fabian Johnson	Paris		Mc Lyon		0.14
Geoff Cameron	Berlin		Lauson Hen	0.12
Jozy Altidor	Moscow		Paul Adam	0.13

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