SQL Exercises: Make a list in ascending order for the customer who works either through a salesman or by own

SQL JOINS: Exercise-8 with Solution

From the following tables write a SQL query to display the customer name, customer city, grade, salesman, salesman city. The results should be sorted by ascending customer_id.

Sample table: customer

Sample table: salesman

Sample Solution:

SELECT a.cust_name,a.city,a.grade, 
b.name AS "Salesman",b.city 
FROM customer a 
LEFT JOIN salesman b 
ON a.salesman_id=b.salesman_id 
order by a.customer_id;

Output of the Query:

cust_name	city		grade	Salesman	city
Brad Guzan	London			Pit Alex	London
Nick Rimando	New York	100	James Hoog	New York
Jozy Altidor	Moscow		200	Paul Adam	Rome
Fabian Johnson	Paris		300	Mc Lyon		Paris
Graham Zusi	California	200	Nail Knite	Paris
Brad Davis	New York	200	James Hoog	New York
Julian Green	London		300	Nail Knite	Paris
Geoff Cameron	Berlin		100	Lauson Hen	San Jose

Explanation:

Pictorial presentation :

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Query Visualization:

Duration:

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Previous: 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.
Next: From the following tables write a SQL query to find those customers whose grade less than 300. Return cust_name, customer city, grade, Salesman, saleman city. The result should be ordered by ascending customer_id.