SQL Exercises: Salesmen commission with the percent sign (%)

SQL Formatting Output: Exercise-1 with Solution

From the following table, write a SQL query to select all the salespeople. Return salesman_id, name, city, commission with the percent sign (%).

Sample table: salesman

Sample Solution:

SELECT salesman_id,name,city,'%',commission*100 
FROM salesman;

Output of the Query:

salesman_id	name		city		?column?	?column?
5001		James Hoog	New York	%		15.00
5002		Nail Knite	Paris		%		13.00
5005		Pit Alex	London		%		11.00
5006		Mc Lyon		Paris		%		14.00
5007		Paul Adam	Rome		%		13.00
5003		Lauson Hen	San Jose	%		12.00

Code Explanation:

The said query in SQL retrieves data from the "salesman" table and returns the following columns:
salesman_id
name
city
The string "%"
The result of commission column multiplied by 100.
The percentage symbol in the query used to represent the data in the "commission" column as a percentage.

Relational Algebra Expression:

Relational Algebra Tree:

Explanation:

Explanation:

Visual presentation :

Practice Online

Query Visualization:

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