SQL: Select all columns that satisfy a specific condition

SQL Basic Select Statement: Exercise-10 with Solution.

From the following table, write a SQL query to find customers whose grade is 200. Return customer_id, cust_name, city, grade, salesman_id.

Sample table: customer

Sample Solution:

SELECT *FROM customer
WHERE grade=200;

Output of the Query:

customer_id	cust_name	 city	    grade	salesman_id
3007		Brad Davis	New York	200		5001
3005		Graham Zusi	California	200		5002
3003		Jozy Altidor    Moscow		200		5007

Relational Algebra Expression:

Relational Algebra Tree:

Explanation :

Pictorial presentation :

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Query Visualization:

Duration:

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Cost:

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