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SQL Exercises: Display customer name, city and grade by highest grade

SQL Formatting Output: Exercise-8 with Solution

From the following table, write a SQL query to find all the customers. Sort the result-set in descending order on 3rd field. Return customer name, city and grade.

Sample table: customer


Sample Solution:

SELECT cust_name,city,grade 
FROM customer 
ORDER BY 3 DESC;

Output of the Query:

cust_name	city		grade
Brad Guzan	London	
Fabian Johnson	Paris		300
Julian Green	London		300
Brad Davis	New York	200
Jozy Altidor	Moscow		200
Graham Zusi	California	200
Nick Rimando	New York	100
Geoff Cameron	Berlin		100

Relational Algebra Expression:

Relational Algebra Expression: Display customer name, city and grade by highest grade.

Relational Algebra Tree:

Relational Algebra Tree: Display customer name, city and grade by highest grade.

Explanation:

Syntax of display customer name, city and grade in such a manner that, the customer holding highest grade will comes first

Pictorial presentation :

Result of display customer name, city and grade in such a manner that, the customer holding highest grade will comes first

Practice Online


Query Visualization:

Duration:

Query visualization of Display customer name, city and grade by highest grade - Duration

Rows:

Query visualization of Display customer name, city and grade by highest grade - Rows

Cost:

Query visualization of Display customer name, city and grade by highest grade - Cost

 

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Previous: From the following table, write a SQL query to calculate the maximum purchase amount generated by each sales person for every order date. Sort the result-set by sales person id and order date in ascending order. Return sales person id, order date and maximum purchase amount.
Next: From the following table, write a SQL query to count the unique orders, highest purchase amount for each customer. Sort the result-set in descending order on 2nd field. Return customer ID, number of distinct orders and highest purchase amount by each customer.

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SQL: Tips of the Day

How to restore a dump file from mysqldump?

It should be as simple as running this:

mysql -u <user> -p < db_backup.dump

If the dump is of a single database you may have to add a line at the top of the file:

USE <database-name-here>;

Ref: https://bit.ly/3xKmyw2