AdventureWorks Database: Tax difference between highest and lowest-taxed state or province

SQL Query - AdventureWorks: Exercise-139 with Solution

139. From the following table write a query in SQL to calculate the tax difference between the highest and lowest tax-rate state or province.

Sample table: Sales.SalesTaxRate

Click to view Full table

Sample Solution:

SELECT MAX(TaxRate) - MIN(TaxRate) AS "Tax Rate Difference"  
FROM Sales.SalesTaxRate  
WHERE StateProvinceID IS NOT NULL;

Sample Output:

Tax Rate Difference|
-------------------+
               14.6|

SQL AdventureWorks Editor:

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