How to List TOP 'N' Rows along with a Count using SQL Server

I recently came across a requirement where the user had to list the details of TOP 5 rows that matched a particular critera, but also had to list the total no rows that matched that criteria.

Here's how it can be solved. I am using the Customers table of the Northwind database:

SELECT TOP 5 CustomerID, CompanyName,
COUNT(*) OVER () AS TotalSimilarTitles
FROM Northwind.dbo.Customers
WHERE ContactTitle = 'Owner'

In the query over here, I list the TOP 5 Customers who have the ContactTitle as 'Owner'. The query also counts the total number of Customers that have the ContactTitle as 'Owner'

About The Author

Suprotim Agarwal, MCSD, MCAD, MCDBA, MCSE, is the founder of DotNetCurry, DNC Magazine for Developers, SQLServerCurry and DevCurry. He has also authored a couple of books 51 Recipes using jQuery with ASP.NET Controls and a new one recently at The Absolutely Awesome jQuery CookBook.

Suprotim has received the prestigous Microsoft MVP award for nine times in a row now. In a professional capacity, he is the CEO of A2Z Knowledge Visuals Pvt Ltd, a digital group that represents premium web sites and digital publications comprising of Professional web, windows, mobile and cloud developers, technical managers, and architects.

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1 comment:

sandy said...

SELECT a.CustomerID, a.CompanyName,(Select Count(*)from
(select TOP (5) * from Northwind.dbo.Customers
WHERE CustomerID = a.CustomerID AND ContactTitle = 'Owner') as TotalSimilarTitles,COUNT(*)
FROM Northwind.dbo.Customers a
group by a.CustomerID