If you have been looking out for a query that gives you TOP 'N' and Bottom 'N' records of a table, then check this out.
The query shown below selects the TOP 5 and BOTTOM 5 records ordered by CustomerID from the 'Customers' table of the Northwind database:
;With CTETemp
as
(
Select
CustomerID
,ROW_NUMBER() OVER (Order BY CustomerID) as TopFive
,ROW_NUMBER() OVER (Order BY CustomerID Desc) as BottomFive
FROM
Customers
)
Select CustomerID From CTETemp Where TopFive <=5 or BottomFive <=5
ORDER BY TopFive asc
Result:Customer ID
ALFKI
ANATR
ANTON
AROUT
BERGS
WARTH
WELLI
WHITC
WILMK
WOLZA
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.
Get in touch with him on Twitter @suprotimagarwal, LinkedIn or befriend him on Facebook
2 comments:
ROW_NUMBER() !
which version of sql server is this?
or
where is the function?
SQL Server 2005, 2008 :)
Post a Comment