SKIP and TAKE ‘N’ number of records in a SQL Server Select Query

How do you SKIP and TAKE ‘n’ number of records from a resultset? I have done this previously using LINQ as demonstrated over here Implementing Paging in a Generic List using LINQ

But how do you skip and take ‘n’ number of records in SQL Server 2005/2008? Here’s how:

DECLARE @TT table
(
ProductID int,
CategoryGroupID int,
CategoryGroupName varchar(10)
)

-- Create Sample Data
INSERT INTO @TT VALUES ( 101, 1, 'AA')
INSERT INTO @TT VALUES ( 203, 1, 'AA');
INSERT INTO @TT VALUES ( 305, 1, 'AA');
INSERT INTO @TT VALUES ( 403, 2, 'BB');
INSERT INTO @TT VALUES ( 553, 2, 'BB');
INSERT INTO @TT VALUES ( 634, 2, 'BB');
INSERT INTO @TT VALUES ( 744, 2, 'BB');
INSERT INTO @TT VALUES ( 838, 3, 'CC');
INSERT INTO @TT VALUES ( 939, 3, 'CC');
INSERT INTO @TT VALUES ( 1245, 3, 'CC');
INSERT INTO @TT VALUES ( 1341, 3, 'CC');
INSERT INTO @TT VALUES ( 1452, 3, 'CC');
INSERT INTO @TT VALUES ( 1565, 4, 'DD');


SELECT ProductID, CategoryGroupID
FROM
(
SELECT tbl.*, ROW_NUMBER() OVER (ORDER BY ProductID) rownum
FROM @TT as tbl
) seq
WHERE seq.rownum BETWEEN 6 AND 10

As you can see in the query above, we are skipping the first 5 records on an ordered resultset and taking the next 5 records.

OUTPUT

image


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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4 comments:

Madhivanan said...

Also see how you can effectively use row_number() function for various purposes

http://beyondrelational.com/blogs/madhivanan/archive/2007/08/27/multipurpose-row-number-function.aspx

Madhivanan

Jeffrey said...

Thanks for that link

Anonymous said...

Thanks a lot

Anonymous said...

You'd be a little better off just doing a WHERE rownum > 5 and selecting the top 5; then you don't actually have to evaluate the condition for every row.