Question

split results into pages

Asked by: pigmentarts

Last question on this. I would like to create pages i.e. split the results out and only show 50 at a time. Now in the passed I have done this using a stored procedure but is there a way to do this in the query itself?

i remember something  like this on the page

Page #rc.PageNumber# of #Ceiling(rc.reccount)#

and I could pass in the page number etc

what would i do to the query?

SELECT s.storeId, s.name as storeName, s.pos, d.depId, d.name as depName, d.pos, c.name as catName, c.catId, (SELECT COUNT(*) as proCount FROM products p WHERE p.catId = c.catId AND p.active != 'off') as empt, p.name as prodName,p.prodID,p.active
    FROM stores s
    LEFT JOIN departments d on s.storeId = d.storeId
    LEFT JOIN categories c on d.depId = c.depId
    LEFT JOIN products p on p.catId = c.catId
    AND exists (SELECT 1 FROM products z WHERE p.catId = c.catId AND z.active != 'off' and p.prodId=z.ProdId) 
    ORDER BY storeName, depName, catName, prodName

                                  
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Asked On
2009-08-30 at 13:31:01ID24693490
Topics

SQL Server 2005

,

MS SQL Server

,

Cold Fusion Markup Language

Participating Experts
2
Points
500
Comments
7

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Answers

 

by: angelIIIPosted on 2009-08-30 at 13:36:05ID: 25219210

this should do to get page 2 (rows 51 to 100):

SELECT * FROM (
SELECT s.storeId, s.name as storeName, s.pos, d.depId, d.name as depName, d.pos, c.name as catName, c.catId
   , (SELECT COUNT(*) as proCount FROM products p WHERE p.catId = c.catId AND p.active != 'off') as empt
   , p.name as prodName,p.prodID,p.active
   , ROW_NUMBER() OVER ( ORDER BY s.name , d.name ,  c.name , p.name ) r
    FROM stores s
    LEFT JOIN departments d on s.storeId = d.storeId
    LEFT JOIN categories c on d.depId = c.depId
    LEFT JOIN products p on p.catId = c.catId
    AND exists (SELECT 1 FROM products z WHERE p.catId = c.catId AND z.active != 'off' and p.prodId=z.ProdId) 
) sq
WHERE sq.r >= 51 
  and sq.r <= 100
ORDER BY storeName, depName, catName, prodName
                                              
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by: mSharfiPosted on 2009-08-30 at 13:48:37ID: 25219271

 

by: pigmentartsPosted on 2009-08-30 at 13:53:42ID: 25219294

@ angelIII

error
[Macromedia][SQLServer JDBC Driver][SQLServer]The column 'pos' was specified multiple times for 'sq'.

 

by: angelIIIPosted on 2009-08-30 at 13:58:37ID: 25219316

indeed. as for the different "name" columns, you have to give a different alias for the "pos" column also:

SELECT * FROM (
SELECT s.storeId, s.name as storeName, s.pos storePos, d.depId, d.name as depName, d.pos depPos, c.name as catName, c.catId
   , (SELECT COUNT(*) as proCount FROM products p WHERE p.catId = c.catId AND p.active != 'off') as empt
   , p.name as prodName,p.prodID,p.active
   , ROW_NUMBER() OVER ( ORDER BY s.name , d.name ,  c.name , p.name ) r
    FROM stores s
    LEFT JOIN departments d on s.storeId = d.storeId
    LEFT JOIN categories c on d.depId = c.depId
    LEFT JOIN products p on p.catId = c.catId
    AND exists (SELECT 1 FROM products z WHERE p.catId = c.catId AND z.active != 'off' and p.prodId=z.ProdId) 
) sq
WHERE sq.r >= 51 
  and sq.r <= 100
ORDER BY storeName, depName, catName, prodName

                                              
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by: pigmentartsPosted on 2009-08-30 at 13:59:36ID: 25219322

how would it work if I passed in the Target Page and page size?

 

by: angelIIIPosted on 2009-08-30 at 14:02:24ID: 25219336

simply maths:


WHERE sq.r > ( @page_number-1) * @page_size
  and sq.r <= @page_number * @page_size 
                                              
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by: pigmentartsPosted on 2009-08-30 at 14:03:28ID: 25219344

i see now yes. thanks : )

20120131-EE-VQP-002

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