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Posted 28 Dec 2011

Efficient paging using SQL script

, 28 Dec 2011
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Hi, what about such solution?DECLARE @pageNumber INTDECLARE @rowsOnPage INTSET @rowsOnPage=5SET @pageNumber=2DECLARE @totalItemsToSelect INTSET @totalItemsToSelect=@rowsOnPage * @pageNumberSELECT TOP (@rowsOnPage) * FROM MainTrans WHERE ID IN( SELECT TOP...
Hi, what about such solution?

DECLARE @pageNumber INT
SET @rowsOnPage=5
SET @pageNumber=2
DECLARE @totalItemsToSelect INT
SET @totalItemsToSelect=@rowsOnPage * @pageNumber
SELECT TOP (@rowsOnPage) * FROM MainTrans WHERE ID IN
    SELECT TOP (@totalItemsToSelect) ID FROM MainTrans ORDER BY ID DESC

it looks much shorter.


P.S. of course this solution works only if you have identity column. in my opinion identity column is a must for paging, moreover this approach works for any database not only for MS SQL


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Comments and Discussions

GeneralReason for my vote of 4 I think this script works well, but ... Pin
Robby Tendean28-Dec-11 16:12
memberRobby Tendean28-Dec-11 16:12 
GeneralReason for my vote of 3 The alternative is pretty solid if y... Pin
Helluin28-Dec-11 6:01
memberHelluin28-Dec-11 6:01 
Reason for my vote of 3
The alternative is pretty solid if you do not remove any records from the containing table.
Thing I learned during working with databases and interfaces though is that the identity column stops identifying the data in a scenario where records are actualy getting removed from tables. (not only marked as 'deleted')
In that case ID columns are useless for paging.

EDIT: Dang, did not read through the permalink. As Pablo said, of course.
GeneralActually: 1. TOP does not work on Oracle (at least versions ... Pin
Pablo Aliskevicius28-Dec-11 4:38
memberPablo Aliskevicius28-Dec-11 4:38 

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