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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
DECLARE @rowsOnPage 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
) ORDER BY ID ASC
it looks much shorter.
 
Thanks,
Kiryl
 
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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NeoPunk

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Comments and Discussions

 
GeneralReason for my vote of 4 I think this script works well, but ... PinmemberRobby Tendean28-Dec-11 16:12 
Reason for my vote of 4
I think this script works well, but it is selecting more records in the sub query part since you selected from the first record in the table until the last record needed by the paging. Not that sure this will affect the performance or not.
GeneralReason for my vote of 3 The alternative is pretty solid if y... PinmemberHelluin28-Dec-11 6:01 
GeneralActually: 1. TOP does not work on Oracle (at least versions ... PinmemberPablo Aliskevicius28-Dec-11 4:38 

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