Re: sql select top clause

Author: Gérard Lochon

Posted: 2011-02-21 at 16:27:58

> How do you know that you are not loosing any rows between set 1 and

> set 2? Will there always be a 1:1 relationship code to row for each

> itmcode that is not deleted?

When you navigate into the grid, there is an information easily known : the

current page number being loaded, while using a local var, i.e. pagenum

(init to 1, increase when next page, decrease when previous page).

So you can request :

SELECT * ;

FROM ( SELECT TOP 20 * ;

FROM ( SELECT TOP 20*pagenum itemcode(, and whatever) ;

FROM silver.dbo.items ORDER BY itemcode ) AS xx ;

ORDER BY itemcode DESC ) AS yy ;

ORDER BY itemcode

Gérard.

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©2011 Gérard Lochon