Re: SQL Cursor Positioning with Web Application

[Jim Essinger <dilbernator@xxxxxxxxx>]

I know that with STRSQL interactive, I can tell it not to refresh the data
on page up, where page down will get the next page of results.  This leaves
out any new record or changes to records, but would preserver the paging.

Is there some way to do that with system settings for SQL?

Jim

On Thu, Jul 30, 2009 at 9:30 AM, Bradley V. Stone <bvstone@xxxxxxxxxxxx>wrote:

>   For years I've written Web Applications using dynamic SQL to build result
>   sets.
>
>   For example, if a user wants to search a transaction history, I give them
>   a bunch of fields that they can use to select records, and also options
> to
>   sort by any of the columns.  Pretty simple when using dynamic SQL.
>
>   For paging I store the RRN of the result set so when they click
> "previous"
>   or "next" I use relative positioning with my SQL.  Works great.
>
>   Now in this particular case where we're querying a transaction file it
>   gets updated very often.  Lets say a few records every minute.  So lets
>   say they view page one, click next so they're on page 2.  Then next so
>   they're on page 3.   During this time, 10 new records were added.  So
> they
>   go back which should be page 2, but it's really (for lack of a better
>   term) page 2.5 since more records have been added.  :)  So it loses the
>   positioning.
>
>   So, without using persistance, temp files, etc..  anyone have any ideas
>   here?  Or is this a case where "that's just how it will work".
>
>   Thanks!
>   --
>
>   Bradley V. Stone
>   BVSTools, Inc.
>   [1]www.BVSTools.com
>   [2]www.eRPGSDK.com
>
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>
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