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From Stack <st...@duboce.net>
Subject Re: Does the scanner interface have a "previous" method?
Date Sat, 06 Mar 2010 22:17:18 GMT
On Sat, Mar 6, 2010 at 7:59 AM, Hua Su <huas.su@gmail.com> wrote:
> My question is, does there exist any scanner interface that supports to get
> "previous" data record in the table?
>
No.

Previous would require seeking our backward in storefiles.  We have
something that sort of does this already for the catalog tables and
its an expensive call.

Do you really need a previous?  You want to walk your table in reverse?

St.Ack

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