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From Weishung Chung <weish...@gmail.com>
Subject Re: min, max
Date Wed, 02 Mar 2011 14:53:54 GMT
Awesome, thanks a lot. I will try them out n let u guys know the result.


On Tue, Mar 1, 2011 at 11:54 PM, 陈加俊 <cjjvictory@gmail.com> wrote:

> Yes I do it like this. But I hava another problem I can't count the rows of
> one table fast.
>
> On Wed, Mar 2, 2011 at 12:58 PM, Ted Yu <yuzhihong@gmail.com> wrote:
>
> > Weishung:
> > For max, you can enumerate the regions for your table. Start the scan
> from
> > the first row in the last region.
> >
> > On Tue, Mar 1, 2011 at 8:51 PM, Stack <stack@duboce.net> wrote:
> >
> > > On Tue, Mar 1, 2011 at 2:44 PM, Ted Yu <yuzhihong@gmail.com> wrote:
> > > > For min, you can write your own filter which extends FilterBase so
> that
> > > the
> > > > scan stops after seeing the first row.
> > > >
> > >
> > > Or just start the scan at the a row whose name is the empty byte array
> > > and kill the scan after the first return; the first return will be the
> > > first row in table.
> > >
> > > I don't know how to get the last row in a table, easily.
> > >
> > > St.Ack
> > >
> >
>
>
>
> --
> Thanks & Best regards
> jiajun
>

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