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Date: Wed, 17 Dec 2008 16:06:03 +0000
From: "Paul Carey" <paul.p.carey@gmail.com>
To: user@couchdb.apache.org
Subject: Re: Arguments for Reduce function
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Hi Raj

At a guess you're trying to get the doc count based on a particular
characteristic of the doc.

You might want to try something like

function (doc) {
  emit(doc.i, doc);
}

function (keys, vals) {
 return sum(vals);
}

and then query with something like

/my_db/_view/app/by_i?startkey=null&endkey=pivot
/my_db/_view/app/by_i?startkey=pivot&endkey={}

varying pivot as you wish.

If you wanted to see all the docs, simply query with reduce=false

Also your reduce function probably wouldn't behave as you'd expect
when invoked as a rereduce - at some point the values param would be
[values.length, a, b] array returned from a previous invocation.

Hope this helps

Paul

On Wed, Dec 17, 2008 at 3:43 PM, Rajkumar S <rajkumars@gmail.com> wrote:
> Hi,
>
> I have a (simplified) reduce function like
>
>
> function(key,values){
>    var a,b;
>        for (var i=0; i< values.length; ++i) {
>            if (values[i] < 6){
>                a++;
>            } else {
>                b++;
>            }
>        }
>    }
>    return [values.length,a,b];
> }
>
> The value 6 here is hard coded, is it possible to pass this via some
> sort of arguments? Also how can I retrieve all results of a view ?
>
> Thanks and regards,
>
> raj
>