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From Paul Davis <paul.joseph.da...@gmail.com>
Subject Re: Query by specific date vs range
Date Mon, 18 Oct 2010 23:45:24 GMT
The "key" URL parameter is in effect doing this:

start_key=$(key)&end_key=$(key)

View selection is about sorting. By default, it returns everything
start_key <= row_key < end_key. If you add inclusive_end=true to your
query, it'll change the comparison operators to: start_key <= row_key
<= end_key.

HTH,
Paul Davis

On Mon, Oct 18, 2010 at 7:29 PM, Lee Nelson <lnelson@nelnet.org> wrote:
> When I query using a date range (startkey and endkey) I get a
> response, however when I query by a single date (key=), I get no
> response.  Examples:
>
> http://10.0.1.136:5984/netelligence/_design/telemetry/_view/usage_dates?key="2010/10/15
> 21:20:00 +0000"
> Returns:
> {"total_rows":886,"offset":1,"rows":[]}
>
> However:
> http://10.0.1.136:5984/netelligence/_design/telemetry/_view/usage_dates?startkey="2010/10/15
> 20:15:00 +0000"&endkey="2010/10/15 21:20:00 +0000"
> Returns:
> {"total_rows":888,"offset":0,"rows":[
> {"id":"7963df3f-a271-8da4-3b66-c5a0ed16d0bd","key":"2010/10/15
> 21:15:00 +0000","value":null}
> ]}
>
> I'm also perplexed by the fact that the range query only returns one
> row when there are entries at 21:15 and 21:20.  Why, when I query by
> "key" do I get nothing and when I query by start- and endkey, do I
> only get one of the two values in the range?  I've been banging my
> head against this for two days.
>
> My map function:
> function(doc) {
>    if(doc.sampletime) {
>        emit(doc.sampletime, null);
>    }
> }
>
> There is no reduce function.
>
> Here's an example document:
> {
>   "_id": "ff41b06d-d19c-0275-abac-a38798e9bdbe",
>   "_rev": "1-3986507576f0da9fd5be20fd88724df1",
>   "category": "telemetry",
>   "type": "usage",
>   "measurement": "bandwidth",
>   "device": "rtr02-frfd",
>   "sampletime": "2010/10/17 06:35:00 +0000",
>   "ports": [
>       {
>           "Gi8/36": [
>               {
>                   "InOctets": 0,
>                   "InUcastPkts": 0,
>                   "InMcastPkts": 0,
>                   "InBcastPkts": 0,
>                   "OutOctets": 0,
>                   "OutUcastPkts": 0,
>                   "OutMcastPkts": 0,
>                   "OutBcastPkts": 0
>               }
>           ],
>           "Gi4/0/5": [
>               {
>                   "InOctets": 0,
>                   "InUcastPkts": 0,
>                   "InMcastPkts": 0,
>                   "InBcastPkts": 0,
>                   "OutOctets": 0,
>                   "OutUcastPkts": 0,
>                   "OutMcastPkts": 0,
>                   "OutBcastPkts": 0
>               }
>           ]
>       }
>   ]
> }
>

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