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Subject: Re: How to get only a field in a document
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Date: Sat, 10 Dec 2011 09:57:32 -0500
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Or a view if it's the same field for lots of docs.=20


On Dec 9, 2011, at 8:05 PM, Jim Klo <jim.klo@sri.com> wrote:

> if you know the document ID that you're after, then a show function can ha=
ndle what you're asking without a view:
>=20
> http://guide.couchdb.org/draft/show.html
>=20
>=20
> Jim Klo
> Senior Software Engineer
> Center for Software Engineering
> SRI International
>=20
>=20
>=20
>=20
> On Dec 9, 2011, at 4:10 PM, jack chrispoo wrote:
>=20
>> Hi all,
>>=20
>> I am new to CouchDB and I have a question about getting data in documents=
.
>> I have documents like below:
>>=20
>> {
>>  "field1":"value1",
>>  "field2":"value2",
>>  ....
>> }
>>=20
>> The documents have a lot of fields and in one case I only want to get
>> field1 from the documents. I'm wondering if there is a way to avoid getti=
ng
>> the entire document from CouchDB server because this involves a lot of
>> unnecessary data transmission over the network? I tried creating a view
>> which emits (doc._id,{"field1": doc.fleid1}), but indexing the view takes=

>> really long, and it doesn't seem to improve the performance. So I'm curio=
us
>> if there is an easier way to get only a field out of a document.
>>=20
>> Thanks
>>=20
>> jack
>=20