[jira] [Commented] (COUCHDB-2926) Move $exists into the view query instead of in-memory

["Tony Sun (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/COUCHDB-2926?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15082537#comment-15082537 ] 

Tony Sun commented on COUCHDB-2926:
-----------------------------------

[~nolanlawson] : Is this to address the issue where you get a "no index found" when a user does a simple selector such as 
{code:json}
{"somefield" : {"$exists" : true}}? 
{code}
If so, https://github.com/apache/couchdb-mango/pull/27 will address this issue.
However, I can see this change for obvious performance reasons between allDocs and views. 

> Move $exists into the view query instead of in-memory
> -----------------------------------------------------
>
>                 Key: COUCHDB-2926
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-2926
>             Project: CouchDB
>          Issue Type: Improvement
>          Components: Mango
>            Reporter: Garren Smith
>
> $exists is in-memory - this is totally unnecessary. if you can do $gt: null on an indexed field, then you should be able to do $exists: true because it's exactly the same thing



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