[GitHub] [couchdb] janl commented on issue #2387: Output the _rev by default in views (similar to _id)

[GitBox <gi...@apache.org>]

janl commented on issue #2387: Output the _rev by default in views (similar to _id)
URL: https://github.com/apache/couchdb/issues/2387#issuecomment-570777123
 
 
   I think this is a useful addition IF we can make it efficient to provide.
   
   Currently, CouchDB internally needs to store the doc `_id` inside a view index to effectively perform view updates. Because it is already in the index, we show it with every result*. If the view index already also includes the `_rev` for each row (something I’m not sure about at the moment), then we could add an option along the lines of `?include_rev=true` to show it as well.
   
   If the `_rev` is NOT already in the view index, would not suggest we add, just for this feature for performance reasons.
   
   * there might be a valid reverse request to hide the id if it is not needed (`?include_id=false` maybe)

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