Don't know for sure, but did you try using a filter query ?
http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/query-dsl-query-filter.html

On Wednesday, June 11, 2014 9:52:20 AM UTC-3, Jilles van Gurp wrote:
>
> I have a simple problem where it would be useful to a query like: get me 
> everything that matches <query1> except if field foo is in results of 
> <query2>.
>
> The simple solution is to first do query2, fetch the foo field for all the 
> results (potentially thousands), stuff it in some hash and generate a 
> gigantic set with all the values of the foo field and turn that into a bool 
> filter with a lot of term queries in the not that gets added to query1. 
>
> Since I need to support paging through the results, I can't get away with 
> simply tossing deduplicating the result set in memory.
>
> Is there a more elegant way to do this in elasticsearch? 
>
> Jilles
>

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