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https://issues.apache.org/jira/browse/SOLR-80?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12466307
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Yonik Seeley commented on SOLR-80:
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attached draft (it doesn't work yet, and there isn't any test code).
> negative filter queries
> -----------------------
>
> Key: SOLR-80
> URL: https://issues.apache.org/jira/browse/SOLR-80
> Project: Solr
> Issue Type: New Feature
> Components: search
> Reporter: Yonik Seeley
> Attachments: negative_filters.patch
>
>
> There is a need for negative filter queries to avoid long filter generation
> times and large caching requirements.
> Currently, if someone wants to filter out a small number of documents, they
> must specify the complete set of documents to express those negative
> conditions against.
> q=foo&fq=id:[* TO *] -id:101
> In this example, to filter out a single document, the complete set of
> documents (minus one) is generated, and a large bitset is cached. You could
> also add the restriction to the main query, but that doesn't work with the
> dismax handler which doesn't have a facility for this.
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