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Michael McCandless commented on LUCENE-7899: -------------------------------------------- bq. Something like DocValuesFieldExistsQuery? +1, I'll work up a patch; I think we should do this for 7.0? > Add "exists" query for doc values > --------------------------------- > > Key: LUCENE-7899 > URL: https://issues.apache.org/jira/browse/LUCENE-7899 > Project: Lucene - Core > Issue Type: Improvement > Reporter: Michael McCandless > Assignee: Michael McCandless > Fix For: 7.0 > > > I don't think we have a query today to efficiently test whether a doc values > field exists (has any value) for each document in the index? > Now that we use iterators to access doc values, this should be an efficient > query: we can return the DISI we get for the doc values. > ElasticSearch indexes its own field to record which field names occur in a > document, so it's able to do "exists" for any field (not just doc values > fields), but I think doc values fields we can just get "for free". > I haven't started on this ... just wanted to open the issue first for > discussion. -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org