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https://issues.apache.org/jira/browse/LUCENE-8708?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16813239#comment-16813239
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Ignacio Vera commented on LUCENE-8708:
--------------------------------------

Just an idea maybe bias for my background.

One of the issues here is that we visit the tree for each range and this is 
what we are trying to improve. Maybe adding a query that can accept more than 
one range with a logical relationship ('AND', 'OR',...) might be less invasive 
and encapsulates the logic.

> Can we simplify conjunctions of range queries automatically?
> ------------------------------------------------------------
>
>                 Key: LUCENE-8708
>                 URL: https://issues.apache.org/jira/browse/LUCENE-8708
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Adrien Grand
>            Priority: Minor
>         Attachments: interval_range_clauses_merging0704.patch
>
>
> BooleanQuery#rewrite already has some logic to make queries more efficient, 
> such as deduplicating filters or rewriting boolean queries that wrap a single 
> positive clause to that clause.
> It would be nice to also simplify conjunctions of range queries, so that eg. 
> {{foo: [5 TO *] AND foo:[* TO 20]}} would be rewritten to {{foo:[5 TO 20]}}. 
> When constructing queries manually or via the classic query parser, it feels 
> unnecessary as this is something that the user can fix easily. However if you 
> want to implement a query parser that only allows specifying one bound at 
> once, such as Gmail ({{after:2018-12-31}} 
> https://support.google.com/mail/answer/7190?hl=en) or GitHub 
> ({{updated:>=2018-12-31}} 
> https://help.github.com/en/articles/searching-issues-and-pull-requests#search-by-when-an-issue-or-pull-request-was-created-or-last-updated)
>  then you might end up with inefficient queries if the end user specifies 
> both an upper and a lower bound. It would be nice if we optimized those 
> automatically.



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