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https://issues.apache.org/jira/browse/ASTERIXDB-3223?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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shahrzad shirazi resolved ASTERIXDB-3223.
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Resolution: Fixed
> Enabling the index only plan when index includes UNKNOWNs
> ----------------------------------------------------------
>
> Key: ASTERIXDB-3223
> URL: https://issues.apache.org/jira/browse/ASTERIXDB-3223
> Project: Apache AsterixDB
> Issue Type: Improvement
> Components: COMP - Compiler
> Reporter: shahrzad shirazi
> Priority: Major
>
> When a secondary index includes UNKNOWNs, we will not create an index only
> plan for it even if the query is qualified to have an index-only plan,
> because the predicate in query will incorrectly return NULLs/MISSINGs
> matches. The idea is to change the query plan to have an index only plan
> which returns the right result.
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