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  1. Couchbase Server
  2. MB-29742

single predicate is sargable to adaptive index it should use it

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Details

    • Improvement
    • Status: Open
    • Major
    • Resolution: Unresolved
    • 5.5.0
    • feature-backlog
    • query
    • None

    Description

      CREATE INDEX ix4 ON default( DISTINCT PAIRS({ type ,domain,data.email.date, data.email.messageId,
       data.email.subject})) WHERE type = "email";
       
      EXPLAIN SELECT *
      from default
      WHERE data.email.date =0
      and data.email.messageId =0
      and data.email.recipient.mail =""
      and data.email.subject
      and type = "email";
      

      Query has predicate on data.email.recipient.mail which is not part of the index. So index is not selected.
      Adaptive index always does Fetch, if single predicate is part of index it should use that index because others will applied post Fetch.

      https://forums.couchbase.com/t/adaptive-index-question/16904

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            keshav Keshav Murthy
            Sitaram.Vemulapalli Sitaram Vemulapalli
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            Dates

              Created:
              Updated:

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                PagerDuty