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  1. Core Server
  2. SERVER-27496

allow self-$lookup on shard key value equality pre-merge on a sharded collection

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    • Improvement
    • Status: Backlog
    • Major - P3
    • Resolution: Unresolved
    • None
    • None
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    Description

      In cases where there is no merge stage (or we are before it), it may be possible to allow self-lookup on sharded collection if the local and foreign field is the same and it's the shard key.

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              backlog-query-optimization Backlog - Query Optimization
              asya.kamsky@mongodb.com Asya Kamsky
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                Created:
                Updated: