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  1. Core Server
  2. SERVER-29376

Rewrite $lookup localField/foreignField stages to execute with pipeline/let

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    Details

    • Type: Task
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Won't Do
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: Aggregation Framework
    • Labels:
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      Description

      With the addition of pipeline/let syntax to $lookup, we have a split in parts of the DocumentSourceLookup implementation to address both forms. We can unify implementation by rewriting $lookup with localField/foreignField syntax to run using a foreign pipeline with match on 'let' variables.

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          depends on

          Task - A task that needs to be done. SERVER-29073 Allow variable definition within $lookup

          • Major - P3 - Major loss of function.
          • Closed
          related to

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-34927 allow localField and foreignField with more expressive $lookup pipeline

          • Major - P3 - Major loss of function.
          • Closed

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              Assignee:
              backlog-query-optimization Backlog - Query Optimization
              Reporter:
              james.wahlin James Wahlin
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                Resolved: