Details
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Improvement
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Status: Closed
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Major - P3
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Resolution: Duplicate
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Query
Description
$lookup is currently analogous to a left-outer-join, in some cases, i have come across a requirement for a full-outer-join, and i think this could be a valuable enhancement.
see this stack-overflow question for additional background
Attachments
Issue Links
- duplicates
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SERVER-23201 provide union operator to union two collections (or more)
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- Closed
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