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Type: Improvement
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Resolution: Unresolved
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Priority: Minor - P4
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None
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Affects Version/s: None
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Component/s: None
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Query Integration
Our current input validation for $rankFusion enforces that none of the input pipelines can modify the documents or their fields in any way (eg. $project, $group etc.). Because $rankFusion gets desugared to a pipeline with stages like $group and $project that aren’t legal, nesting $rankFusion doesn't work.
The same idea also applies to testing $scoreFusion in $rankFusion.
- is related to
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SERVER-92213 Implement desugaring of $rankFusion
- Closed
- related to
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SERVER-94602 Allow nested $scoreFusion
- Open