Details
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Task
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Resolution: Fixed
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Major - P3
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None
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None
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None
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Fully Compatible
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QE 2022-04-04, QE 2022-03-07, QE 2022-03-21
Description
The current implementation of $lookup via NLJ in SBE doesn't match the semantics in the classic engine (that is, it doesn't match terminal empty arrays to null/missing/undefined). SERVER-63368 tracks whether we'd like to change the classic semantics.