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Diffstat (limited to 'src/mongo/db/pipeline/document_source_lookup.cpp')
-rw-r--r-- | src/mongo/db/pipeline/document_source_lookup.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/mongo/db/pipeline/document_source_lookup.cpp b/src/mongo/db/pipeline/document_source_lookup.cpp index 701bf51ba3f..1c5d8c49319 100644 --- a/src/mongo/db/pipeline/document_source_lookup.cpp +++ b/src/mongo/db/pipeline/document_source_lookup.cpp @@ -217,7 +217,8 @@ StageConstraints DocumentSourceLookUp::constraints(Pipeline::SplitState) const { diskRequirement, FacetRequirement::kAllowed, txnRequirement, - LookupRequirement::kAllowed); + LookupRequirement::kAllowed, + UnionRequirement::kAllowed); constraints.canSwapWithMatch = true; constraints.canSwapWithLimitAndSample = !_unwindSrc; |