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-rw-r--r--src/mongo/db/pipeline/expression.cpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/mongo/db/pipeline/expression.cpp b/src/mongo/db/pipeline/expression.cpp
index 30cafd8ba23..9678e16c206 100644
--- a/src/mongo/db/pipeline/expression.cpp
+++ b/src/mongo/db/pipeline/expression.cpp
@@ -68,6 +68,9 @@ static Value serializeConstant(Value val) {
return Value(DOC("$const" << val));
}
+constexpr Variables::Id Variables::kRootId;
+constexpr Variables::Id Variables::kRemoveId;
+
const StringMap<Variables::Id> Variables::kBuiltinVarNameToId = {{"ROOT"_sd, kRootId},
{"REMOVE"_sd, kRemoveId}};