SERVER-52736 Collation support in SBE

1 files changed, 4 insertions, 1 deletions

diff --git a/src/mongo/db/exec/sbe/stages/hash_join.h b/src/mongo/db/exec/sbe/stages/hash_join.h
index e70378962ab..f40af886a02 100644
--- a/src/mongo/db/exec/sbe/stages/hash_join.h
+++ b/src/mongo/db/exec/sbe/stages/hash_join.h
@@ -60,7 +60,8 @@ public:
 private:
     using TableType = std::unordered_multimap<value::MaterializedRow,  // NOLINT
                                               value::MaterializedRow,
-                                              value::MaterializedRowHasher>;
+                                              value::MaterializedRowHasher,
+                                              value::MaterializedRowEq>;
 
     using HashKeyAccessor = value::MaterializedRowKeyAccessor<TableType::iterator>;
     using HashProjectAccessor = value::MaterializedRowValueAccessor<TableType::iterator>;
@@ -91,6 +92,8 @@ private:
     // Key used to probe inside the hash table.
     value::MaterializedRow _probeKey;
 
+    // TODO SERVER-54025: Update HashJoinStage so that it's mechanism for matching outer keys and
+    // inner keys is collation-aware.
     TableType _ht;
     TableType::iterator _htIt;
     TableType::iterator _htItEnd;