Fix tests.

src/DataTypes/DataTypeLowCardinalityHelpers.cpp

@@ -34,7 +34,7 @@ DataTypePtr recursiveRemoveLowCardinality(const DataTypePtr & type)
             element = recursiveRemoveLowCardinality(element);
 
         if (tuple_type->haveExplicitNames())
-            return std::make_shared<DataTypeTuple>(elements, tuple_type->getElementNames());
+            return std::make_shared<DataTypeTuple>(elements, tuple_type->getElementNames(), tuple_type->serializeNames());
         else
             return std::make_shared<DataTypeTuple>(elements);
     }

src/DataTypes/DataTypeTuple.h

@@ -104,6 +104,7 @@ public:
     size_t getPositionByName(const String & name) const;
 
     bool haveExplicitNames() const { return have_explicit_names; }
+    bool serializeNames() const { return serialize_names; }
 };
 
 }