diff --git a/dbms/include/DB/Columns/ColumnArray.h b/dbms/include/DB/Columns/ColumnArray.h
index 2988b758607..eb69a441df9 100644
--- a/dbms/include/DB/Columns/ColumnArray.h
+++ b/dbms/include/DB/Columns/ColumnArray.h
@@ -203,7 +203,7 @@ public:
 
 		Permutation nested_perm(getOffsets().back());
 
-		ColumnArray * res_ = new ColumnArray(data);
+		ColumnArray * res_ = new ColumnArray(data->cloneEmpty());
 		ColumnPtr res = res_;
 
 		Offsets_t & res_offsets = res_->getOffsets();
diff --git a/dbms/include/DB/Columns/ColumnNested.h b/dbms/include/DB/Columns/ColumnNested.h
index b735c1fba12..b024628966c 100644
--- a/dbms/include/DB/Columns/ColumnNested.h
+++ b/dbms/include/DB/Columns/ColumnNested.h
@@ -228,7 +228,7 @@ public:
 
 		Permutation nested_perm(getOffsets().back());
 
-		ColumnNested * res_ = new ColumnNested(data);
+		ColumnNested * res_ = new ColumnNested(data->cloneEmpty());
 		ColumnPtr res = res_;
 
 		Offsets_t & res_offsets = res_->getOffsets();
diff --git a/dbms/include/DB/Columns/ColumnVector.h b/dbms/include/DB/Columns/ColumnVector.h
index f646ee6e438..b959253f062 100644
--- a/dbms/include/DB/Columns/ColumnVector.h
+++ b/dbms/include/DB/Columns/ColumnVector.h
@@ -74,7 +74,7 @@ template <> struct CompareHelper<Float32> : public FloatCompareHelper<Float32> {
 template <> struct CompareHelper<Float64> : public FloatCompareHelper<Float64> {};
 
 
-/** Шаблон столбцов, которые используют для хранения std::vector.
+/** Шаблон столбцов, которые используют для хранения простой массив.
   */
 template <typename T>
 class ColumnVectorBase : public IColumn