diff --git a/dbms/src/DataStreams/AddingDefaultBlockInputStream.h b/dbms/src/DataStreams/AddingDefaultBlockInputStream.h
deleted file mode 100644
index b5be6742371..00000000000
--- a/dbms/src/DataStreams/AddingDefaultBlockInputStream.h
+++ /dev/null
@@ -1,65 +0,0 @@
-#pragma once
-
-#include <DataStreams/IProfilingBlockInputStream.h>
-#include <Interpreters/evaluateMissingDefaults.h>
-#include <Columns/ColumnConst.h>
-#include <Interpreters/Context.h>
-#include <Storages/ColumnDefault.h>
-
-
-namespace DB
-{
-
-
-/** Adds missing columns to the block with default values.
-  * These columns are materialized (not constants).
-  */
-class AddingDefaultBlockInputStream : public IProfilingBlockInputStream
-{
-public:
-    AddingDefaultBlockInputStream(
-        BlockInputStreamPtr input_,
-        NamesAndTypesListPtr required_columns_,
-        const ColumnDefaults & column_defaults_,
-        const Context & context_)
-        : required_columns(required_columns_),
-          column_defaults(column_defaults_), context(context_)
-    {
-        children.push_back(input_);
-    }
-
-    String getName() const override { return "AddingDefault"; }
-
-    String getID() const override
-    {
-        std::stringstream res;
-        res << "AddingDefault(" << children.back()->getID();
-
-        for (NamesAndTypesList::const_iterator it = required_columns->begin(); it != required_columns->end(); ++it)
-            res << ", " << it->name << ", " << it->type->getName();
-
-        res << ")";
-        return res.str();
-    }
-
-protected:
-    Block readImpl() override
-    {
-        Block res = children.back()->read();
-        if (!res)
-            return res;
-        /** @todo if somehow block does not contain values for implicitly-defaulted columns that are prerequisites
-         *    for explicitly-defaulted ones, exception will be thrown during evaluating such columns
-         *    (implicitly-defaulted columns are evaluated on the line after following one. */
-        evaluateMissingDefaults(res, *required_columns, column_defaults, context);
-        res.addDefaults(*required_columns);
-        return res;
-    }
-
-private:
-    NamesAndTypesListPtr required_columns;
-    const ColumnDefaults column_defaults;
-    cosnt Context & context;
-};
-
-}