From 2b506a0a735e31aca7a5a6680a3e185d024011b5 Mon Sep 17 00:00:00 2001
From: Alexey Milovidov <milovidov@yandex-team.ru>
Date: Thu, 29 Jan 2015 06:11:10 +0300
Subject: [PATCH] dbms: addition to prev. revision [#METR-2944].

---
 dbms/src/Interpreters/Join.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dbms/src/Interpreters/Join.cpp b/dbms/src/Interpreters/Join.cpp
index 90edcff5ec0..187811c528f 100644
--- a/dbms/src/Interpreters/Join.cpp
+++ b/dbms/src/Interpreters/Join.cpp
@@ -398,7 +398,7 @@ struct Adder<KIND, ASTJoin::All, Map>
 
 
 template <ASTJoin::Kind KIND, ASTJoin::Strictness STRICTNESS, typename Maps>
-void Join::joinBlockImpl(Block & block, Maps & maps) const
+void Join::joinBlockImpl(Block & block, const Maps & maps) const
 {
 	if (blocks.empty())
 		throw Exception("Attempt to JOIN with empty table", ErrorCodes::EMPTY_DATA_PASSED);