From 42c543a64d77434d431fc5d7b43fd17c08e09986 Mon Sep 17 00:00:00 2001
From: Nikolai Kochetov <nik-kochetov@yandex-team.ru>
Date: Wed, 16 Sep 2020 17:58:54 +0300
Subject: [PATCH] Fix GenericSource

---
 src/Functions/GatherUtils/Sources.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Functions/GatherUtils/Sources.h b/src/Functions/GatherUtils/Sources.h
index cc7f2b662b6..2795b7ac4ed 100644
--- a/src/Functions/GatherUtils/Sources.h
+++ b/src/Functions/GatherUtils/Sources.h
@@ -573,7 +573,7 @@ struct GenericArraySource : public ArraySourceImpl<GenericArraySource>
 
     size_t getSizeForReserve() const override
     {
-        return elements.size();
+        return offsets.size();
     }
 
     size_t getColumnSize() const override