From 7f69df63fdd80d43d1eb0a9be5d7fc17101b04af Mon Sep 17 00:00:00 2001
From: Nikita Taranov <nikita.taranov@clickhouse.com>
Date: Thu, 8 Aug 2024 15:00:34 +0100
Subject: [PATCH] small opt

---
 src/Interpreters/HashJoin/HashJoin.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/Interpreters/HashJoin/HashJoin.h b/src/Interpreters/HashJoin/HashJoin.h
index 45e6a739a5d..a25e6b6fb7c 100644
--- a/src/Interpreters/HashJoin/HashJoin.h
+++ b/src/Interpreters/HashJoin/HashJoin.h
@@ -1,5 +1,6 @@
 #pragma once
 
+#include <algorithm>
 #include <deque>
 #include <memory>
 #include <optional>
@@ -205,6 +206,10 @@ public:
         void filterBySelector()
         {
             chassert(block);
+
+            if (!wasScattered())
+                return;
+
             auto columns = block.getColumns();
             for (auto & col : columns)
             {