From 2f4968c8da61a8e2d73e5a6bc320761a565bd436 Mon Sep 17 00:00:00 2001
From: Nikolai Kochetov <nik-kochetov@yandex-team.ru>
Date: Tue, 22 Dec 2020 19:07:04 +0300
Subject: [PATCH] Fix style.

---
 src/Functions/ExtractString.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/Functions/ExtractString.h b/src/Functions/ExtractString.h
index b659d072887..c4251f8c4a6 100644
--- a/src/Functions/ExtractString.h
+++ b/src/Functions/ExtractString.h
@@ -1,3 +1,4 @@
+#pragma once
 #include <Common/PODArray.h>
 #include <Common/StringUtils/StringUtils.h>
 #include <Common/UTF8Helpers.h>