From 7a37e24b52f415e2590e73b1e2d0614c82720c55 Mon Sep 17 00:00:00 2001
From: avogar <pav.cruglov@yandex.ru>
Date: Thu, 21 Oct 2021 16:58:25 +0300
Subject: [PATCH] Small fix in deserializeWholeText

---
 src/DataTypes/Serializations/SerializationNullable.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/DataTypes/Serializations/SerializationNullable.cpp b/src/DataTypes/Serializations/SerializationNullable.cpp
index c3a13cc3a52..cc73bac9a97 100644
--- a/src/DataTypes/Serializations/SerializationNullable.cpp
+++ b/src/DataTypes/Serializations/SerializationNullable.cpp
@@ -353,11 +353,11 @@ ReturnType SerializationNullable::deserializeWholeTextImpl(IColumn & column, Rea
         buf.setCheckpoint();
         SCOPE_EXIT(buf.dropCheckpoint());
 
-        if (checkStringCaseInsensitive("NULL", buf))
+        if (checkStringCaseInsensitive("NULL", buf) && buf.eof())
             return true;
 
         buf.rollbackToCheckpoint();
-        if (checkStringCaseInsensitive("ᴺᵁᴸᴸ", buf))
+        if (checkStringCaseInsensitive("ᴺᵁᴸᴸ", buf) && buf.eof())
             return true;
 
         buf.rollbackToCheckpoint();