From b25f6ba5b677f3f1e34a33ea02020ffb228bea83 Mon Sep 17 00:00:00 2001
From: vdimir <vdimir@yandex-team.ru>
Date: Fri, 18 Jun 2021 11:13:53 +0300
Subject: [PATCH] Remove assumeMutable from removeColumnNullability

---
 src/Interpreters/join_common.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/Interpreters/join_common.cpp b/src/Interpreters/join_common.cpp
index 9f725c3cd59..b8352e61eae 100644
--- a/src/Interpreters/join_common.cpp
+++ b/src/Interpreters/join_common.cpp
@@ -130,9 +130,11 @@ void removeColumnNullability(ColumnWithTypeAndName & column)
         const auto & dict_type = typeid_cast<const DataTypeLowCardinality *>(column.type.get())->getDictionaryType();
         column.type = std::make_shared<DataTypeLowCardinality>(removeNullable(dict_type));
 
-        ColumnLowCardinality * col_as_lc = typeid_cast<ColumnLowCardinality *>(column.column->assumeMutable().get());
+        auto mut_col = IColumn::mutate(std::move(column.column));
+        ColumnLowCardinality * col_as_lc = assert_cast<ColumnLowCardinality *>(mut_col.get());
         if (col_as_lc && col_as_lc->nestedIsNullable())
             col_as_lc->nestedRemoveNullable();
+        column.column = std::move(mut_col);
 
         return;
     }