From 5dcf933012fa0785aa1272cad03377fd714745bd Mon Sep 17 00:00:00 2001
From: Yongqiang YANG <98214048+dataroaring@users.noreply.github.com>
Date: Wed, 14 Sep 2022 08:42:15 +0800
Subject: [PATCH] =?UTF-8?q?[Bug](column)=20ColumnNullable::replace=5Fcolum?=
 =?UTF-8?q?n=5Fdata=20should=20DCHECK=20size=20>=20sel=E2=80=A6=20#12558?=
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---
 be/src/vec/columns/column_nullable.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/be/src/vec/columns/column_nullable.h b/be/src/vec/columns/column_nullable.h
index cb399ab761..723e88c8b6 100644
--- a/be/src/vec/columns/column_nullable.h
+++ b/be/src/vec/columns/column_nullable.h
@@ -282,7 +282,7 @@ public:
     }
 
     void replace_column_data(const IColumn& rhs, size_t row, size_t self_row = 0) override {
-        DCHECK(size() > 1);
+        DCHECK(size() > self_row);
         const ColumnNullable& nullable_rhs = assert_cast<const ColumnNullable&>(rhs);
         null_map->replace_column_data(*nullable_rhs.null_map, row, self_row);