From edf66a35725d00a1bde9649bb3d13a8c524e8ae4 Mon Sep 17 00:00:00 2001
From: Ganlin Zhao <ganlinzhao@hotmail.com>
Date: Mon, 30 May 2022 16:56:43 +0800
Subject: [PATCH] fix(query): fix tail result incorrect when column containing
 null value

TD-16122
---
 source/libs/function/src/builtinsimpl.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/source/libs/function/src/builtinsimpl.c b/source/libs/function/src/builtinsimpl.c
index 068d06fc31..8707946253 100644
--- a/source/libs/function/src/builtinsimpl.c
+++ b/source/libs/function/src/builtinsimpl.c
@@ -3776,6 +3776,7 @@ static void tailAssignResult(STailItem* pItem, char *data, int32_t colBytes, TSK
   if (isNull) {
     pItem->isNull = true;
   } else {
+    pItem->isNull = false;
     memcpy(pItem->data, data, colBytes);
   }
 }
-- 
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