From e501df857f31644e2d441cb09229cd73fc278e42 Mon Sep 17 00:00:00 2001
From: Cary Xu <klxu@taosdata.com>
Date: Wed, 3 Nov 2021 15:33:17 +0800
Subject: [PATCH] logic for update 2

---
 src/common/src/tdataformat.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/common/src/tdataformat.c b/src/common/src/tdataformat.c
index c57baa2cf8..2ea2b79078 100644
--- a/src/common/src/tdataformat.c
+++ b/src/common/src/tdataformat.c
@@ -491,7 +491,7 @@ static void tdAppendDataRowToDataCol(SDataRow row, STSchema *pSchema, SDataCols
     } else if (pRowCol->colId < pDataCol->colId) {
       rcol++;
     } else {
-      if(forceSetNull || !isAllRowsNull(pDataCol)) {
+      if(forceSetNull) {
         dataColAppendVal(pDataCol, getNullValue(pDataCol->type), pCols->numOfRows, pCols->maxPoints, rowOffset);
       }
       dcol++;
@@ -534,7 +534,7 @@ static void tdAppendKvRowToDataCol(SKVRow row, STSchema *pSchema, SDataCols *pCo
     } else if (colIdx->colId < pDataCol->colId) {
       ++rcol;
     } else {
-      if (forceSetNull || !isAllRowsNull(pDataCol)) {
+      if (forceSetNull) {
         dataColAppendVal(pDataCol, getNullValue(pDataCol->type), pCols->numOfRows, pCols->maxPoints, rowOffset);
       }
       ++dcol;
-- 
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