diff --git a/source/dnode/vnode/src/tsdb/tsdbRead.c b/source/dnode/vnode/src/tsdb/tsdbRead.c
index f65fa1cf2799736f9b440079e2c6c31f078d67cd..04dea49e2326461ba7776ac95511e5d15f362575 100644
--- a/source/dnode/vnode/src/tsdb/tsdbRead.c
+++ b/source/dnode/vnode/src/tsdb/tsdbRead.c
@@ -895,7 +895,7 @@ static int32_t copyBlockDataToSDataBlock(STsdbReader* pReader, STableBlockScanIn
     if (pData->cid < pColData->info.colId) {
       colIndex += 1;
     } else if (pData->cid == pColData->info.colId) {
-      if (pData->flag == HAS_NONE || pData->flag == HAS_NULL) {
+      if (((pData->flag & HAS_NONE) == HAS_NONE) || ((pData->flag & HAS_NULL) == HAS_NULL)) {
         colDataAppendNNULL(pColData, 0, remain);
       } else {
         if (IS_NUMERIC_TYPE(pColData->info.type) && asc) {