fix(query): clear flag before assign data.

source/libs/executor/src/executorimpl.c

@@ -1856,12 +1856,13 @@ void extractQualifiedTupleByFilterResult(SSDataBlock* pBlock, const int8_t* rowR
     for (int32_t i = 0; i < pBlock->info.numOfCols; ++i) {
       SColumnInfoData* pSrc = taosArrayGet(px->pDataBlock, i);
       SColumnInfoData* pDst = taosArrayGet(pBlock->pDataBlock, i);
-
       // it is a reserved column for scalar function, and no data in this column yet.
       if (pSrc->pData == NULL) {
         continue;
       }
 
+      colInfoDataCleanup(pDst, pBlock->info.rows);
+
       int32_t numOfRows = 0;
       for (int32_t j = 0; j < totalRows; ++j) {
         if (rowRes[j] == 0) {