diff --git a/source/dnode/vnode/src/tsdb/tsdbRead.c b/source/dnode/vnode/src/tsdb/tsdbRead.c
index ca877f599f7e052a842a186964a0b6961ca150f0..f94dbc51d159fe6850fa71c5a8578e04ff19e085 100644
--- a/source/dnode/vnode/src/tsdb/tsdbRead.c
+++ b/source/dnode/vnode/src/tsdb/tsdbRead.c
@@ -1631,7 +1631,7 @@ static int32_t doMergeBufAndFileRows(STsdbReader* pReader, STableBlockScanInfo*
       }
 
       code = doMergeRowsInBuf(pIter, pBlockScanInfo->uid, k.ts, pBlockScanInfo->delSkyline, &merge, pReader);
-      if (code != TSDB_CODE_SUCCESS) {
+      if (code != TSDB_CODE_SUCCESS || merge.pTSchema == NULL) {
         return code;
       }
     }
@@ -3768,6 +3768,15 @@ bool tsdbNextDataBlock(STsdbReader* pReader) {
   return false;
 }
 
+bool tsdbTableNextDataBlock(STsdbReader* pReader, uint64_t uid) {
+  void* pBlockScanInfo = taosHashGet(pReader->status.pTableMap, &uid, sizeof(uid));
+  if (pBlockScanInfo == NULL) { // no data block for the table of given uid
+    return false;
+  }
+
+
+}
+
 static void setBlockInfo(STsdbReader* pReader, SDataBlockInfo* pDataBlockInfo) {
   ASSERT(pDataBlockInfo != NULL && pReader != NULL);
   pDataBlockInfo->rows = pReader->pResBlock->info.rows;
diff --git a/source/libs/executor/src/cachescanoperator.c b/source/libs/executor/src/cachescanoperator.c
index 22a685230a12d4981a3b0729ef1f11b6504688d4..914da422adf3c3d656e07323dd27a26f8b7c03be 100644
--- a/source/libs/executor/src/cachescanoperator.c
+++ b/source/libs/executor/src/cachescanoperator.c
@@ -279,7 +279,7 @@ int32_t removeRedundantTsCol(SLastRowScanPhysiNode* pScanNode, SColMatchInfo* pC
   }
 
   size_t size = taosArrayGetSize(pColMatchInfo->pList);
-  SArray* pMatchInfo = taosArrayInit(size, sizeof(SColMatchInfo));
+  SArray* pMatchInfo = taosArrayInit(size, sizeof(SColMatchItem));
 
   for (int32_t i = 0; i < size; ++i) {
     SColMatchItem* pColInfo = taosArrayGet(pColMatchInfo->pList, i);
diff --git a/source/libs/executor/src/executil.c b/source/libs/executor/src/executil.c
index f58c2a0e344c56b120c4585fb1af23308a58cbcb..971b28eb09d3f3de5ba888925af061ebe285de40 100644
--- a/source/libs/executor/src/executil.c
+++ b/source/libs/executor/src/executil.c
@@ -1073,7 +1073,7 @@ int32_t extractColMatchInfo(SNodeList* pNodeList, SDataBlockDescNode* pOutputNod
 
   pMatchInfo->matchType = type;
 
-  SArray* pList = taosArrayInit(numOfCols, sizeof(SColMatchInfo));
+  SArray* pList = taosArrayInit(numOfCols, sizeof(SColMatchItem));
   if (pList == NULL) {
     code = TSDB_CODE_OUT_OF_MEMORY;
     return code;