diff --git a/source/dnode/vnode/inc/vnode.h b/source/dnode/vnode/inc/vnode.h
index c4040644b1ea895d22f139bd7b9e1a473cfd60b6..99260ffefdd2a30c857c7e8675849246039936fc 100644
--- a/source/dnode/vnode/inc/vnode.h
+++ b/source/dnode/vnode/inc/vnode.h
@@ -174,7 +174,7 @@ int32_t tsdbReaderOpen(SVnode *pVnode, SQueryTableDataCond *pCond, void *pTableL
 void         tsdbReaderClose(STsdbReader *pReader);
 bool         tsdbNextDataBlock(STsdbReader *pReader);
 void         tsdbRetrieveDataBlockInfo(const STsdbReader *pReader, int32_t *rows, uint64_t *uid, STimeWindow *pWindow);
-int32_t      tsdbRetrieveDatablockSMA(STsdbReader *pReader, SColumnDataAgg ***pBlockSMA, bool *allHave);
+int32_t      tsdbRetrieveDatablockSMA(STsdbReader *pReader, SSDataBlock* pDataBlock, bool *allHave);
 SSDataBlock *tsdbRetrieveDataBlock(STsdbReader *pTsdbReadHandle, SArray *pColumnIdList);
 int32_t      tsdbReaderReset(STsdbReader *pReader, SQueryTableDataCond *pCond);
 int32_t      tsdbGetFileBlocksDistInfo(STsdbReader *pReader, STableBlockDistInfo *pTableBlockInfo);
diff --git a/source/dnode/vnode/src/tsdb/tsdbRead.c b/source/dnode/vnode/src/tsdb/tsdbRead.c
index a4581f54724a58ea93d6df69bbfe396c058e49a2..3ec4f63c30a931f294932386146f585a5207cbba 100644
--- a/source/dnode/vnode/src/tsdb/tsdbRead.c
+++ b/source/dnode/vnode/src/tsdb/tsdbRead.c
@@ -4112,8 +4112,9 @@ static void doFillNullColSMA(SBlockLoadSuppInfo* pSup, int32_t numOfRows, int32_
   }
 }
 
-int32_t tsdbRetrieveDatablockSMA(STsdbReader* pReader, SColumnDataAgg ***pBlockSMA, bool* allHave) {
+int32_t tsdbRetrieveDatablockSMA(STsdbReader* pReader, SSDataBlock* pDataBlock, bool* allHave) {
   int32_t code = 0;
+  SColumnDataAgg ***pBlockSMA = &pDataBlock->pBlockAgg;
   *allHave = false;
 
   if (pReader->type == TIMEWINDOW_RANGE_EXTERNAL) {
@@ -4161,6 +4162,12 @@ int32_t tsdbRetrieveDatablockSMA(STsdbReader* pReader, SColumnDataAgg ***pBlockS
   int32_t i = 0, j = 0;
   size_t  size = taosArrayGetSize(pSup->pColAgg);
 
+  // ensure capacity
+  if(pDataBlock->pDataBlock) {
+     size_t colsNum = taosArrayGetSize(pDataBlock->pDataBlock);
+     taosArrayEnsureCap(pSup->pColAgg, colsNum);
+  }
+
   SSDataBlock* pResBlock = pReader->pResBlock;
   if (pResBlock->pBlockAgg == NULL) {
     size_t num = taosArrayGetSize(pResBlock->pDataBlock);
diff --git a/source/libs/executor/src/scanoperator.c b/source/libs/executor/src/scanoperator.c
index 0f35d3778d83f2462e19d6253655287ce02f876d..eae2ff3c72f3889c7e2402481cf3d46b20c7e581 100644
--- a/source/libs/executor/src/scanoperator.c
+++ b/source/libs/executor/src/scanoperator.c
@@ -224,7 +224,7 @@ static bool doFilterByBlockSMA(SFilterInfo* pFilterInfo, SColumnDataAgg** pColsA
 
 static bool doLoadBlockSMA(STableScanBase* pTableScanInfo, SSDataBlock* pBlock, SExecTaskInfo* pTaskInfo) {
   bool    allColumnsHaveAgg = true;
-  int32_t code = tsdbRetrieveDatablockSMA(pTableScanInfo->dataReader, &pBlock->pBlockAgg, &allColumnsHaveAgg);
+  int32_t code = tsdbRetrieveDatablockSMA(pTableScanInfo->dataReader, pBlock, &allColumnsHaveAgg);
   if (code != TSDB_CODE_SUCCESS) {
     T_LONG_JMP(pTaskInfo->env, code);
   }