diff --git a/include/libs/function/function.h b/include/libs/function/function.h
index 4ee0989118..78bd1d807b 100644
--- a/include/libs/function/function.h
+++ b/include/libs/function/function.h
@@ -185,6 +185,7 @@ typedef struct SFuncInputRow {
   TSKEY ts;
   bool isDataNull;
   char* pData;
+  char* pPk;
 
   SSDataBlock* block; // prev row block or src block
   int32_t rowIndex; // prev row block ? 0 : rowIndex in srcBlock
@@ -198,7 +199,8 @@ typedef struct SFuncInputRowIter {
   bool  hasPrev;
  
   SInputColumnInfoData* pInput;
-  SColumnInfoData* pData;
+  SColumnInfoData* pDataCol;
+  SColumnInfoData* pPkCol;
   TSKEY* tsList;
   int32_t rowIndex;
   int32_t inputEndIndex;
@@ -207,6 +209,7 @@ typedef struct SFuncInputRowIter {
   TSKEY prevBlockTsEnd;
   bool prevIsDataNull;
   char* pPrevData;
+  char* pPrevPk;
   SSDataBlock* pPrevRowBlock; // pre one row block
 
   //TODO:
diff --git a/include/libs/function/functionMgt.h b/include/libs/function/functionMgt.h
index f126bb587a..72e2815ade 100644
--- a/include/libs/function/functionMgt.h
+++ b/include/libs/function/functionMgt.h
@@ -256,7 +256,7 @@ typedef enum EFuncDataRequired {
 } EFuncDataRequired;
 
 EFuncDataRequired fmFuncDataRequired(SFunctionNode* pFunc, STimeWindow* pTimeWindow);
-EFuncDataRequired fmFuncDynDataRequired(int32_t funcId, void* pRes, STimeWindow* pTimeWindow);
+EFuncDataRequired fmFuncDynDataRequired(int32_t funcId, void* pRes, SDataBlockInfo* pBlockInfo);
 
 int32_t fmGetFuncExecFuncs(int32_t funcId, SFuncExecFuncs* pFpSet);
 int32_t fmGetScalarFuncExecFuncs(int32_t funcId, SScalarFuncExecFuncs* pFpSet);
diff --git a/source/common/src/tdatablock.c b/source/common/src/tdatablock.c
index 0d805cb8a4..d2164b024b 100644
--- a/source/common/src/tdatablock.c
+++ b/source/common/src/tdatablock.c
@@ -546,8 +546,8 @@ int32_t blockDataUpdatePkRange(SSDataBlock* pDataBlock, int32_t pkColumnIndex, b
     }
   } else {
     if (IS_NUMERIC_TYPE(pColInfoData->info.type)) {
-      pDataBlock->info.pks[0].val = *(int64_t*) ekey;
-      pDataBlock->info.pks[1].val = *(int64_t*) skey;
+      pDataBlock->info.pks[0].val = *(int32_t*) ekey;
+      pDataBlock->info.pks[1].val = *(int32_t*) skey;
     } else {  // todo refactor
       memcpy(pDataBlock->info.pks[0].pData, varDataVal(ekey), varDataLen(ekey));
       pDataBlock->info.pks[0].nData = varDataLen(ekey);
diff --git a/source/dnode/vnode/src/tsdb/tsdbRead2.c b/source/dnode/vnode/src/tsdb/tsdbRead2.c
index 6e134698b5..891fd823e7 100644
--- a/source/dnode/vnode/src/tsdb/tsdbRead2.c
+++ b/source/dnode/vnode/src/tsdb/tsdbRead2.c
@@ -141,7 +141,7 @@ static int32_t tGetPrimaryKeyIndex(uint8_t *p, SPrimaryKeyIndex *index) {
 }
 
 static void tRowGetKeyDeepCopy(SRow* pRow, SRowKey* pKey) {
-  pKey->ts = pKey->ts;
+  pKey->ts = pRow->ts;
   pKey->numOfPKs = pRow->numOfPKs;
   if (pKey->numOfPKs == 0) {
     return;
@@ -164,7 +164,7 @@ static void tRowGetKeyDeepCopy(SRow* pRow, SRowKey* pKey) {
       pKey->pks[i].pData = memcpy(pKey->pks[i].pData, data + indices[i].offset, pKey->pks[i].nData);
       pKey->pks[i].pData += pKey->pks[i].nData;
     } else {
-      pKey->pks[i].val = *(int64_t*) data + indices[i].offset;
+      pKey->pks[i].val = *(int64_t*) (data + indices[i].offset);
     }
   }
 }
@@ -694,7 +694,7 @@ static int32_t doLoadFileBlock(STsdbReader* pReader, SArray* pIndexList, SBlockN
       w.ekey = pScanInfo->lastProcKey.ts;
     }
 
-    if (/*isEmptyQueryTimeWindow(&w)*/ w.ekey - w.skey < 2) {  // NOTE: specialized for open interval
+    if (/*isEmptyQueryTimeWindow(&w)*/ w.ekey - w.skey < 1) {  // NOTE: specialized for open interval
       k += 1;
 
       if (k >= numOfTables) {
@@ -2012,41 +2012,58 @@ int32_t doInitMemDataIter(STsdbReader* pReader, STbData** pData, STableBlockScan
   return code;
 }
 
+static void doForwardDataIter(SRowKey* pKey, SIterInfo* pIter, STableBlockScanInfo* pBlockScanInfo, STsdbReader* pReader) {
+  SRowKey rowKey;
+
+  while (1) {
+    TSDBROW* pRow = getValidMemRow(pIter, pBlockScanInfo->delSkyline, pReader);
+    if (!pIter->hasVal) {
+      break;
+    }
+
+    tRowGetKeyEx(pRow, &rowKey);
+    int32_t ret = pkCompEx(pReader->pkComparFn, pKey, &rowKey);
+    if (ret == 0) {
+      pIter->hasVal = tsdbTbDataIterNext(pIter->iter);
+    } else {
+      break;
+    }
+  }
+}
+
+// handle the open interval issue. Find the first row key that is greater than the given one.
+static int32_t forwardDataIter(SRowKey* pKey, STableBlockScanInfo* pBlockScanInfo, STsdbReader* pReader) {
+  doForwardDataIter(pKey, &pBlockScanInfo->iter, pBlockScanInfo, pReader);
+  doForwardDataIter(pKey, &pBlockScanInfo->iiter, pBlockScanInfo, pReader);
+  return TSDB_CODE_SUCCESS;
+}
+
 static int32_t initMemDataIterator(STableBlockScanInfo* pBlockScanInfo, STsdbReader* pReader) {
+  STbData*       d = NULL;
+  STbData*       di = NULL;
+  bool           asc = ASCENDING_TRAVERSE(pReader->info.order);
+  STsdbReadSnap* pSnap = pReader->pReadSnap;
+
   if (pBlockScanInfo->iterInit) {
     return TSDB_CODE_SUCCESS;
   }
 
-  STbData*    d = NULL;
   STsdbRowKey startKey = {0};
-  if (ASCENDING_TRAVERSE(pReader->info.order)) {
-    startKey = (STsdbRowKey){.version = pReader->info.verRange.minVer,
-                             .key = {
-                                 .ts = pBlockScanInfo->lastProcKey.ts + 1,
-                                 .numOfPKs = pReader->suppInfo.numOfPks,
-                             }};
-  } else {
-    startKey = (STsdbRowKey){.version = pReader->info.verRange.maxVer,
-                             .key = {
-                                 .ts = pBlockScanInfo->lastProcKey.ts - 1,
-                                 .numOfPKs = pReader->suppInfo.numOfPks,
-                             }};
-  }
+  tRowKeyAssign(&startKey.key, &pBlockScanInfo->lastProcKey);
+  startKey.version = asc ? pReader->info.verRange.minVer : pReader->info.verRange.maxVer;
 
-  int32_t code =
-      doInitMemDataIter(pReader, &d, pBlockScanInfo, &startKey, pReader->pReadSnap->pMem, &pBlockScanInfo->iter, "mem");
+  int32_t code = doInitMemDataIter(pReader, &d, pBlockScanInfo, &startKey, pSnap->pMem, &pBlockScanInfo->iter, "mem");
   if (code != TSDB_CODE_SUCCESS) {
     return code;
   }
 
-  STbData* di = NULL;
-  code = doInitMemDataIter(pReader, &di, pBlockScanInfo, &startKey, pReader->pReadSnap->pIMem, &pBlockScanInfo->iiter,
-                           "imem");
+  code = doInitMemDataIter(pReader, &di, pBlockScanInfo, &startKey, pSnap->pIMem, &pBlockScanInfo->iiter, "imem");
   if (code != TSDB_CODE_SUCCESS) {
     return code;
   }
 
   loadMemTombData(&pBlockScanInfo->pMemDelData, d, di, pReader->info.verRange.maxVer);
+  forwardDataIter(&startKey.key, pBlockScanInfo, pReader);
 
   pBlockScanInfo->iterInit = true;
   return TSDB_CODE_SUCCESS;
@@ -4128,6 +4145,9 @@ int32_t tsdbReaderOpen2(void* pVnode, SQueryTableDataCond* pCond, void* pTableLi
     blockDataEnsureCapacity(pResBlock, capacity);
   }
 
+  // for debug purpose
+//  capacity = 7;
+
   int32_t code = tsdbReaderCreate(pVnode, pCond, ppReader, capacity, pResBlock, idstr);
   if (code != TSDB_CODE_SUCCESS) {
     goto _err;
@@ -4894,6 +4914,10 @@ SSDataBlock* tsdbRetrieveDataBlock2(STsdbReader* pReader, SArray* pIdList) {
 
   SReaderStatus* pStatus = &pTReader->status;
   if (pStatus->composedDataBlock || pReader->info.execMode == READER_EXEC_ROWS) {
+
+//    tsdbReaderSuspend2(pReader);
+//    tsdbReaderResume2(pReader);
+
     return pTReader->resBlockInfo.pResBlock;
   }
 
@@ -4904,6 +4928,7 @@ SSDataBlock* tsdbRetrieveDataBlock2(STsdbReader* pReader, SArray* pIdList) {
 
 //  tsdbReaderSuspend2(pReader);
 //  tsdbReaderResume2(pReader);
+
   return ret;
 }
 
diff --git a/source/dnode/vnode/src/tsdb/tsdbUtil.c b/source/dnode/vnode/src/tsdb/tsdbUtil.c
index fe7a3457bd..59452ebb9d 100644
--- a/source/dnode/vnode/src/tsdb/tsdbUtil.c
+++ b/source/dnode/vnode/src/tsdb/tsdbUtil.c
@@ -633,7 +633,7 @@ int32_t tRowKeyAssign(SRowKey *pDst, SRowKey* pSrc) {
   pDst->numOfPKs = pSrc->numOfPKs;
 
   if (pSrc->numOfPKs > 0) {
-    for (int32_t i = 0; i < pDst->numOfPKs; ++i) {
+    for (int32_t i = 0; i < pSrc->numOfPKs; ++i) {
       SValue *pVal = &pDst->pks[i];
       pVal->type = pSrc->pks[i].type;
 
diff --git a/source/libs/executor/src/scanoperator.c b/source/libs/executor/src/scanoperator.c
index 1e5fa065de..a51e627272 100644
--- a/source/libs/executor/src/scanoperator.c
+++ b/source/libs/executor/src/scanoperator.c
@@ -201,7 +201,7 @@ static int32_t doDynamicPruneDataBlock(SOperatorInfo* pOperator, SDataBlockInfo*
 
     SResultRowEntryInfo* pEntry = getResultEntryInfo(pRow, i, pTableScanInfo->base.pdInfo.pExprSup->rowEntryInfoOffset);
 
-    int32_t reqStatus = fmFuncDynDataRequired(functionId, pEntry, &pBlockInfo->window);
+    int32_t reqStatus = fmFuncDynDataRequired(functionId, pEntry, pBlockInfo);
     if (reqStatus != FUNC_DATA_REQUIRED_NOT_LOAD) {
       notLoadBlock = false;
       break;
diff --git a/source/libs/function/inc/builtins.h b/source/libs/function/inc/builtins.h
index 4c1e46dbba..af33c3ffa2 100644
--- a/source/libs/function/inc/builtins.h
+++ b/source/libs/function/inc/builtins.h
@@ -25,7 +25,7 @@ extern "C" {
 typedef int32_t (*FTranslateFunc)(SFunctionNode* pFunc, char* pErrBuf, int32_t len);
 typedef EFuncDataRequired (*FFuncDataRequired)(SFunctionNode* pFunc, STimeWindow* pTimeWindow);
 typedef int32_t (*FCreateMergeFuncParameters)(SNodeList* pRawParameters, SNode* pPartialRes, SNodeList** pParameters);
-typedef EFuncDataRequired (*FFuncDynDataRequired)(void* pRes, STimeWindow* pTimeWindow);
+typedef EFuncDataRequired (*FFuncDynDataRequired)(void* pRes, SDataBlockInfo* pBlocInfo);
 typedef EFuncReturnRows (*FEstimateReturnRows)(SFunctionNode* pFunc);
 
 typedef struct SBuiltinFuncDefinition {
diff --git a/source/libs/function/inc/builtinsimpl.h b/source/libs/function/inc/builtinsimpl.h
index ccb50ff2a8..54bcd26bc3 100644
--- a/source/libs/function/inc/builtinsimpl.h
+++ b/source/libs/function/inc/builtinsimpl.h
@@ -158,8 +158,8 @@ int32_t           firstLastPartialFinalize(SqlFunctionCtx* pCtx, SSDataBlock* pB
 int32_t           firstCombine(SqlFunctionCtx* pDestCtx, SqlFunctionCtx* pSourceCtx);
 int32_t           lastCombine(SqlFunctionCtx* pDestCtx, SqlFunctionCtx* pSourceCtx);
 int32_t           getFirstLastInfoSize(int32_t resBytes, int32_t pkBytes);
-EFuncDataRequired firstDynDataReq(void* pRes, STimeWindow* pTimeWindow);
-EFuncDataRequired lastDynDataReq(void* pRes, STimeWindow* pTimeWindow);
+EFuncDataRequired firstDynDataReq(void* pRes, SDataBlockInfo* pBlockInfo);
+EFuncDataRequired lastDynDataReq(void* pRes, SDataBlockInfo* pBlockInfo);
 
 int32_t lastRowFunction(SqlFunctionCtx* pCtx);
 
diff --git a/source/libs/function/src/builtinsimpl.c b/source/libs/function/src/builtinsimpl.c
index 097b263b8e..2907c096fe 100644
--- a/source/libs/function/src/builtinsimpl.c
+++ b/source/libs/function/src/builtinsimpl.c
@@ -424,7 +424,8 @@ int32_t funcInputUpdate(SqlFunctionCtx* pCtx) {
   if (!pCtx->bInputFinished) {
     pIter->pInput = &pCtx->input;
     pIter->tsList = (TSKEY*)pIter->pInput->pPTS->pData;
-    pIter->pData = pIter->pInput->pData[0];
+    pIter->pDataCol = pIter->pInput->pData[0];
+    pIter->pPkCol = pIter->pInput->pPrimaryKey;
     pIter->rowIndex = pIter->pInput->startRowIndex;
     pIter->inputEndIndex = pIter->rowIndex + pIter->pInput->numOfRows - 1;
     pIter->pSrcBlock = pCtx->pSrcBlock; 
@@ -454,10 +455,16 @@ bool funcInputGetNextRowDescPk(SFuncInputRowIter* pIter, SFuncInputRow* pRow) {
     if (pIter->prevBlockTsEnd == pIter->tsList[pIter->inputEndIndex]) {
       blockDataDestroy(pIter->pPrevRowBlock);
       pIter->pPrevRowBlock = blockDataExtractBlock(pIter->pSrcBlock, pIter->inputEndIndex, 1);
-      pIter->prevIsDataNull = colDataIsNull_f(pIter->pData->nullbitmap, pIter->inputEndIndex);
-      pIter->pPrevData = taosMemoryMalloc(pIter->pData->info.bytes);
-      char* srcData = colDataGetData(pIter->pData, pIter->inputEndIndex);
-      memcpy(pIter->pPrevData, srcData, pIter->pData->info.bytes);
+      pIter->prevIsDataNull = colDataIsNull_f(pIter->pDataCol->nullbitmap, pIter->inputEndIndex);
+
+      pIter->pPrevData = taosMemoryMalloc(pIter->pDataCol->info.bytes);
+      char* srcData = colDataGetData(pIter->pDataCol, pIter->inputEndIndex);
+      memcpy(pIter->pPrevData, srcData, pIter->pDataCol->info.bytes);
+
+      pIter->pPrevPk = taosMemoryMalloc(pIter->pPkCol->info.bytes);
+      char* pkData = colDataGetData(pIter->pPkCol, pIter->inputEndIndex);
+      memcpy(pIter->pPrevPk, pkData, pIter->pPkCol->info.bytes);
+
       pIter->pPrevRowBlock = blockDataExtractBlock(pIter->pSrcBlock, pIter->inputEndIndex, 1);
 
       pIter->hasPrev = true;
@@ -475,8 +482,9 @@ bool funcInputGetNextRowDescPk(SFuncInputRowIter* pIter, SFuncInputRow* pRow) {
         pRow->rowIndex = 0;
       } else {
         pRow->ts = pIter->tsList[idx - 1];
-        pRow->isDataNull = colDataIsNull_f(pIter->pData->nullbitmap, idx - 1);
-        pRow->pData = colDataGetData(pIter->pData, idx - 1);
+        pRow->isDataNull = colDataIsNull_f(pIter->pDataCol->nullbitmap, idx - 1);
+        pRow->pData = colDataGetData(pIter->pDataCol, idx - 1);
+        pRow->pPk = colDataGetData(pIter->pPkCol, idx - 1);
         pRow->block = pIter->pSrcBlock;
         pRow->rowIndex = idx - 1;
       }
@@ -492,20 +500,22 @@ bool funcInputGetNextRowDescPk(SFuncInputRowIter* pIter, SFuncInputRow* pRow) {
         ++idx;
       }
       pRow->ts = pIter->tsList[idx];
-      pRow->isDataNull = colDataIsNull_f(pIter->pData->nullbitmap, idx);
-      pRow->pData = colDataGetData(pIter->pData, pIter->rowIndex);
+      pRow->isDataNull = colDataIsNull_f(pIter->pDataCol->nullbitmap, idx);
+      pRow->pData = colDataGetData(pIter->pDataCol, idx);
+      pRow->pPk = colDataGetData(pIter->pPkCol, idx);
       pRow->block = pIter->pSrcBlock;
-      pRow->rowIndex = idx;
 
       pIter->rowIndex = idx + 1;
       return true;
     } else {
       pIter->hasPrev = true;
       pIter->prevBlockTsEnd = tsEnd;
-      // TODO
-      pIter->prevIsDataNull = colDataIsNull_f(pIter->pData->nullbitmap, pIter->inputEndIndex);
-      pIter->pPrevData = taosMemoryMalloc(pIter->pData->info.bytes);
-      memcpy(pIter->pPrevData, colDataGetData(pIter->pData, pIter->inputEndIndex), pIter->pData->info.bytes);
+      pIter->prevIsDataNull = colDataIsNull_f(pIter->pDataCol->nullbitmap, pIter->inputEndIndex);
+      pIter->pPrevData = taosMemoryMalloc(pIter->pDataCol->info.bytes);
+      memcpy(pIter->pPrevData, colDataGetData(pIter->pDataCol, pIter->inputEndIndex), pIter->pDataCol->info.bytes);
+      pIter->pPrevPk = taosMemoryMalloc(pIter->pPkCol->info.bytes);
+      memcpy(pIter->pPrevPk, colDataGetData(pIter->pPkCol, pIter->inputEndIndex), pIter->pPkCol->info.bytes);
+
       pIter->pPrevRowBlock = blockDataExtractBlock(pIter->pSrcBlock, pIter->inputEndIndex, 1);
       return false;
     }
@@ -523,8 +533,9 @@ bool funcInputGetNextRowAscPk(SFuncInputRowIter *pIter, SFuncInputRow* pRow) {
         ++idx;
       }
       pRow->ts = pIter->tsList[idx];
-      pRow->isDataNull = colDataIsNull_f(pIter->pData->nullbitmap, idx);
-      pRow->pData = colDataGetData(pIter->pData, idx);
+      pRow->isDataNull = colDataIsNull_f(pIter->pDataCol->nullbitmap, idx);
+      pRow->pData = colDataGetData(pIter->pDataCol, idx);
+      pRow->pPk = colDataGetData(pIter->pPkCol, idx);
       pRow->block = pIter->pSrcBlock;
       pRow->rowIndex = idx;
 
@@ -535,8 +546,9 @@ bool funcInputGetNextRowAscPk(SFuncInputRowIter *pIter, SFuncInputRow* pRow) {
   } else {
     if (pIter->rowIndex <= pIter->inputEndIndex) { 
       pRow->ts = pIter->tsList[pIter->rowIndex];
-      pRow->isDataNull = colDataIsNull_f(pIter->pData->nullbitmap, pIter->rowIndex);
-      pRow->pData = colDataGetData(pIter->pData, pIter->rowIndex);
+      pRow->isDataNull = colDataIsNull_f(pIter->pDataCol->nullbitmap, pIter->rowIndex);
+      pRow->pData = colDataGetData(pIter->pDataCol, pIter->rowIndex);
+      pRow->pPk = colDataGetData(pIter->pPkCol, pIter->rowIndex);
       pRow->block = pIter->pSrcBlock;
       pRow->rowIndex = pIter->rowIndex;
 
@@ -563,8 +575,9 @@ bool funcInputGetNextRowAscPk(SFuncInputRowIter *pIter, SFuncInputRow* pRow) {
 bool funcInputGetNextRowNoPk(SFuncInputRowIter *pIter, SFuncInputRow* pRow) {
   if (pIter->rowIndex <= pIter->inputEndIndex) {
     pRow->ts = pIter->tsList[pIter->rowIndex];
-    pRow->isDataNull = colDataIsNull_f(pIter->pData->nullbitmap, pIter->rowIndex);
-    pRow->pData = colDataGetData(pIter->pData, pIter->rowIndex);
+    pRow->isDataNull = colDataIsNull_f(pIter->pDataCol->nullbitmap, pIter->rowIndex);
+    pRow->pData = colDataGetData(pIter->pDataCol, pIter->rowIndex);
+    pRow->pPk = NULL;
     pRow->block = pIter->pSrcBlock;
     pRow->rowIndex = pIter->rowIndex;
 
@@ -2290,7 +2303,31 @@ int32_t apercentileCombine(SqlFunctionCtx* pDestCtx, SqlFunctionCtx* pSourceCtx)
   return TSDB_CODE_SUCCESS;
 }
 
-EFuncDataRequired firstDynDataReq(void* pRes, STimeWindow* pTimeWindow) {
+// TODO: change this function when block data info pks changed
+static int32_t comparePkDataWithSValue(int8_t pkType, char* pkData, SValue* pVal, int32_t order) {
+  char numVal[8] = {0};
+  switch (pkType) {
+    case TSDB_DATA_TYPE_INT:
+      *(int32_t*)numVal = (int32_t)pVal->val;
+      break;
+    case TSDB_DATA_TYPE_UINT:
+      *(uint32_t*)numVal = (uint32_t)pVal->val;
+      break;
+    case TSDB_DATA_TYPE_BIGINT:
+      *(int64_t*)numVal = (int64_t)pVal->val;
+      break;
+    case TSDB_DATA_TYPE_UBIGINT:
+      *(uint64_t*)numVal = (uint64_t)pVal->val;
+      break;
+    default:
+      break;
+  }
+  char*         blockData = (IS_NUMERIC_TYPE(pkType)) ? (char*) numVal : (char*)pVal->pData;
+  __compar_fn_t fn = getKeyComparFunc(pkType, order);
+  return fn(pkData, blockData);
+}
+
+EFuncDataRequired firstDynDataReq(void* pRes, SDataBlockInfo* pBlockInfo) {
   SResultRowEntryInfo* pEntry = (SResultRowEntryInfo*)pRes;
 
   // not initialized yet, data is required
@@ -2299,14 +2336,21 @@ EFuncDataRequired firstDynDataReq(void* pRes, STimeWindow* pTimeWindow) {
   }
 
   SFirstLastRes* pResult = GET_ROWCELL_INTERBUF(pEntry);
-  if (pResult->hasResult && pResult->ts <= pTimeWindow->skey) {
-    return FUNC_DATA_REQUIRED_NOT_LOAD;
+  if (pResult->hasResult) {
+    if (pResult->ts < pBlockInfo->window.skey) {
+      return FUNC_DATA_REQUIRED_NOT_LOAD;
+    } else if (pResult->ts == pBlockInfo->window.skey && pResult->pkData) {
+      if (comparePkDataWithSValue(pResult->pkType, pResult->pkData, pBlockInfo->pks + 0, TSDB_ORDER_ASC) < 0) {
+        return FUNC_DATA_REQUIRED_NOT_LOAD;
+      }
+    }
+    return FUNC_DATA_REQUIRED_DATA_LOAD;
   } else {
     return FUNC_DATA_REQUIRED_DATA_LOAD;
   }
 }
 
-EFuncDataRequired lastDynDataReq(void* pRes, STimeWindow* pTimeWindow) {
+EFuncDataRequired lastDynDataReq(void* pRes, SDataBlockInfo* pBlockInfo) {
   SResultRowEntryInfo* pEntry = (SResultRowEntryInfo*)pRes;
 
   // not initialized yet, data is required
@@ -2315,8 +2359,15 @@ EFuncDataRequired lastDynDataReq(void* pRes, STimeWindow* pTimeWindow) {
   }
 
   SFirstLastRes* pResult = GET_ROWCELL_INTERBUF(pEntry);
-  if (pResult->hasResult && pResult->ts >= pTimeWindow->ekey) {
-    return FUNC_DATA_REQUIRED_NOT_LOAD;
+  if (pResult->hasResult) {
+    if (pResult->ts > pBlockInfo->window.ekey) {
+      return FUNC_DATA_REQUIRED_NOT_LOAD;
+    } else if (pResult->ts == pBlockInfo->window.ekey && pResult->pkData) {
+      if (comparePkDataWithSValue(pResult->pkType, pResult->pkData, pBlockInfo->pks + 1, TSDB_ORDER_DESC) < 0) {
+        return FUNC_DATA_REQUIRED_NOT_LOAD;
+      }
+    }
+    return FUNC_DATA_REQUIRED_DATA_LOAD;
   } else {
     return FUNC_DATA_REQUIRED_DATA_LOAD;
   }
diff --git a/source/libs/function/src/functionMgt.c b/source/libs/function/src/functionMgt.c
index ae3958647b..697efb63fd 100644
--- a/source/libs/function/src/functionMgt.c
+++ b/source/libs/function/src/functionMgt.c
@@ -115,7 +115,7 @@ EFuncDataRequired fmFuncDataRequired(SFunctionNode* pFunc, STimeWindow* pTimeWin
   return funcMgtBuiltins[pFunc->funcId].dataRequiredFunc(pFunc, pTimeWindow);
 }
 
-EFuncDataRequired fmFuncDynDataRequired(int32_t funcId, void* pRes, STimeWindow* pTimeWindow) {
+EFuncDataRequired fmFuncDynDataRequired(int32_t funcId, void* pRes, SDataBlockInfo* pBlockInfo) {
   if (fmIsUserDefinedFunc(funcId) || funcId < 0 || funcId >= funcMgtBuiltinsNum) {
     return TSDB_CODE_FAILED;
   }
@@ -128,7 +128,7 @@ EFuncDataRequired fmFuncDynDataRequired(int32_t funcId, void* pRes, STimeWindow*
   if (funcMgtBuiltins[funcId].dynDataRequiredFunc == NULL) {
     return FUNC_DATA_REQUIRED_DATA_LOAD;
   } else {
-    return funcMgtBuiltins[funcId].dynDataRequiredFunc(pRes, pTimeWindow);
+    return funcMgtBuiltins[funcId].dynDataRequiredFunc(pRes, pBlockInfo);
   }
 }