diff --git a/source/libs/function/src/tudf.c b/source/libs/function/src/tudf.c
index 73bb56a509198712859483b131528b2f150576e5..cf9dc15aa8311620f3c534e6e870efeb41d7ed23 100644
--- a/source/libs/function/src/tudf.c
+++ b/source/libs/function/src/tudf.c
@@ -1253,8 +1253,8 @@ bool udfAggInit(struct SqlFunctionCtx *pCtx, struct SResultRowEntryInfo* pResult
   if (callUdfAggInit(handle, &buf) != 0) {
     return false;
   }
-  memcpy(udfRes->interResBuf, buf.buf, buf.bufLen);
   udfRes->interResNum = buf.numOfResult;
+  memcpy(udfRes->interResBuf, buf.buf, buf.bufLen);
   return true;
 }
 
@@ -1263,14 +1263,14 @@ int32_t udfAggProcess(struct SqlFunctionCtx *pCtx) {
   SInputColumnInfoData* pInput = &pCtx->input;
   int32_t numOfCols = pInput->numOfInputCols;
 
-  char* udfRes = GET_ROWCELL_INTERBUF(GET_RES_INFO(pCtx));
-
+  SUdfAggRes* udfRes = (SUdfAggRes *)GET_ROWCELL_INTERBUF(GET_RES_INFO(pCtx));
+  SUdfUvSession *session = udfRes->session;
+  udfRes->finalResBuf = (char*)udfRes + sizeof(SUdfAggRes);
+  udfRes->interResBuf = (char*)udfRes + sizeof(SUdfAggRes) + session->outputLen;
 
   int32_t start = pInput->startRowIndex;
   int32_t numOfRows = pInput->numOfRows;
 
-  UdfcFuncHandle handle =(UdfcFuncHandle)(*(int64_t*)(udfRes));
-  SUdfUvSession *session = (SUdfUvSession *)handle;
 
   SSDataBlock tempBlock = {0};
   tempBlock.info.numOfCols = numOfCols;
@@ -1290,16 +1290,20 @@ int32_t udfAggProcess(struct SqlFunctionCtx *pCtx) {
 
   SSDataBlock *inputBlock = blockDataExtractBlock(&tempBlock, start, numOfRows);
 
-  SUdfInterBuf state = {.buf = udfRes + sizeof(int64_t) + session->outputLen,
+  SUdfInterBuf state = {.buf = udfRes->interResBuf,
                         .bufLen = session->bufSize,
-                        .numOfResult = GET_RES_INFO(pCtx)->numOfRes};
+                        .numOfResult = udfRes->interResNum};
   SUdfInterBuf newState = {0};
 
-  callUdfAggProcess(handle, inputBlock, &state, &newState);
+  callUdfAggProcess(session, inputBlock, &state, &newState);
 
-  memcpy(state.buf, newState.buf, newState.bufLen);
+  udfRes->interResNum = newState.numOfResult;
+  memcpy(udfRes->interResBuf, newState.buf, newState.bufLen);
+
+  if (newState.numOfResult == 1 || state.numOfResult == 1) {
+    GET_RES_INFO(pCtx)->numOfRes = 1;
+  }
 
-  GET_RES_INFO(pCtx)->numOfRes = (newState.numOfResult == 1 ? 1 : 0);
   blockDataDestroy(inputBlock);
 
   taosArrayDestroy(tempBlock.pDataBlock);
@@ -1309,22 +1313,26 @@ int32_t udfAggProcess(struct SqlFunctionCtx *pCtx) {
 }
 
 int32_t udfAggFinalize(struct SqlFunctionCtx *pCtx, SSDataBlock* pBlock) {
-  char* udfRes = GET_ROWCELL_INTERBUF(GET_RES_INFO(pCtx));
+  SUdfAggRes* udfRes = (SUdfAggRes *)GET_ROWCELL_INTERBUF(GET_RES_INFO(pCtx));
+  SUdfUvSession *session = udfRes->session;
+  udfRes->finalResBuf = (char*)udfRes + sizeof(SUdfAggRes);
+  udfRes->interResBuf = (char*)udfRes + sizeof(SUdfAggRes) + session->outputLen;
 
-  UdfcFuncHandle handle =(UdfcFuncHandle)(*(int64_t*)(udfRes));
-  SUdfUvSession *session = (SUdfUvSession *)handle;
 
-  SUdfInterBuf resultBuf = {.buf = udfRes + sizeof(int64_t),
-                            .bufLen = session->outputLen};
-  SUdfInterBuf state = {.buf = udfRes + sizeof(int64_t) + session->outputLen,
+  SUdfInterBuf resultBuf = {.buf = udfRes->finalResBuf,
+                            .bufLen = session->outputLen,
+                            .numOfResult = udfRes->finalResNum};
+  SUdfInterBuf state = {.buf = udfRes->interResBuf,
                         .bufLen = session->bufSize,
-                        .numOfResult = GET_RES_INFO(pCtx)->numOfRes};
-  callUdfAggFinalize(handle, &state, &resultBuf);
+                        .numOfResult = udfRes->interResNum};
+  callUdfAggFinalize(session, &state, &resultBuf);
+  teardownUdf(session);
 
-  GET_RES_INFO(pCtx)->numOfRes = (resultBuf.numOfResult == 1 ? 1 : 0);
+  if (resultBuf.numOfResult == 1) {
+    GET_RES_INFO(pCtx)->numOfRes = 1;
+  }
   functionFinalize(pCtx, pBlock);
 
-  teardownUdf(handle);
 
   return 0;
 }
\ No newline at end of file