diff --git a/source/libs/function/inc/builtinsimpl.h b/source/libs/function/inc/builtinsimpl.h
index a8eccb57e9d42a038cf9382305db143c40ff35b3..cac86be91752575feba4dcb016eddd84564389d1 100644
--- a/source/libs/function/inc/builtinsimpl.h
+++ b/source/libs/function/inc/builtinsimpl.h
@@ -84,9 +84,9 @@ int32_t diffFunction(SqlFunctionCtx *pCtx);
 
 bool getFirstLastFuncEnv(struct SFunctionNode* pFunc, SFuncExecEnv* pEnv);
 int32_t firstFunction(SqlFunctionCtx *pCtx);
-int32_t firstCombine(SqlFunctionCtx* pDestCtx, SqlFunctionCtx* pSourceCtx);
 int32_t lastFunction(SqlFunctionCtx *pCtx);
-int32_t lastFinalize(SqlFunctionCtx* pCtx, SSDataBlock* pBlock);
+int32_t firstLastFinalize(SqlFunctionCtx* pCtx, SSDataBlock* pBlock);
+int32_t firstCombine(SqlFunctionCtx* pDestCtx, SqlFunctionCtx* pSourceCtx);
 int32_t lastCombine(SqlFunctionCtx* pDestCtx, SqlFunctionCtx* pSourceCtx);
 
 bool getTopBotFuncEnv(SFunctionNode* UNUSED_PARAM(pFunc), SFuncExecEnv* pEnv);
diff --git a/source/libs/function/src/builtins.c b/source/libs/function/src/builtins.c
index 8914dca639c0c1c21bacb923860ef69a66e1deb8..d3bea535d47170700824c2f7cae096cb9a987212 100644
--- a/source/libs/function/src/builtins.c
+++ b/source/libs/function/src/builtins.c
@@ -1063,7 +1063,7 @@ const SBuiltinFuncDefinition funcMgtBuiltins[] = {
     .getEnvFunc   = getFirstLastFuncEnv,
     .initFunc     = functionSetup,
     .processFunc  = firstFunction,
-    .finalizeFunc = functionFinalize,
+    .finalizeFunc = firstLastFinalize,
     .combineFunc = firstCombine,
   },
   {
@@ -1074,7 +1074,7 @@ const SBuiltinFuncDefinition funcMgtBuiltins[] = {
     .getEnvFunc   = getFirstLastFuncEnv,
     .initFunc     = functionSetup,
     .processFunc  = lastFunction,
-    .finalizeFunc = lastFinalize,
+    .finalizeFunc = firstLastFinalize,
     .combineFunc  = lastCombine,
   },
   {
diff --git a/source/libs/function/src/builtinsimpl.c b/source/libs/function/src/builtinsimpl.c
index fe5737220b5cdeb57820562cc70d68956c05d339..e273ba4cb121fd530fc89597979c3ab34adf4a9c 100644
--- a/source/libs/function/src/builtinsimpl.c
+++ b/source/libs/function/src/builtinsimpl.c
@@ -2219,7 +2219,7 @@ int32_t lastFunction(SqlFunctionCtx* pCtx) {
   return TSDB_CODE_SUCCESS;
 }
 
-int32_t lastFinalize(SqlFunctionCtx* pCtx, SSDataBlock* pBlock) {
+int32_t firstLastFinalize(SqlFunctionCtx* pCtx, SSDataBlock* pBlock) {
   int32_t          slotId = pCtx->pExpr->base.resSchema.slotId;
   SColumnInfoData* pCol = taosArrayGet(pBlock->pDataBlock, slotId);