diff --git a/include/libs/scalar/scalar.h b/include/libs/scalar/scalar.h
index 5cbe380234..34b455379e 100644
--- a/include/libs/scalar/scalar.h
+++ b/include/libs/scalar/scalar.h
@@ -111,6 +111,7 @@ int32_t derivativeScalarFunction(SScalarParam *pInput, int32_t inputNum, SScalar
 int32_t irateScalarFunction(SScalarParam *pInput, int32_t inputNum, SScalarParam *pOutput);
 int32_t twaScalarFunction(SScalarParam *pInput, int32_t inputNum, SScalarParam *pOutput);
 int32_t mavgScalarFunction(SScalarParam *pInput, int32_t inputNum, SScalarParam *pOutput);
+int32_t hllScalarFunction(SScalarParam *pInput, int32_t inputNum, SScalarParam *pOutput);
 
 #ifdef __cplusplus
 }
diff --git a/source/libs/function/src/builtins.c b/source/libs/function/src/builtins.c
index 31776610b6..6f31448360 100644
--- a/source/libs/function/src/builtins.c
+++ b/source/libs/function/src/builtins.c
@@ -2369,6 +2369,7 @@ const SBuiltinFuncDefinition funcMgtBuiltins[] = {
     .getEnvFunc   = getHLLFuncEnv,
     .initFunc     = functionSetup,
     .processFunc  = hllFunction,
+    .sprocessFunc = hllScalarFunction,
     .finalizeFunc = hllFinalize,
     .invertFunc   = NULL,
     .combineFunc  = hllCombine,
@@ -2463,7 +2464,7 @@ const SBuiltinFuncDefinition funcMgtBuiltins[] = {
   {
     .name = "tail",
     .type = FUNCTION_TYPE_TAIL,
-    .classification = FUNC_MGT_SELECT_FUNC | FUNC_MGT_INDEFINITE_ROWS_FUNC | FUNC_MGT_TIMELINE_FUNC | FUNC_MGT_FORBID_STREAM_FUNC | 
+    .classification = FUNC_MGT_SELECT_FUNC | FUNC_MGT_INDEFINITE_ROWS_FUNC | FUNC_MGT_TIMELINE_FUNC | FUNC_MGT_FORBID_STREAM_FUNC |
                       FUNC_MGT_IMPLICIT_TS_FUNC,
     .translateFunc = translateTail,
     .getEnvFunc   = getTailFuncEnv,
@@ -2474,7 +2475,7 @@ const SBuiltinFuncDefinition funcMgtBuiltins[] = {
   {
     .name = "unique",
     .type = FUNCTION_TYPE_UNIQUE,
-    .classification = FUNC_MGT_SELECT_FUNC | FUNC_MGT_INDEFINITE_ROWS_FUNC | FUNC_MGT_TIMELINE_FUNC | 
+    .classification = FUNC_MGT_SELECT_FUNC | FUNC_MGT_INDEFINITE_ROWS_FUNC | FUNC_MGT_TIMELINE_FUNC |
                       FUNC_MGT_FORBID_STREAM_FUNC | FUNC_MGT_IMPLICIT_TS_FUNC,
     .translateFunc = translateUnique,
     .getEnvFunc   = getUniqueFuncEnv,
diff --git a/source/libs/scalar/src/sclfunc.c b/source/libs/scalar/src/sclfunc.c
index 9687528136..1442b5b5b5 100644
--- a/source/libs/scalar/src/sclfunc.c
+++ b/source/libs/scalar/src/sclfunc.c
@@ -2421,3 +2421,7 @@ int32_t twaScalarFunction(SScalarParam *pInput, int32_t inputNum, SScalarParam *
 int32_t mavgScalarFunction(SScalarParam *pInput, int32_t inputNum, SScalarParam *pOutput) {
   return avgScalarFunction(pInput, inputNum, pOutput);
 }
+
+int32_t hllScalarFunction(SScalarParam *pInput, int32_t inputNum, SScalarParam *pOutput) {
+  return countScalarFunction(pInput, inputNum, pOutput);
+}