diff --git a/include/libs/function/functionMgt.h b/include/libs/function/functionMgt.h
index 9d0995a8d8e6ae29ee488a5d38cb6d083c036075..e6512b5bac7dc14315e7d9f55c476c9879ebe6eb 100644
--- a/include/libs/function/functionMgt.h
+++ b/include/libs/function/functionMgt.h
@@ -125,6 +125,8 @@ typedef enum EFunctionType {
   // distributed splitting functions
   FUNCTION_TYPE_APERCENTILE_PARTIAL,
   FUNCTION_TYPE_APERCENTILE_MERGE,
+  FUNCTION_TYPE_SPREAD_PARTIAL,
+  FUNCTION_TYPE_SPREAD_MERGE,
 
   // user defined funcion
   FUNCTION_TYPE_UDF = 10000
diff --git a/source/libs/function/src/builtins.c b/source/libs/function/src/builtins.c
index 88259e2cbdde2dddbf57999f11a5c6fe9c2d1319..7897cc10c2f11aeff4209416e47c5195cedccd0d 100644
--- a/source/libs/function/src/builtins.c
+++ b/source/libs/function/src/builtins.c
@@ -1279,6 +1279,28 @@ const SBuiltinFuncDefinition funcMgtBuiltins[] = {
     .processFunc  = spreadFunction,
     .finalizeFunc = spreadFinalize
   },
+  {
+    .name = "_spread_partial",
+    .type = FUNCTION_TYPE_SPREAD_PARTIAL,
+    .classification = FUNC_MGT_AGG_FUNC,
+    .translateFunc = translateSpread,
+    .dataRequiredFunc = statisDataRequired,
+    .getEnvFunc   = getSpreadFuncEnv,
+    .initFunc     = spreadFunctionSetup,
+    .processFunc  = spreadFunction,
+    .finalizeFunc = spreadFinalize
+  },
+  {
+    .name = "_spread_merge",
+    .type = FUNCTION_TYPE_SPREAD_MERGE,
+    .classification = FUNC_MGT_AGG_FUNC,
+    .translateFunc = translateSpread,
+    .dataRequiredFunc = statisDataRequired,
+    .getEnvFunc   = getSpreadFuncEnv,
+    .initFunc     = spreadFunctionSetup,
+    .processFunc  = spreadFunction,
+    .finalizeFunc = spreadFinalize
+  },
   {
     .name = "elapsed",
     .type = FUNCTION_TYPE_ELAPSED,