diff --git a/src/sql/engine/expr/ob_expr_json_query.cpp b/src/sql/engine/expr/ob_expr_json_query.cpp
index a8faf92274..cbb3b38fa5 100644
--- a/src/sql/engine/expr/ob_expr_json_query.cpp
+++ b/src/sql/engine/expr/ob_expr_json_query.cpp
@@ -824,6 +824,7 @@ int ObExprJsonQuery::deal_item_method_special_case(ObJsonPath* j_path,
   INIT_SUCC(ret);
   if (hits[pos]->json_type() == ObJsonNodeType::J_NULL && !hits[pos]->is_real_json_null(hits[pos])) {
     is_null_result = true;
+  } else if (!j_path->is_last_func()) { // do nothing
   } else if (!use_wrapper && j_path->is_last_func() && j_path->path_node_cnt() == 1) { // do nothing
   } else if (j_path->get_last_node_type() == JPN_LENGTH && !(hits[pos]->json_type() == ObJsonNodeType::J_UINT
             && ((ObJsonUint *)hits[pos])->get_is_string_length())) { // distinct uint and length()
diff --git a/src/sql/engine/expr/ob_expr_json_utils.cpp b/src/sql/engine/expr/ob_expr_json_utils.cpp
index 58e7aaacc5..dc9d3bc19c 100644
--- a/src/sql/engine/expr/ob_expr_json_utils.cpp
+++ b/src/sql/engine/expr/ob_expr_json_utils.cpp
@@ -3105,8 +3105,14 @@ int ObJsonUtil::get_query_item_method_null_option(ObJsonPath* j_path,
 {
   size_t item_method = static_cast<uint8_t>(j_path->get_last_node_type());
   size_t json_type = static_cast<uint8_t>(j_base->json_type());
+  int is_null_res = 0;
   // first item method pos is JPN_ABS
-  return OB_JSON_QUERY_ITEM_METHOD_NULL_OPTION[item_method - ObJsonPathNodeType::JPN_ABS][json_type];
+  if (!j_path->is_last_func()) {
+    // do nothing
+  } else {
+    is_null_res = OB_JSON_QUERY_ITEM_METHOD_NULL_OPTION[item_method - ObJsonPathNodeType::JPN_ABS][json_type];
+  }
+  return is_null_res;
 }
 
 ObJsonUtil::ObItemMethodValid ObJsonUtil::get_item_method_cast_res_func(ObJsonPath* j_path,