diff --git a/nds/nds_validate.py b/nds/nds_validate.py
index ea478d0..e78152d 100644
--- a/nds/nds_validate.py
+++ b/nds/nds_validate.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 #
-# SPDX-FileCopyrightText: Copyright (c) 2022 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+# SPDX-FileCopyrightText: Copyright (c) 2022-2023 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
 # SPDX-License-Identifier: Apache-2.0
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -43,7 +43,7 @@
 from pyspark.sql.types import *
 from pyspark.sql.functions import col
 
-from nds_power import gen_sql_from_stream
+from nds_power import gen_sql_from_stream, get_query_subset
 
 def compare_results(spark_session: SparkSession,
                     input1: str,
@@ -335,8 +335,17 @@ def update_summary(prefix, unmatch_queries):
                         ' checks when the input data is float for some queries.')
     parser.add_argument('--json_summary_folder',
                         help='path of a folder that contains json summary file for each query.')
+    parser.add_argument('--sub_queries',
+                        type=lambda s: [x.strip() for x in s.split(',')],
+                        help='comma separated list of queries to compare. If not specified, all queries ' +
+                        'in the stream file will be compared. e.g. "query1,query2,query3". Note, use ' +
+                        '"_part1" and "_part2" suffix for the following query names: ' +
+                        'query14, query23, query24, query39. e.g. query14_part1, query39_part2')
     args = parser.parse_args()
     query_dict = gen_sql_from_stream(args.query_stream_file)
+    # if set sub_queries, only compare the specified queries
+    if args.sub_queries:
+        query_dict = get_query_subset(query_dict, args.sub_queries)
     session_builder = SparkSession.builder.appName("Validate Query Output").getOrCreate()
     unmatch_queries = iterate_queries(session_builder,
                                       args.input1,