From a5728ba92f2c1f803f932f9153aa2c264f8ee313 Mon Sep 17 00:00:00 2001
From: Pisarenko Grigoriy <grigoriypisar@ydb.tech>
Date: Tue, 18 Nov 2025 17:32:30 +0300
Subject: [PATCH] Fixed empty sys view without user token

---
 .../federated_query/datastreams/datastreams_ut.cpp | 14 ++++++++++++++
 .../streaming_queries/streaming_queries.cpp        |  5 ++++-
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/ydb/core/kqp/ut/federated_query/datastreams/datastreams_ut.cpp b/ydb/core/kqp/ut/federated_query/datastreams/datastreams_ut.cpp
index 727eae125666..0c5bbb533087 100644
--- a/ydb/core/kqp/ut/federated_query/datastreams/datastreams_ut.cpp
+++ b/ydb/core/kqp/ut/federated_query/datastreams/datastreams_ut.cpp
@@ -3388,6 +3388,20 @@ Y_UNIT_TEST_SUITE(KqpStreamingQueriesSysView) {
         }, "Path = '/Root/C'");
     }
 
+    Y_UNIT_TEST_F(ReadWithoutAuth, TStreamingSysViewTestFixture) {
+        QueryClientSettings = TClientSettings();
+        Setup();
+
+        StartQuery("A");
+        StartQuery("B");
+        StartQuery("C");
+        Sleep(STATS_WAIT_DURATION);
+
+        CheckSysView({
+            {"A"}, {"B"}, {"C"}
+        });
+    }
+
     Y_UNIT_TEST_F(SortOrderForSysView, TStreamingSysViewTestFixture) {
         Setup();
 
diff --git a/ydb/core/sys_view/streaming_queries/streaming_queries.cpp b/ydb/core/sys_view/streaming_queries/streaming_queries.cpp
index 5fa6fdabd020..590363841565 100644
--- a/ydb/core/sys_view/streaming_queries/streaming_queries.cpp
+++ b/ydb/core/sys_view/streaming_queries/streaming_queries.cpp
@@ -285,7 +285,10 @@ class TSchemeDescribeActorBase : public TActorBootstrapped<TDerived> {
 
         auto request = std::make_unique<NSchemeCache::TSchemeCacheNavigate>();
         request->DatabaseName = Database;
-        request->UserToken = UserToken;
+
+        if (UserToken && UserToken->GetSanitizedToken()) {
+            request->UserToken = UserToken;
+        }
 
         request->ResultSet.reserve(Paths.size());
         for (const auto& path : Paths) {