diff --git a/ydb/core/kqp/opt/physical/kqp_opt_phy_build_stage.cpp b/ydb/core/kqp/opt/physical/kqp_opt_phy_build_stage.cpp
index 74cba669f5ae..3c8cbd9c8531 100644
--- a/ydb/core/kqp/opt/physical/kqp_opt_phy_build_stage.cpp
+++ b/ydb/core/kqp/opt/physical/kqp_opt_phy_build_stage.cpp
@@ -744,6 +744,10 @@ NYql::NNodes::TExprBase KqpBuildStreamIdxLookupJoinStages(NYql::NNodes::TExprBas
 
     const auto& idxLookupJoin = node.Cast<TKqlIndexLookupJoin>();
 
+    if (!idxLookupJoin.Input().Maybe<TDqCnUnionAll>()) {
+        return node;
+    }
+
     return Build<TDqCnUnionAll>(ctx, node.Pos())
         .Output()
             .Stage<TDqStage>()
diff --git a/ydb/core/kqp/ut/join/kqp_join_order_ut.cpp b/ydb/core/kqp/ut/join/kqp_join_order_ut.cpp
index a3167ef544ce..ac341172146f 100644
--- a/ydb/core/kqp/ut/join/kqp_join_order_ut.cpp
+++ b/ydb/core/kqp/ut/join/kqp_join_order_ut.cpp
@@ -724,7 +724,7 @@ create table `/Root/test/ds/store_sales`
 
 }
 
-static TKikimrRunner GetKikimrWithJoinSettings(){
+static TKikimrRunner GetKikimrWithJoinSettings(bool useStreamLookupJoin = false){
     TVector<NKikimrKqp::TKqpSetting> settings;
 
     NKikimrKqp::TKqpSetting setting;
@@ -741,7 +741,10 @@ static TKikimrRunner GetKikimrWithJoinSettings(){
     //setting.SetValue("grace");
     //settings.push_back(setting);
 
-    return TKikimrRunner(settings);
+    NKikimrConfig::TAppConfig appConfig;
+    appConfig.MutableTableServiceConfig()->SetEnableKqpDataQueryStreamIdxLookupJoin(useStreamLookupJoin);
+    auto serverSettings = TKikimrSettings().SetAppConfig(appConfig);
+    return TKikimrRunner(serverSettings);
 }
 
 class TChainConstructor {
@@ -811,9 +814,9 @@ Y_UNIT_TEST_SUITE(KqpJoinOrder) {
         chain.JoinTables();
     }
 
-    Y_UNIT_TEST(FiveWayJoin) {
+    Y_UNIT_TEST_TWIN(FiveWayJoin, StreamLookupJoin) {
 
-        auto kikimr = GetKikimrWithJoinSettings();
+        auto kikimr = GetKikimrWithJoinSettings(StreamLookupJoin);
         auto db = kikimr.GetTableClient();
         auto session = db.CreateSession().GetValueSync().GetSession();
 
@@ -848,9 +851,9 @@ Y_UNIT_TEST_SUITE(KqpJoinOrder) {
         }
     }
 
-    Y_UNIT_TEST(FourWayJoinLeftFirst) {
+    Y_UNIT_TEST_TWIN(FourWayJoinLeftFirst, StreamLookupJoin) {
 
-        auto kikimr = GetKikimrWithJoinSettings();
+        auto kikimr = GetKikimrWithJoinSettings(StreamLookupJoin);
         auto db = kikimr.GetTableClient();
         auto session = db.CreateSession().GetValueSync().GetSession();
 
@@ -885,9 +888,9 @@ Y_UNIT_TEST_SUITE(KqpJoinOrder) {
         }
     }
 
-     Y_UNIT_TEST(FiveWayJoinWithPreds) {
+     Y_UNIT_TEST_TWIN(FiveWayJoinWithPreds, StreamLookupJoin) {
 
-        auto kikimr = GetKikimrWithJoinSettings();
+        auto kikimr = GetKikimrWithJoinSettings(StreamLookupJoin);
         auto db = kikimr.GetTableClient();
         auto session = db.CreateSession().GetValueSync().GetSession();
 
@@ -923,9 +926,9 @@ Y_UNIT_TEST_SUITE(KqpJoinOrder) {
         }
     }
 
-    Y_UNIT_TEST(FiveWayJoinWithComplexPreds) {
+    Y_UNIT_TEST_TWIN(FiveWayJoinWithComplexPreds, StreamLookupJoin) {
 
-        auto kikimr = GetKikimrWithJoinSettings();
+        auto kikimr = GetKikimrWithJoinSettings(StreamLookupJoin);
         auto db = kikimr.GetTableClient();
         auto session = db.CreateSession().GetValueSync().GetSession();
 
@@ -961,9 +964,9 @@ Y_UNIT_TEST_SUITE(KqpJoinOrder) {
         }
     }
 
-    Y_UNIT_TEST(FiveWayJoinWithComplexPreds2) {
+    Y_UNIT_TEST_TWIN(FiveWayJoinWithComplexPreds2, StreamLookupJoin) {
 
-        auto kikimr = GetKikimrWithJoinSettings();
+        auto kikimr = GetKikimrWithJoinSettings(StreamLookupJoin);
         auto db = kikimr.GetTableClient();
         auto session = db.CreateSession().GetValueSync().GetSession();
 
@@ -999,9 +1002,9 @@ Y_UNIT_TEST_SUITE(KqpJoinOrder) {
         }
     }
 
-    Y_UNIT_TEST(FiveWayJoinWithPredsAndEquiv) {
+    Y_UNIT_TEST_TWIN(FiveWayJoinWithPredsAndEquiv, StreamLookupJoin) {
 
-        auto kikimr = GetKikimrWithJoinSettings();
+        auto kikimr = GetKikimrWithJoinSettings(StreamLookupJoin);
         auto db = kikimr.GetTableClient();
         auto session = db.CreateSession().GetValueSync().GetSession();
 
@@ -1037,9 +1040,9 @@ Y_UNIT_TEST_SUITE(KqpJoinOrder) {
         }
     }
 
-    Y_UNIT_TEST(FourWayJoinWithPredsAndEquivAndLeft) {
+    Y_UNIT_TEST_TWIN(FourWayJoinWithPredsAndEquivAndLeft, StreamLookupJoin) {
 
-        auto kikimr = GetKikimrWithJoinSettings();
+        auto kikimr = GetKikimrWithJoinSettings(StreamLookupJoin);
         auto db = kikimr.GetTableClient();
         auto session = db.CreateSession().GetValueSync().GetSession();
 
@@ -1075,9 +1078,9 @@ Y_UNIT_TEST_SUITE(KqpJoinOrder) {
         }
     }
 
-    Y_UNIT_TEST(FiveWayJoinWithConstantFold) {
+    Y_UNIT_TEST_TWIN(FiveWayJoinWithConstantFold, StreamLookupJoin) {
 
-        auto kikimr = GetKikimrWithJoinSettings();
+        auto kikimr = GetKikimrWithJoinSettings(StreamLookupJoin);
         auto db = kikimr.GetTableClient();
         auto session = db.CreateSession().GetValueSync().GetSession();
 
@@ -1113,9 +1116,9 @@ Y_UNIT_TEST_SUITE(KqpJoinOrder) {
         }
     }
 
-    Y_UNIT_TEST(FiveWayJoinWithConstantFoldOpt) {
+    Y_UNIT_TEST_TWIN(FiveWayJoinWithConstantFoldOpt, StreamLookupJoin) {
 
-        auto kikimr = GetKikimrWithJoinSettings();
+        auto kikimr = GetKikimrWithJoinSettings(StreamLookupJoin);
         auto db = kikimr.GetTableClient();
         auto session = db.CreateSession().GetValueSync().GetSession();
 
@@ -1151,9 +1154,9 @@ Y_UNIT_TEST_SUITE(KqpJoinOrder) {
         }
     }
 
-    Y_UNIT_TEST(DatetimeConstantFold) {
+    Y_UNIT_TEST_TWIN(DatetimeConstantFold, StreamLookupJoin) {
 
-        auto kikimr = GetKikimrWithJoinSettings();
+        auto kikimr = GetKikimrWithJoinSettings(StreamLookupJoin);
         auto db = kikimr.GetTableClient();
         auto session = db.CreateSession().GetValueSync().GetSession();
 
@@ -1177,9 +1180,9 @@ Y_UNIT_TEST_SUITE(KqpJoinOrder) {
         }
     }
 
-    Y_UNIT_TEST(TPCH2) {
+    Y_UNIT_TEST_TWIN(TPCH2, StreamLookupJoin) {
 
-        auto kikimr = GetKikimrWithJoinSettings();
+        auto kikimr = GetKikimrWithJoinSettings(StreamLookupJoin);
         auto db = kikimr.GetTableClient();
         auto session = db.CreateSession().GetValueSync().GetSession();
 
@@ -1268,9 +1271,9 @@ limit 100;
         }
     }
 
-    Y_UNIT_TEST(TPCH9) {
+    Y_UNIT_TEST_TWIN(TPCH9, StreamLookupJoin) {
 
-        auto kikimr = GetKikimrWithJoinSettings();
+        auto kikimr = GetKikimrWithJoinSettings(StreamLookupJoin);
         auto db = kikimr.GetTableClient();
         auto session = db.CreateSession().GetValueSync().GetSession();
 
@@ -1346,9 +1349,9 @@ order by
         }
     }
 
-    Y_UNIT_TEST(TPCH3) {
+    Y_UNIT_TEST_TWIN(TPCH3, StreamLookupJoin) {
 
-        auto kikimr = GetKikimrWithJoinSettings();
+        auto kikimr = GetKikimrWithJoinSettings(StreamLookupJoin);
         auto db = kikimr.GetTableClient();
         auto session = db.CreateSession().GetValueSync().GetSession();
 
@@ -1419,9 +1422,9 @@ limit 10;
         }
     }
 
-    Y_UNIT_TEST(TPCH21) {
+    Y_UNIT_TEST_TWIN(TPCH21, StreamLookupJoin) {
 
-        auto kikimr = GetKikimrWithJoinSettings();
+        auto kikimr = GetKikimrWithJoinSettings(StreamLookupJoin);
         auto db = kikimr.GetTableClient();
         auto session = db.CreateSession().GetValueSync().GetSession();
 
@@ -1489,9 +1492,9 @@ limit 100;)");
         }
     }
 
-       Y_UNIT_TEST(TPCH5) {
+       Y_UNIT_TEST_TWIN(TPCH5, StreamLookupJoin) {
 
-        auto kikimr = GetKikimrWithJoinSettings();
+        auto kikimr = GetKikimrWithJoinSettings(StreamLookupJoin);
         auto db = kikimr.GetTableClient();
         auto session = db.CreateSession().GetValueSync().GetSession();
 
@@ -1614,9 +1617,9 @@ order by
         }
     }
 
-    Y_UNIT_TEST(TPCH10) {
+    Y_UNIT_TEST_TWIN(TPCH10, StreamLookupJoin) {
 
-        auto kikimr = GetKikimrWithJoinSettings();
+        auto kikimr = GetKikimrWithJoinSettings(StreamLookupJoin);
         auto db = kikimr.GetTableClient();
         auto session = db.CreateSession().GetValueSync().GetSession();
 
@@ -1724,9 +1727,9 @@ limit 20;
         }
     }
 
-    Y_UNIT_TEST(TPCH11) {
+    Y_UNIT_TEST_TWIN(TPCH11, StreamLookupJoin) {
 
-        auto kikimr = GetKikimrWithJoinSettings();
+        auto kikimr = GetKikimrWithJoinSettings(StreamLookupJoin);
         auto db = kikimr.GetTableClient();
         auto session = db.CreateSession().GetValueSync().GetSession();
 
@@ -1807,9 +1810,9 @@ order by
         }        
     }
 
-    Y_UNIT_TEST(TPCDS16) {
+    Y_UNIT_TEST_TWIN(TPCDS16, StreamLookupJoin) {
 
-        auto kikimr = GetKikimrWithJoinSettings();
+        auto kikimr = GetKikimrWithJoinSettings(StreamLookupJoin);
         auto db = kikimr.GetTableClient();
         auto session = db.CreateSession().GetValueSync().GetSession();
 
@@ -1863,9 +1866,9 @@ limit 100;
         }        
     }
 
-    Y_UNIT_TEST(TPCDS61) {
+    Y_UNIT_TEST_TWIN(TPCDS61, StreamLookupJoin) {
 
-        auto kikimr = GetKikimrWithJoinSettings();
+        auto kikimr = GetKikimrWithJoinSettings(StreamLookupJoin);
         auto db = kikimr.GetTableClient();
         auto session = db.CreateSession().GetValueSync().GetSession();
 
@@ -1931,9 +1934,9 @@ limit 100;
         }        
     }
     
-    Y_UNIT_TEST(TPCDS92) {
+    Y_UNIT_TEST_TWIN(TPCDS92, StreamLookupJoin) {
 
-        auto kikimr = GetKikimrWithJoinSettings();
+        auto kikimr = GetKikimrWithJoinSettings(StreamLookupJoin);
         auto db = kikimr.GetTableClient();
         auto session = db.CreateSession().GetValueSync().GetSession();
 
@@ -1989,9 +1992,9 @@ limit 100;
         }        
     }
 
-    Y_UNIT_TEST(TPCDS94) {
+    Y_UNIT_TEST_TWIN(TPCDS94, StreamLookupJoin) {
 
-        auto kikimr = GetKikimrWithJoinSettings();
+        auto kikimr = GetKikimrWithJoinSettings(StreamLookupJoin);
         auto db = kikimr.GetTableClient();
         auto session = db.CreateSession().GetValueSync().GetSession();
 
@@ -2042,9 +2045,9 @@ limit 100;
         }        
     }
 
-    Y_UNIT_TEST(TPCDS95) {
+    Y_UNIT_TEST_TWIN(TPCDS95, StreamLookupJoin) {
 
-        auto kikimr = GetKikimrWithJoinSettings();
+        auto kikimr = GetKikimrWithJoinSettings(StreamLookupJoin);
         auto db = kikimr.GetTableClient();
         auto session = db.CreateSession().GetValueSync().GetSession();
 
@@ -2097,9 +2100,9 @@ limit 100;
         }        
     }
 
-    Y_UNIT_TEST(TPCDS96) {
+    Y_UNIT_TEST_TWIN(TPCDS96, StreamLookupJoin) {
 
-        auto kikimr = GetKikimrWithJoinSettings();
+        auto kikimr = GetKikimrWithJoinSettings(StreamLookupJoin);
         auto db = kikimr.GetTableClient();
         auto session = db.CreateSession().GetValueSync().GetSession();
 
@@ -2136,9 +2139,9 @@ limit 100;
         }        
     }
 
-    Y_UNIT_TEST(TPCDS88) {
+    Y_UNIT_TEST_TWIN(TPCDS88, StreamLookupJoin) {
 
-        auto kikimr = GetKikimrWithJoinSettings();
+        auto kikimr = GetKikimrWithJoinSettings(StreamLookupJoin);
         auto db = kikimr.GetTableClient();
         auto session = db.CreateSession().GetValueSync().GetSession();
 
@@ -2253,9 +2256,9 @@ from
         }        
     }
 
-    Y_UNIT_TEST(TPCDS90) {
+    Y_UNIT_TEST_TWIN(TPCDS90, StreamLookupJoin) {
 
-        auto kikimr = GetKikimrWithJoinSettings();
+        auto kikimr = GetKikimrWithJoinSettings(StreamLookupJoin);
         auto db = kikimr.GetTableClient();
         auto session = db.CreateSession().GetValueSync().GetSession();
 
diff --git a/ydb/library/yql/dq/type_ann/dq_type_ann.cpp b/ydb/library/yql/dq/type_ann/dq_type_ann.cpp
index f3867b4e9010..0df76f8b32de 100644
--- a/ydb/library/yql/dq/type_ann/dq_type_ann.cpp
+++ b/ydb/library/yql/dq/type_ann/dq_type_ann.cpp
@@ -778,7 +778,23 @@ TStatus AnnotateDqReplicate(const TExprNode::TPtr& input, TExprContext& ctx) {
     if (!EnsurePersistableType(replicateInput->Pos(), *inputItemType, ctx)) {
         return TStatus::Error;
     }
-    if (!EnsureStructType(replicateInput->Pos(), *inputItemType, ctx)) {
+
+    if (inputItemType->GetKind() == ETypeAnnotationKind::Tuple) {
+        if (!EnsureTupleTypeSize(replicateInput->Pos(), inputItemType, 2, ctx)) {
+            return TStatus::Error;
+        }
+
+        auto inputTupleType = inputItemType->Cast<TTupleExprType>();
+        if (!EnsureStructType(replicateInput->Pos(), *inputTupleType->GetItems()[0], ctx)) {
+            return TStatus::Error;
+        }
+
+        bool isOptional = false;
+        const TStructExprType* structType = nullptr;
+        if (!EnsureStructOrOptionalStructType(replicateInput->Pos(), *inputTupleType->GetItems()[1], isOptional, structType, ctx)) {
+            return TStatus::Error;
+        }
+    } else if (!EnsureStructType(replicateInput->Pos(), *inputItemType, ctx)) {
         return TStatus::Error;
     }
     const TTypeAnnotationNode* lambdaInputFlowType = ctx.MakeType<TFlowExprType>(inputItemType);