diff --git a/.github/config/muted_ya.txt b/.github/config/muted_ya.txt
index 4639c09e825f..9f02ab0b0967 100644
--- a/.github/config/muted_ya.txt
+++ b/.github/config/muted_ya.txt
@@ -27,6 +27,10 @@ ydb/core/kqp/ut/service KqpService.CloseSessionsWithLoad
 ydb/core/kqp/ut/service KqpQueryService.TableSink_OlapRWQueries
 ydb/core/kqp/ut/service KqpQueryService.TableSink_Htap
 ydb/core/kqp/ut/tx KqpSnapshotRead.ReadOnlyTxWithIndexCommitsOnConcurrentWrite+withSink
+ydb/core/kqp/ut/tx KqpSinkMvcc.OltpNamedStatement
+ydb/core/kqp/ut/tx KqpSinkMvcc.OlapNamedStatement
+ydb/core/kqp/ut/tx KqpSinkMvcc.OltpMultiSinks
+ydb/core/kqp/ut/tx KqpSinkMvcc.OlapMultiSinks
 ydb/core/persqueue/ut [*/*]*
 ydb/core/persqueue/ut TPQTest.*DirectRead*
 ydb/core/persqueue/ut/ut_with_sdk [*/*]*
diff --git a/ydb/core/kqp/opt/physical/effects/kqp_opt_phy_delete_index.cpp b/ydb/core/kqp/opt/physical/effects/kqp_opt_phy_delete_index.cpp
index 87cca8148424..aade00fdafd3 100644
--- a/ydb/core/kqp/opt/physical/effects/kqp_opt_phy_delete_index.cpp
+++ b/ydb/core/kqp/opt/physical/effects/kqp_opt_phy_delete_index.cpp
@@ -88,14 +88,18 @@ TExprBase KqpBuildDeleteIndexStages(TExprBase node, TExprContext& ctx, const TKq
     effects.emplace_back(tableDelete);
 
     for (const auto& [tableNode, indexDesc] : indexes) {
-        THashSet<TStringBuf> indexTableColumns;
+        THashSet<TStringBuf> indexTableColumnsSet;
+        TVector<TStringBuf> indexTableColumns;
 
         for (const auto& column : indexDesc->KeyColumns) {
-            YQL_ENSURE(indexTableColumns.emplace(column).second);
+            YQL_ENSURE(indexTableColumnsSet.emplace(column).second);
+            indexTableColumns.emplace_back(column);
         }
 
         for (const auto& column : pk) {
-            indexTableColumns.insert(column);
+            if (indexTableColumnsSet.insert(column).second) {
+                indexTableColumns.emplace_back(column);
+            }
         }
 
         auto deleteIndexKeys = MakeRowsFromDict(lookupDict.Cast(), pk, indexTableColumns, del.Pos(), ctx);
diff --git a/ydb/core/kqp/opt/physical/effects/kqp_opt_phy_effects_impl.h b/ydb/core/kqp/opt/physical/effects/kqp_opt_phy_effects_impl.h
index bbb42ef50236..c56ab9096fb4 100644
--- a/ydb/core/kqp/opt/physical/effects/kqp_opt_phy_effects_impl.h
+++ b/ydb/core/kqp/opt/physical/effects/kqp_opt_phy_effects_impl.h
@@ -62,11 +62,11 @@ NYql::NNodes::TCoLambda MakeRowsPayloadSelector(const NYql::NNodes::TCoAtomList&
     const NYql::TKikimrTableDescription& table, NYql::TPositionHandle pos, NYql::TExprContext& ctx);
 
 NYql::NNodes::TExprBase MakeRowsFromDict(const NYql::NNodes::TDqPhyPrecompute& dict, const TVector<TString>& dictKeys,
-    const THashSet<TStringBuf>& columns, NYql::TPositionHandle pos, NYql::TExprContext& ctx);
+    const TVector<TStringBuf>& columns, NYql::TPositionHandle pos, NYql::TExprContext& ctx);
 
 // Same as MakeRowsFromDict but skip rows which marked as non changed (true in second tuple)
 NYql::NNodes::TExprBase MakeRowsFromTupleDict(const NYql::NNodes::TDqPhyPrecompute& dict, const TVector<TString>& dictKeys,
-    const THashSet<TStringBuf>& columns, NYql::TPositionHandle pos, NYql::TExprContext& ctx);
+    const TVector<TStringBuf>& columns, NYql::TPositionHandle pos, NYql::TExprContext& ctx);
 
 NYql::NNodes::TMaybeNode<NYql::NNodes::TDqCnUnionAll> MakeConditionalInsertRows(const NYql::NNodes::TExprBase& input,
     const NYql::TKikimrTableDescription& table, const TMaybe<THashSet<TStringBuf>>& inputColumn, bool abortOnError,
diff --git a/ydb/core/kqp/opt/physical/effects/kqp_opt_phy_indexes.cpp b/ydb/core/kqp/opt/physical/effects/kqp_opt_phy_indexes.cpp
index 3bb2e9a50dc2..891ae7164183 100644
--- a/ydb/core/kqp/opt/physical/effects/kqp_opt_phy_indexes.cpp
+++ b/ydb/core/kqp/opt/physical/effects/kqp_opt_phy_indexes.cpp
@@ -238,7 +238,7 @@ TMaybeNode<TDqPhyPrecompute> PrecomputeTableLookupDict(const TDqPhyPrecompute& l
 }
 
 TExprBase MakeRowsFromDict(const TDqPhyPrecompute& dict, const TVector<TString>& dictKeys,
-    const THashSet<TStringBuf>& columns, TPositionHandle pos, TExprContext& ctx)
+    const TVector<TStringBuf>& columns, TPositionHandle pos, TExprContext& ctx)
 {
     THashSet<TString> dictKeysSet(dictKeys.begin(), dictKeys.end());
     auto dictTupleArg = TCoArgument(ctx.NewArgument(pos, "dict_tuple"));
@@ -296,7 +296,7 @@ TExprBase MakeRowsFromDict(const TDqPhyPrecompute& dict, const TVector<TString>&
 }
 
 TExprBase MakeRowsFromTupleDict(const TDqPhyPrecompute& dict, const TVector<TString>& dictKeys,
-    const THashSet<TStringBuf>& columns, TPositionHandle pos, TExprContext& ctx)
+    const TVector<TStringBuf>& columns, TPositionHandle pos, TExprContext& ctx)
 {
     THashSet<TString> dictKeysSet(dictKeys.begin(), dictKeys.end());
     auto dictTupleArg = TCoArgument(ctx.NewArgument(pos, "dict_tuple"));
diff --git a/ydb/core/kqp/opt/physical/effects/kqp_opt_phy_insert_index.cpp b/ydb/core/kqp/opt/physical/effects/kqp_opt_phy_insert_index.cpp
index 6553dc98514b..b158dbb9ab73 100644
--- a/ydb/core/kqp/opt/physical/effects/kqp_opt_phy_insert_index.cpp
+++ b/ydb/core/kqp/opt/physical/effects/kqp_opt_phy_insert_index.cpp
@@ -12,7 +12,7 @@ using namespace NYql::NNodes;
 namespace {
 
 TExprBase MakeInsertIndexRows(const TDqPhyPrecompute& inputRows, const TKikimrTableDescription& table,
-    const THashSet<TStringBuf>& inputColumns, const THashSet<TStringBuf>& indexColumns,
+    const THashSet<TStringBuf>& inputColumns, const TVector<TStringBuf>& indexColumns,
     TPositionHandle pos, TExprContext& ctx)
 {
     auto inputRowArg = TCoArgument(ctx.NewArgument(pos, "input_row"));
@@ -113,19 +113,24 @@ TExprBase KqpBuildInsertIndexStages(TExprBase node, TExprContext& ctx, const TKq
     effects.emplace_back(upsertTable);
 
     for (const auto& [tableNode, indexDesc] : indexes) {
-        THashSet<TStringBuf> indexTableColumns;
+        THashSet<TStringBuf> indexTableColumnsSet;
+        TVector<TStringBuf> indexTableColumns;
 
         for (const auto& column : indexDesc->KeyColumns) {
-            YQL_ENSURE(indexTableColumns.emplace(column).second);
+            YQL_ENSURE(indexTableColumnsSet.emplace(column).second);
+            indexTableColumns.emplace_back(column);
         }
 
         for (const auto& column : table.Metadata->KeyColumnNames) {
-            indexTableColumns.insert(column);
+            if (indexTableColumnsSet.insert(column).second) {
+                indexTableColumns.emplace_back(column);
+            }
         }
 
         for (const auto& column : indexDesc->DataColumns) {
             if (inputColumnsSet.contains(column)) {
-                YQL_ENSURE(indexTableColumns.emplace(column).second);
+                YQL_ENSURE(indexTableColumnsSet.emplace(column).second);
+                indexTableColumns.emplace_back(column);
             }
         }
 
diff --git a/ydb/core/kqp/opt/physical/effects/kqp_opt_phy_upsert_index.cpp b/ydb/core/kqp/opt/physical/effects/kqp_opt_phy_upsert_index.cpp
index 032bff0e69e9..6fa52f0e5cde 100644
--- a/ydb/core/kqp/opt/physical/effects/kqp_opt_phy_upsert_index.cpp
+++ b/ydb/core/kqp/opt/physical/effects/kqp_opt_phy_upsert_index.cpp
@@ -150,7 +150,7 @@ TExprBase MakeNonexistingRowsFilter(const TDqPhyPrecompute& inputRows, const TDq
 
 TExprBase MakeUpsertIndexRows(TKqpPhyUpsertIndexMode mode, const TDqPhyPrecompute& inputRows,
     const TDqPhyPrecompute& lookupDict, const THashSet<TStringBuf>& inputColumns,
-    const THashSet<TStringBuf>& indexColumns, const TKikimrTableDescription& table, TPositionHandle pos,
+    const TVector<TStringBuf>& indexColumns, const TKikimrTableDescription& table, TPositionHandle pos,
     TExprContext& ctx, bool opt)
 {
     // Check if we can update index table from just input data
@@ -686,9 +686,11 @@ TMaybeNode<TExprList> KqpPhyUpsertIndexEffectsImpl(TKqpPhyUpsertIndexMode mode,
 
     for (const auto& [tableNode, indexDesc] : indexes) {
         bool indexKeyColumnsUpdated = false;
-        THashSet<TStringBuf> indexTableColumns;
+        THashSet<TStringBuf> indexTableColumnsSet;
+        TVector<TStringBuf> indexTableColumns;
         for (const auto& column : indexDesc->KeyColumns) {
-            YQL_ENSURE(indexTableColumns.emplace(column).second);
+            YQL_ENSURE(indexTableColumnsSet.emplace(column).second);
+            indexTableColumns.emplace_back(column);
 
             if (mode == TKqpPhyUpsertIndexMode::UpdateOn && table.GetKeyColumnIndex(column)) {
                 // Table PK cannot be updated, so don't consider PK columns update as index update
@@ -701,7 +703,9 @@ TMaybeNode<TExprList> KqpPhyUpsertIndexEffectsImpl(TKqpPhyUpsertIndexMode mode,
         }
 
         for (const auto& column : pk) {
-            indexTableColumns.insert(column);
+            if (indexTableColumnsSet.insert(column).second) {
+                indexTableColumns.emplace_back(column);
+            }
         }
 
         auto indexTableColumnsWithoutData = indexTableColumns;
@@ -710,7 +714,8 @@ TMaybeNode<TExprList> KqpPhyUpsertIndexEffectsImpl(TKqpPhyUpsertIndexMode mode,
         bool optUpsert = true;
         for (const auto& column : indexDesc->DataColumns) {
             // TODO: Conder not fetching/updating data columns without input value.
-            YQL_ENSURE(indexTableColumns.emplace(column).second);
+            YQL_ENSURE(indexTableColumnsSet.emplace(column).second);
+            indexTableColumns.emplace_back(column);
 
             if (inputColumnsSet.contains(column)) {
                 indexDataColumnsUpdated = true;
diff --git a/ydb/core/kqp/opt/physical/kqp_opt_phy_helpers.cpp b/ydb/core/kqp/opt/physical/kqp_opt_phy_helpers.cpp
index 18a439af0c21..779788fbad9c 100644
--- a/ydb/core/kqp/opt/physical/kqp_opt_phy_helpers.cpp
+++ b/ydb/core/kqp/opt/physical/kqp_opt_phy_helpers.cpp
@@ -83,6 +83,10 @@ TCoAtomList BuildColumnsList(const THashSet<TStringBuf>& columns, TPositionHandl
     return BuildColumnsListImpl(columns, pos, ctx);
 }
 
+TCoAtomList BuildColumnsList(const TVector<TStringBuf>& columns, NYql::TPositionHandle pos,NYql::TExprContext& ctx) {
+    return BuildColumnsListImpl(columns, pos, ctx);
+}
+
 TCoAtomList BuildColumnsList(const TVector<TString>& columns, TPositionHandle pos, TExprContext& ctx) {
     return BuildColumnsListImpl(columns, pos, ctx);
 }
diff --git a/ydb/core/kqp/opt/physical/kqp_opt_phy_impl.h b/ydb/core/kqp/opt/physical/kqp_opt_phy_impl.h
index 0e22dbac8e4f..867694931fa9 100644
--- a/ydb/core/kqp/opt/physical/kqp_opt_phy_impl.h
+++ b/ydb/core/kqp/opt/physical/kqp_opt_phy_impl.h
@@ -19,6 +19,9 @@ NYql::NNodes::TMaybeNode<NYql::NNodes::TDqPhyPrecompute> BuildLookupKeysPrecompu
 NYql::NNodes::TCoAtomList BuildColumnsList(const THashSet<TStringBuf>& columns, NYql::TPositionHandle pos,
     NYql::TExprContext& ctx);
 
+NYql::NNodes::TCoAtomList BuildColumnsList(const TVector<TStringBuf>& columns, NYql::TPositionHandle pos,
+    NYql::TExprContext& ctx);
+
 NYql::NNodes::TCoAtomList BuildColumnsList(const TVector<TString>& columns, NYql::TPositionHandle pos,
     NYql::TExprContext& ctx);
 
diff --git a/ydb/core/kqp/ut/tx/kqp_sink_common.h b/ydb/core/kqp/ut/tx/kqp_sink_common.h
index 9dfcad60ed43..80dae769b18f 100644
--- a/ydb/core/kqp/ut/tx/kqp_sink_common.h
+++ b/ydb/core/kqp/ut/tx/kqp_sink_common.h
@@ -18,12 +18,13 @@ class TTableDataModificationTester {
     std::unique_ptr<TKikimrRunner> Kikimr;
     YDB_ACCESSOR(bool, IsOlap, false);
     YDB_ACCESSOR(bool, FastSnapshotExpiration, false);
+    YDB_ACCESSOR(bool, DisableSinks, false);
 
     virtual void DoExecute() = 0;
 public:
     void Execute() {
-        AppConfig.MutableTableServiceConfig()->SetEnableOlapSink(true);
-        AppConfig.MutableTableServiceConfig()->SetEnableOltpSink(true);
+        AppConfig.MutableTableServiceConfig()->SetEnableOlapSink(!DisableSinks);
+        AppConfig.MutableTableServiceConfig()->SetEnableOltpSink(!DisableSinks);
         AppConfig.MutableTableServiceConfig()->SetEnableKqpDataQueryStreamLookup(true);
         auto settings = TKikimrSettings().SetAppConfig(AppConfig).SetWithSampleTables(false);
         if (FastSnapshotExpiration) {
diff --git a/ydb/core/kqp/ut/tx/kqp_sink_mvcc_ut.cpp b/ydb/core/kqp/ut/tx/kqp_sink_mvcc_ut.cpp
index 159d8154a544..83a62f070faf 100644
--- a/ydb/core/kqp/ut/tx/kqp_sink_mvcc_ut.cpp
+++ b/ydb/core/kqp/ut/tx/kqp_sink_mvcc_ut.cpp
@@ -299,6 +299,95 @@ Y_UNIT_TEST_SUITE(KqpSinkMvcc) {
         tester.SetIsOlap(true);
         tester.Execute();
     }
+
+    class TNamedStatement : public TTableDataModificationTester {
+    protected:
+        void DoExecute() override {
+            auto client = Kikimr->GetQueryClient();
+
+            auto session1 = client.GetSession().GetValueSync().GetSession();
+
+            {
+                auto result = session1.ExecuteQuery(Q_(R"(
+                    $data = SELECT * FROM `/Root/KV`;
+                    DELETE FROM `/Root/KV` WHERE 1=1;
+                    SELECT COUNT(*) FROM `/Root/KV`;
+                    SELECT COUNT(*) FROM $data;
+                    DELETE FROM `/Root/KV` ON SELECT 424242u AS Key, "One" As Value;
+                    UPSERT INTO `/Root/KV` (Key, Value) VALUES (424242u, "One");
+                    SELECT COUNT(*) FROM `/Root/KV`;
+                    SELECT COUNT(*) FROM $data;
+                )"), TTxControl::BeginTx(TTxSettings::SerializableRW()).CommitTx()).ExtractValueSync();
+                UNIT_ASSERT_VALUES_EQUAL_C(result.GetStatus(), EStatus::SUCCESS, result.GetIssues().ToString());
+                CompareYson(R"([[0u]])", FormatResultSetYson(result.GetResultSet(0)));
+                CompareYson(R"([[0u]])", FormatResultSetYson(result.GetResultSet(1)));
+                CompareYson(R"([[1u]])", FormatResultSetYson(result.GetResultSet(2)));
+                CompareYson(R"([[1u]])", FormatResultSetYson(result.GetResultSet(3)));
+            }
+        }
+    };
+
+    Y_UNIT_TEST(OltpNamedStatementNoSink) {
+        TNamedStatement tester;
+        tester.SetDisableSinks(true);
+        tester.SetIsOlap(false);
+        tester.Execute();
+    }
+
+    Y_UNIT_TEST(OltpNamedStatement) {
+        TNamedStatement tester;
+        tester.SetIsOlap(false);
+        tester.Execute();
+    }
+
+    Y_UNIT_TEST(OlapNamedStatement) {
+        TNamedStatement tester;
+        tester.SetIsOlap(true);
+        tester.Execute();
+    }
+
+    class TMultiSinks: public TTableDataModificationTester {
+    protected:
+        void DoExecute() override {
+            auto client = Kikimr->GetQueryClient();
+
+            auto session1 = client.GetSession().GetValueSync().GetSession();
+
+            {
+                auto result = session1.ExecuteQuery(Q_(R"(
+                    UPSERT INTO `/Root/KV` (Key, Value) VALUES (1u, "1");
+                    UPSERT INTO `/Root/KV` (Key, Value) VALUES (1u, "2");
+                )"), TTxControl::BeginTx(TTxSettings::SerializableRW()).CommitTx()).ExtractValueSync();
+                UNIT_ASSERT_VALUES_EQUAL_C(result.GetStatus(), EStatus::SUCCESS, result.GetIssues().ToString());
+            }
+            {
+                auto result = session1.ExecuteQuery(Q_(R"(
+                    SELECT Value FROM `/Root/KV` WHERE Key = 1u;
+                )"), TTxControl::BeginTx(TTxSettings::SerializableRW()).CommitTx()).ExtractValueSync();
+                UNIT_ASSERT_VALUES_EQUAL_C(result.GetStatus(), EStatus::SUCCESS, result.GetIssues().ToString());
+                CompareYson(R"([[["2"]]])", FormatResultSetYson(result.GetResultSet(0)));
+            }
+        }
+    };
+
+    Y_UNIT_TEST(OltpMultiSinksNoSinks) {
+        TMultiSinks tester;
+        tester.SetDisableSinks(true);
+        tester.SetIsOlap(false);
+        tester.Execute();
+    }
+
+    Y_UNIT_TEST(OltpMultiSinks) {
+        TMultiSinks tester;
+        tester.SetIsOlap(false);
+        tester.Execute();
+    }
+
+    Y_UNIT_TEST(OlapMultiSinks) {
+        TMultiSinks tester;
+        tester.SetIsOlap(true);
+        tester.Execute();
+    }
 }
 
 } // namespace NKqp