Fix multi sink type annotation (#6105)

Author: nikvas0

ydb/core/kqp/ut/olap/kqp_olap_ut.cpp

@@ -2623,6 +2623,41 @@ Y_UNIT_TEST_SUITE(KqpOlap) {
 
     }
 
+    Y_UNIT_TEST(MultiInsertWithSinks) {
+        NKikimrConfig::TAppConfig appConfig;
+        appConfig.MutableTableServiceConfig()->SetEnableOlapSink(true);
+        auto settings = TKikimrSettings()
+            .SetAppConfig(appConfig)
+            .SetWithSampleTables(false);
+        TKikimrRunner kikimr(settings);
+
+        TLocalHelper(kikimr).CreateTestOlapTable();
+
+        auto db = kikimr.GetQueryClient();
+
+        auto result = db.ExecuteQuery(R"(
+            INSERT INTO `/Root/olapStore/olapTable` (timestamp, uid, resource_id) VALUES (Timestamp('1970-01-01T00:00:00Z'), 'a', '0');
+            INSERT INTO `/Root/olapStore/olapTable` (timestamp, uid, resource_id) VALUES (Timestamp('1970-01-01T00:00:01Z'), 'b', 't');
+            INSERT INTO `/Root/olapStore/olapTable` (timestamp, uid, resource_id) VALUES (Timestamp('1970-01-01T00:00:02Z'), 'c', 'test');
+        )", NYdb::NQuery::TTxControl::BeginTx().CommitTx()).ExtractValueSync();
+
+        UNIT_ASSERT_C(result.IsSuccess(), result.GetIssues().ToString());
+
+        {
+            auto it = db.StreamExecuteQuery(R"(
+                --!syntax_v1
+
+                SELECT
+                    *
+                FROM `/Root/olapStore/olapTable` ORDER BY uid
+            )", NYdb::NQuery::TTxControl::BeginTx().CommitTx()).GetValueSync();
+
+            UNIT_ASSERT_C(it.IsSuccess(), it.GetIssues().ToString());
+            TString result = StreamResultToYson(it);
+            CompareYson(result, R"([[#;#;["0"];0u;"a"];[#;#;["t"];1000000u;"b"];[#;#;["test"];2000000u;"c"]])");
+        }
+    }
+
 }
 
 }

ydb/library/yql/dq/type_ann/dq_type_ann.cpp

@@ -270,9 +270,6 @@ TStatus AnnotateStage(const TExprNode::TPtr& stage, TExprContext& ctx) {
         }
 
         if (!sinks.empty()) {
-            for (auto sink : sinks) {
-                sink->SetTypeAnn(resultType);
-            }
             stageResultTypes.assign(programResultTypesTuple.begin(), programResultTypesTuple.end());
         } else {
             for (auto transform : transforms) {