default value has been disabled for column tables (ydb-platform#16088)

Author: dorooleg

ydb/core/kqp/host/kqp_gateway_proxy.cpp

@@ -439,6 +439,18 @@ bool FillColumnTableSchema(NKikimrSchemeOp::TColumnTableSchema& schema, const T&
         auto columnIt = metadata.Columns.find(name);
         Y_ENSURE(columnIt != metadata.Columns.end());
 
+        if (columnIt->second.IsDefaultFromLiteral()) {
+            code = Ydb::StatusIds::BAD_REQUEST;
+            error = TStringBuilder() << "Default values are not supported in column tables";
+            return false;
+        }
+
+        if (columnIt->second.IsDefaultFromSequence()) {
+            code = Ydb::StatusIds::BAD_REQUEST;
+            error = TStringBuilder() << "Default sequences are not supported in column tables";
+            return false;
+        }
+
         NKikimrSchemeOp::TOlapColumnDescription& columnDesc = *schema.AddColumns();
         columnDesc.SetName(columnIt->second.Name);
         columnDesc.SetType(columnIt->second.Type);

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

@@ -3387,5 +3387,26 @@ Y_UNIT_TEST_SUITE(KqpOlap) {
 
         testHelper.ReadData("SELECT COUNT(*) FROM `/Root/ColumnTableTest` WHERE time > CurrentUtcTimestamp()", "[[1u]]");
     }
+
+    Y_UNIT_TEST(WithDefaultValue) {
+        std::unique_ptr<TKikimrRunner> Kikimr;
+        auto settings = TKikimrSettings().SetWithSampleTables(false);
+        auto kikimr = std::make_unique<TKikimrRunner>(settings);
+        Tests::NCommon::TLoggerInit(*kikimr).Initialize();
+        auto queryClient = kikimr->GetQueryClient();
+        {
+            auto result = queryClient.ExecuteQuery(R"(
+                CREATE TABLE Test (
+                    Id Uint32 not null,
+                    Value String DEFAULT "aba",
+                    PRIMARY KEY (Id)
+                ) WITH (
+                    STORE = COLUMN
+                );
+            )", NQuery::TTxControl::NoTx()).GetValueSync();
+            UNIT_ASSERT_VALUES_EQUAL(result.GetStatus(), NYdb::EStatus::GENERIC_ERROR);
+            UNIT_ASSERT_STRING_CONTAINS_C(result.GetIssues().ToString(), "Default values are not supported in column tables", result.GetIssues().ToString());
+        }
+    }
 }
 }

ydb/core/ydb_convert/table_description.cpp

@@ -740,6 +740,18 @@ bool FillColumnDescriptionImpl(TColumnTable& out, const google::protobuf::Repeat
         if (!column.Getfamily().empty()) {
             columnDesc->SetColumnFamilyName(column.Getfamily());
         }
+
+        if (column.has_from_literal()) {
+            status = Ydb::StatusIds::BAD_REQUEST;
+            error = TStringBuilder() << "Default values are not supported in column tables";
+            return false;
+        }
+
+        if (column.has_from_sequence()) {
+            status = Ydb::StatusIds::BAD_REQUEST;
+            error = TStringBuilder() << "Default sequences are not supported in column tables";
+            return false;
+        }
     }
 
     return true;