[DQ] Fix YtDqProcessWrite with aux columns in YT emulation mode (#9400)

Author: rvu1024

ydb/library/yql/providers/yt/gateway/file/yql_yt_file.cpp

@@ -453,7 +453,7 @@ class TYtFileGateway : public IYtGateway {
         auto pos = options.Pos();
         try {
             TSession* session = GetSession(options);
-            
+
             TSet<TString> uniqueTables;
             const auto fullPrefix = options.Prefix().Empty() ? TString() : (options.Prefix() + '/');
             const auto fullSuffix = options.Suffix().Empty() ? TString() : ('/' + options.Suffix());
@@ -776,7 +776,7 @@ class TYtFileGateway : public IYtGateway {
             writer.SetSpecs(spec);
 
             TStringStream err;
-            auto type = BuildType(*tableInfo.RowSpec->GetType(), typeBuilder, err);
+            auto type = BuildType(*tableInfo.RowSpec->GetExtendedType(ctx), typeBuilder, err);
             TValuePacker packer(true, type);
             for (auto& c: content) {
                 auto val = packer.Unpack(c, holderFactory);

ydb/library/yql/providers/yt/provider/yql_yt_datasink_exec.cpp

@@ -13,6 +13,7 @@
 #include <ydb/library/yql/providers/yt/provider/yql_yt_helpers.h>
 #include <ydb/library/yql/providers/common/provider/yql_provider.h>
 #include <ydb/library/yql/providers/common/transform/yql_exec.h>
+#include <ydb/library/yql/providers/common/schema/expr/yql_expr_schema.h>
 #include <ydb/library/yql/core/type_ann/type_ann_expr.h>
 #include <ydb/library/yql/core/yql_execution.h>
 #include <ydb/library/yql/core/yql_graph_transformer.h>
@@ -742,7 +743,7 @@ class TYtDataSinkExecTransformer : public TExecTransformerBase {
                 NYT::TNode spec;
                 rowSpec.FillCodecNode(spec[YqlRowSpecAttribute]);
                 outSpec = NYT::TNode::CreateMap()(TString{YqlIOSpecTables}, NYT::TNode::CreateList().Add(spec));
-                type = rowSpec.GetTypeNode();
+                type = NCommon::TypeToYsonNode(rowSpec.GetExtendedType(ctx));
             }
 
             // These settings will be passed to YT peephole callback from DQ