Hi @vitlibar,
In http implementation, ClickHouse will return format of query result in header `X-ClickHouse-Format`. Can we return format in gRPC response as well? This helps client like JDBC driver for deserialization(without the need for parsing the query).
{
            writer.Write(result, getCallbackPtr(callback));
        }
        void writeAndFinish(const GRPCResult & result, const grpc::Status & status, const CompletionCallback & callback) override
        {
            writer.WriteAndFinish(result, {}, status, getCallbackPtr(callback));
        }
    private:
        grpc::ServerAsyncWriter<GRPCResult> writer{&grpc_context};
        std::optional<GRPCQueryInfo> query_info;
    };
    template<>
    class Responder<CALL_WITH_STREAM_IO> : public BaseResponder
    {
    public:
        void start(GRPCService & grpc_service,
                  grpc::ServerCompletionQueue & new_call_queue,
                  grpc::ServerCompletionQueue & notification_queue,
                  const CompletionCallback & callback) override
        {
            grpc_service.RequestExecuteQueryWithStreamIO(&grpc_context, &reader_writer, &new_call_queue, &notification_queue, getCallbackPtr(callback));
        }
        void read(GRPCQueryInfo & query_info_, const CompletionCallback & callback) override