Currently executing queries like: 

```
SELECT * FROM system.tables LIMIT 10;\G 
SELECT * FROM system.tables LIMIT 10\G;
```

Ends up with a syntax error.

From the documentation, it should not be an error:

> You can specify \G instead of or after the semicolon.


("server_logs_file", po::value<std::string>(), "put server logs into specified file")
        ("multiline,m", "multiline")
        ("multiquery,n", "multiquery")
        ("suggestion_limit", po::value<int>()->default_value(10000),
            "Suggestion limit for how many databases, tables and columns to fetch.")
        ("format,f", po::value<std::string>(), "default output format")
        ("vertical,E", "vertical output format, same as --format=Vertical or FORMAT Vertical or \\G at end of command")
        ("highlight", po::value<bool>()->default_value(true), "enable or disable basic syntax highlight in interactive command line")
        ("ignore-error", "do not stop processing in multiquery mode")
        ("stacktrace", "print stack traces of exceptions")
        ("hardware-utilization", "print hardware utilization information in progress bar")
        ("print-profile-events", po::value(&profile_events.print)->zero_tokens(), "Printing ProfileEvents packets")
        ("profile-events-delay-ms", po::value<UInt64>()->default_value(profile_events.delay_ms), "Delay between printing `ProfileEvents` packets (-1 - print only totals, 0 - print every single packet)")
        ("interactive", "Process queries-file or --query query and start interactive mode")
        ("pager", po::value<std::string>(), "Pipe all output into this command (less or similar)")
        ("max_memory_usage_in_client", po::value<int>(), "Set memory limit in client/local server")
    ;
    addOptions(options_description
    auto getter = [](const auto & op)
    {
        String op_long_name = op->long_name(
        return "--" + String(op_long_name
    };
    if (options_description.main_description)
    {
        const auto & main_options = options_description.main_description->options(
        std::transform(main_options.begin(), main_options.end(), std::back_inserter(cmd_options), getter
    }
    if (options_description.external_description)
    {