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.


else
        {
            in_external_group = false;
            /// Parameter arg after underline.
            )
            {
                auto param_continuation = arg.substr(strlen("--param_")
                auto equal_pos = param_continuation.find_first_of('='
                if (equal_pos == std::string::npos)
                {
                    /// param_name value
                    ++a
                    if (arg_num >= argc)
                        throw Exception("Parameter requires value", ErrorCodes::BAD_ARGUMENTS
                    arg = argv[arg_num];
                    quee(String(param_continuation), String(arg)
                }
                else
                {
                    if (equal_pos == 0)
                        throw Exception("Parameter name cannot be empty", ErrorCodes::BAD_ARGUMENTS
                    /// param_name=value
                    quee(param_continuation.substr(0, equal_pos), param_continuation.substr(equal_pos + 1)
                }
            }
            else if (arg.starts_with("--host") || arg.starts_with("-h"))
            {
                std::string host_arg;
                /// --host host
                if (arg == " == "-h")