```
cat /etc/clickhouse-client/conf.d/propmt.xml
<config>
    <prompt_by_server_display_name>
	    <default>{database}@{host} :) </default>
    </prompt_by_server_display_name>
</config>


cat /etc/clickhouse-server/conf.d/default_database.xml
<?xml version="1.0"?>
<yandex>
    <default_database>dw</default_database>
</yandex>

$ clickhouse-client
ClickHouse client version 21.6.5.37 (official build).
Connecting to localhost:9000 as user default.
Connected to ClickHouse server version 21.6.5 revision 54448.

default@localhost :) select currentDatabase();

SELECT currentDatabase()

Query id: efd2952e-a0d5-4250-be3c-5c3a929d3256

┌─currentDatabase()─┐
│ dw                │
└───────────────────┘
```

now: `default@localhost :)`
expected: `dw@localhost :)`
{
            if (!processQueryText(input))
                break;
            last_input = input;
        }
        catch (const Exception & e)
        {
            /// We don't need to handle the test hints in the interactive mode.
            std::cerr << "Exception on client:" << std::endl << getExceptionMessage(e, print_stack_trace, true) << std::endl << std::endl;
            client_exception.reset(e.clone());
        }
        if (client_exception)
        {
            /// client_exception may have been set above or elsewhere.
            /// Client-side exception during query execution can result in the loss of
            /// sync in the connection protocol.
             allow to enter the next query.
            if (!connection->checkConnected(connection_parameters.timeouts))
                connect();
        }
    }
    while (true);
    if (isNewYearMode())
        std::cout << "Happy new year." << std::endl;
    else if (isChineseNewYearMode(local_tz))
        std::cout << "Happy Chinese new year. 春节快乐!" << std::endl;
    else
        std::cout << "Bye." << std::endl;
}
bool ClientBase::processMultiQueryFromFile(const String & file_name)