```
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 :)`
es_hint = false;
                            fmt::print(stderr, "Expected client error code '{}' but got '{}' (query: {}).\n",
                                       test_hint.clientError(), client_exception->code(), full_query);
                        }
                    }
                    if (!test_hint.clientError() && !test_hint.serverError())
                    {
                        // No error was expected but it still occurred. This is the
                        // default case without test hint, doesn't need additional
                        // diagnostics.
                        es_hint = false;
                    }
                }
                else
                {
                    if (test_hint.clientError())
                    {
                        es_hint = false;
                        fmt::print(stderr,
                                   "The query succeeded but the client error '{}' was expected (query: {}).\n",
                                   test_hint.clientError(), full_query);
                    }
                    if (test_hint.serverError())
                    {
                        es_hint = false;
                        fmt::print(stderr,
                                   "The query succeeded but the server error '{}' was expected (query: {}).\n",
                                   test_hint.serverError(), full_query);
                    }
                }