The pwd() function is a helper for inspecting the current database context of a DuckDB
or MotherDuck connection. It queries the database for the current database, schema, and role.
The database and schema are returned as a tibble for easy programmatic access, while the
role is displayed using a CLI alert. This is especially useful in multi-database environments
or when working with different user roles, providing a quick way to verify where SQL queries
will be executed.