            Usage:
                pyprql connection_string

            Examples:
                pyprql 'sqlite:///file.db'
                pyprql 'postgresql://user:password@localhost:5432/database'
                pyprql 'postgresql+psycopg2://user:password@localhost:5432/database'
                pyprql 'mysql://scott:tiger@localhost/foo'

            Try it out:
                curl https://github.com/prql/PyPrql/blob/main/resources/chinook.db?raw=true -o chinook.db
                pyprql 'sqlite:///chinook.db'

            Notes:
                The connection string syntax is detailed here https://docs.sqlalchemy.org/en/13/core/engines.html#database-urls
                To install database drivers, see https://docs.sqlalchemy.org/en/13/dialects/index.html

                Mysql      : pip install mysqlclient
                Postgresql : pip install psycopg2-binary
                MariaDB    : pip install mariadb
                Oracle     : pip install cx_oracle
                SQLite     : <built-in>
