def METHOD_NAME(connection_name: str = "default") -> dict[str, Any]:
    """Sets the db connection parameters.
    We do this by reading out values from parameters.py and then inserting some
    hard-coded values into them. Dummy values are also inserted in case these
    dictionaries were printed by mistake.
    """
    os.environ["TZ"] = "UTC"
    if not IS_WINDOWS:
        time.tzset()
    connections = {
        "default": CONNECTION_PARAMETERS,
        "client_failover": CLIENT_FAILOVER_PARAMETERS,
        "admin": CONNECTION_PARAMETERS_ADMIN,
    }
    chosen_connection = connections[connection_name]
    if "account" not in chosen_connection:
        pytest.skip(f"{connection_name} connection is unavailable in parameters.py")
    # testaccount connection info
    ret = {**DEFAULT_PARAMETERS, **chosen_connection}
    # snowflake admin account. Not available in GH actions
    for k, v in CONNECTION_PARAMETERS_ADMIN.items():
        ret["sf_" + k] = v
    if "host" in ret and ret["host"] == DEFAULT_PARAMETERS["host"]:
        ret["host"] = ret["account"] + ".snowflakecomputing.com"
    if "account" in ret and ret["account"] == DEFAULT_PARAMETERS["account"]:
        print_help()
        sys.exit(2)
    # a unique table name
    ret["name"] = "python_tests_" + str(uuid.uuid4()).replace("-", "_")
    ret["name_wh"] = ret["name"] + "wh"
    ret["schema"] = TEST_SCHEMA
    # This reduces a chance to exposing password in test output.
    ret["a00"] = "dummy parameter"
    ret["a01"] = "dummy parameter"
    ret["a02"] = "dummy parameter"
    ret["a03"] = "dummy parameter"
    ret["a04"] = "dummy parameter"
    ret["a05"] = "dummy parameter"
    ret["a06"] = "dummy parameter"
    ret["a07"] = "dummy parameter"
    ret["a08"] = "dummy parameter"
    ret["a09"] = "dummy parameter"
    ret["a10"] = "dummy parameter"
    ret["a11"] = "dummy parameter"
    ret["a12"] = "dummy parameter"
    ret["a13"] = "dummy parameter"
    ret["a14"] = "dummy parameter"
    ret["a15"] = "dummy parameter"
    ret["a16"] = "dummy parameter"
    return ret