daft.functions.trunc#

def trunc(expr: Expression, interval: str, relative_to: Expression | None = None) -> Expression:
    """Alias for ``date_trunc`` with Spark-style argument order.

    Args:
        expr: The datetime/date expression to truncate.
        interval: The truncation unit/interval (e.g. ``"day"``, ``"month"``, ``"1 hour"``).
        relative_to (optional): Timestamp to truncate relative to.
    """
    normalized_interval = interval
    stripped = interval.strip()
    if stripped and not stripped[0].isdigit():
        normalized_interval = f"1 {stripped}"
    return date_trunc(normalized_interval, expr, relative_to)