_date_trunc_coarse

datafusion_functions::datetime::date_trunc

Function _date_trunc_coarse 

Source 
fn _date_trunc_coarse<T>(
    granularity: DateTruncGranularity,
    value: Option<T>,
) -> Result<Option<T>>
where
    T: Datelike + Timelike + Sub<Duration, Output = T> + Copy,