Function arrow_arith::temporal::date_part
source · pub fn date_part(
array: &dyn Array,
part: DatePart,
) -> Result<ArrayRef, ArrowError>
Expand description
Given an array, return a new array with the extracted DatePart
as signed 32-bit
integer values.
Currently only supports temporal types:
- Date32/Date64
- Time32/Time64
- Timestamp
Returns an Int32Array
unless input was a dictionary type, in which case returns
the dictionary but with this function applied onto its values.
If array passed in is not of the above listed types (or is a dictionary array where the values array isn’t of the above listed types), then this function will return an error.
§Examples
let input: TimestampMicrosecondArray =
vec![Some(1612025847000000), None, Some(1722015847000000)].into();
let actual = date_part(&input, DatePart::Week).unwrap();
let expected: Int32Array = vec![Some(4), None, Some(30)].into();
assert_eq!(actual.as_ref(), &expected);