Closed
Description
Is your feature request related to a problem or challenge? Please describe what you are trying to do.
Casting temporal to utf8view is not currently supported.
#[test]
fn test_cast_timestamp_to_strings() {
// "2018-12-25T00:00:02.001", "1997-05-19T00:00:03.005", None
let array =
TimestampMillisecondArray::from(vec![Some(864000003005), Some(1545696002001), None]);
let out = cast(&array, &DataType::Utf8).unwrap();
let out = out
.as_any()
.downcast_ref::<StringArray>()
.unwrap()
.into_iter()
.collect::<Vec<_>>();
assert_eq!(
out,
vec![
Some("1997-05-19T00:00:03.005"),
Some("2018-12-25T00:00:02.001"),
None
]
);
let out = cast(&array, &DataType::LargeUtf8).unwrap();
let out = out
.as_any()
.downcast_ref::<LargeStringArray>()
.unwrap()
.into_iter()
.collect::<Vec<_>>();
assert_eq!(
out,
vec![
Some("1997-05-19T00:00:03.005"),
Some("2018-12-25T00:00:02.001"),
None
]
);
let out = cast(&array, &DataType::Utf8View).unwrap();
let out = out
.as_any()
.downcast_ref::<StringViewArray>()
.unwrap()
.into_iter()
.collect::<Vec<_>>();
assert_eq!(
out,
vec![
Some("1997-05-19T00:00:03.005"),
Some("2018-12-25T00:00:02.001"),
None
]
);
}CastError("Casting from Timestamp(Millisecond, None) to Utf8View not supported")
Describe the solution you'd like
Casting from temporal to utf8view arrays is supported.
Describe alternatives you've considered
Additional context