alamb opened a new issue #587:
URL: https://github.com/apache/arrow-rs/issues/587
**Is your feature request related to a problem or challenge? Please describe
what you are trying to do.**
I am trying to work with timestamps -- specifically converting data from
csv, etc to timestamps
**Describe the solution you'd like**
I would like the `cast` kernel to support converting `StringArray` to
`TimestampNanosecondArray` (and the other date / time / timestamp related types)
I would like the following Rust code to compile and produce a String array
with value `"1970-01-01 00:00:00.000000100"`:
Reproducer:
```rust
let array = TimestampNanosecondArray::from(vec![100]);
let array: ArrayRef = Arc::new(array);
// array[0]: "1970-01-01 00:00:00.000000100"
println!("array[0]: {:?}", array_value_to_string(&array, 0).unwrap());
// cast to string array results in an error:
// thread 'main' panicked at 'called `Result::unwrap()` on an `Err`
value: CastError("Casting from Timestamp(Nanosecond, None) to Utf8 not
supported")', src/main.rs:26:54
let string_array = cast(&array, &DataType::Utf8).unwrap();
```
**Additional context**
The code exists in arrow to convert strings to timestamps
(`string_to_timestamp_nanos`) and timestamps to strings, but the code is not
connected to the cast kernel
Thus, it is not easy to convert an array of strings to an array of timestamps
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