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Posted to github@arrow.apache.org by "alamb (via GitHub)" <gi...@apache.org> on 2023/03/27 17:15:01 UTC
[GitHub] [arrow-rs] alamb opened a new issue, #3962: Support Date32/Date64 minus Interval
alamb opened a new issue, #3962:
URL: https://github.com/apache/arrow-rs/issues/3962
**Is your feature request related to a problem or challenge? Please describe what you are trying to do.**
One may like to find out "2 days ago" by computing a date - Interval.
while adding Date to intervals *is* supported, subtracting is not
**Describe the solution you'd like**
I would like `subtract_dyn` not to panic:
```rust
fn add_interval_date() {
let arr = Arc::new(Date32Array::from(vec![
1_000_000,
])) as ArrayRef;
// Would like to add and subtract intervals:
// would like to add and substract 1 day
let interval_array = Arc::new(IntervalDayTimeArray::from(vec![
Some(IntervalDayTimeType::make_value(0, 1)),
])) as ArrayRef;
// input:
// +------------+
// | input |
// +------------+
// | 4707-11-29 |
// +------------+
println!(
"input:\n{}",
pretty_format_columns("input", &[arr.clone()]).unwrap()
);
// interval:
// +-------------------------------------------------+
// | interval |
// +-------------------------------------------------+
// | 0 years 0 mons 0 days 0 hours 0 mins 0.001 secs |
// +-------------------------------------------------+
println!(
"interval:\n{}",
pretty_format_columns("interval", &[interval_array.clone()]).unwrap()
);
// add:
// +------------+
// | out |
// +------------+
// | 4707-11-29 |
// +------------+
let new_arr = add_dyn(&arr, interval_array.as_ref()).unwrap();
println!(
"add:\n{}",
pretty_format_columns("out", &[new_arr]).unwrap()
);
// panics"
// thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: CastError("Unsupported data type Date32, Interval(DayTime)")', src/main.rs:154:63
let new_arr = subtract_dyn(&arr, interval_array.as_ref()).unwrap();
println!(
"sub:\n{}",
pretty_format_columns("out", &[new_arr]).unwrap()
);
}
```
**Describe alternatives you've considered**
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**Additional context**
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[GitHub] [arrow-rs] alamb commented on issue #3962: Support Date32/Date64 minus Interval
Posted by "alamb (via GitHub)" <gi...@apache.org>.
alamb commented on issue #3962:
URL: https://github.com/apache/arrow-rs/issues/3962#issuecomment-1485641418
I think this is a good first issue because the semantics are well defined and there are some existing examples
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[GitHub] [arrow-rs] SinanGncgl commented on issue #3962: Support Date32/Date64 minus Interval
Posted by "SinanGncgl (via GitHub)" <gi...@apache.org>.
SinanGncgl commented on issue #3962:
URL: https://github.com/apache/arrow-rs/issues/3962#issuecomment-1487362913
Hi, I would like to take this if it is okay for you? Thank you.
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[GitHub] [arrow-rs] tustvold closed issue #3962: Support Date32/Date64 minus Interval
Posted by "tustvold (via GitHub)" <gi...@apache.org>.
tustvold closed issue #3962: Support Date32/Date64 minus Interval
URL: https://github.com/apache/arrow-rs/issues/3962
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[GitHub] [arrow-rs] SinanGncgl commented on issue #3962: Support Date32/Date64 minus Interval
Posted by "SinanGncgl (via GitHub)" <gi...@apache.org>.
SinanGncgl commented on issue #3962:
URL: https://github.com/apache/arrow-rs/issues/3962#issuecomment-1488193941
I linked a pr so that you can review and I can fix if you want any changes, thank you!
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