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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2022/01/18 17:13:28 UTC
[GitHub] [arrow-rs] alamb opened a new issue #1201: Implement DictionaryArray support in `eq_dyn`, `neq_dyn`, `lt_dyn`, `lt_eq_dyn`, `gt_dyn`, `gt_eq_dyn`
alamb opened a new issue #1201:
URL: https://github.com/apache/arrow-rs/issues/1201
**Is your feature request related to a problem or challenge? Please describe what you are trying to do.**
Rationale make it fast and easy (more ergonomic) to compare arrays, both for DataFusion and other users. See rationale in https://github.com/apache/arrow-rs/issues/843
**Describe the solution you'd like**
The idea would basically be to implement the same thing as @viirya did for timestamp types in https://github.com/apache/arrow-rs/pull/1095 but for `DictionaryArrays`
That is the following code should not assert and compare the decimal arrays element by element:
```rust
let arr1: DictionaryArray<Int32Type> = ...;
let arr2: DictionaryArray<Int32Type> = ...;
let result = eq_dyn(&arr1, &arr2);
assert!(result.is_ok())
```
**Describe alternatives you've considered**
For completeness, we could also add `eq_dict`, `neq_dict`, etc as well, though I personally think focusing on the dyn kernels would be the easiest thing.
**Additional context**
other context:
I am trying to move datafusion over to using the dyn kernels here: https://github.com/apache/arrow-datafusion/pull/1475
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[GitHub] [arrow-rs] alamb closed issue #1201: Implement DictionaryArray support in `eq_dyn`, `neq_dyn`, `lt_dyn`, `lt_eq_dyn`, `gt_dyn`, `gt_eq_dyn`
Posted by GitBox <gi...@apache.org>.
alamb closed issue #1201:
URL: https://github.com/apache/arrow-rs/issues/1201
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