yjshen commented on a change in pull request #1487:
URL: https://github.com/apache/arrow-rs/pull/1487#discussion_r835898239
##########
File path: arrow/src/array/ord.rs
##########
@@ -225,6 +225,11 @@ pub fn build_compare(left: &dyn Array, right: &dyn Array)
-> Result<DynComparato
}
}
}
+ (Decimal(_, _), Decimal(_, _)) => {
+ let left: DecimalArray = DecimalArray::from(left.data().clone());
+ let right: DecimalArray = DecimalArray::from(right.data().clone());
+ Box::new(move |i, j| left.value(i).cmp(&right.value(j)))
Review comment:
I think it's validated in the beginning of this function
```rust
pub fn build_compare(left: &dyn Array, right: &dyn Array) ->
Result<DynComparator> {
use DataType::*;
use IntervalUnit::*;
use TimeUnit::*;
Ok(match (left.data_type(), right.data_type()) {
(a, b) if a != b => {
return Err(ArrowError::InvalidArgumentError(
"Can't compare arrays of different types".to_string(),
));
}
```
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