jayzhan211 opened a new issue, #5407:
URL: https://github.com/apache/arrow-rs/issues/5407
**Is your feature request related to a problem or challenge? Please describe
what you are trying to do.**
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I want to be able to compare ListArray. The comparison order is left to
right and if the prefix is the same then it is considered.
lesser.
For example,
* List(1,2,3) < List(1,2,3,4)
* List(List(1,2,3), List(10)) < List(List(1,2,4), List(1))
* List(List(1,2,3), List(1)) > List(List(1,2,2), List(2))
> The behavior takes Duckdb's array sort as a reference.
**Describe the solution you'd like**
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Support nested types in `compare_op`, currently failed on this line.
```rust
if l_t != r_t || l_t.is_nested() {
return Err(ArrowError::InvalidArgumentError(format!(
"Invalid comparison operation: {l_t} {op} {r_t}"
)));
}
```
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**Additional context**
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We can support most of the ops in the future, `lt` and `eq` are two
important functions that should work first.
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