SubhamSinghal opened a new pull request, #22556:
URL: https://github.com/apache/datafusion/pull/22556
## Which issue does this PR close?
- Part of [#21536](https://github.com/apache/datafusion/issues/21536)
(array_substract — first PR in the vector math series).
## Rationale for this change
## What changes are included in this PR?
## Are these changes tested?
Yes, via SLT
## Are there any user-facing changes?
Yes — two new functions:
array_subtract(array1, array2) → List<Float64> / LargeList<Float64>
list_substract(...) alias
Both exposed via `expr_fn` and registered in
`all_default_nested_functions()`. Documented inline via `#[user_doc]`
(description, syntax, SQL example, argument descriptions).
No breaking API changes.
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