Dandandan opened a new issue #2122:
URL: https://github.com/apache/arrow-datafusion/issues/2122
**Is your feature request related to a problem or challenge? Please describe
what you are trying to do.**
We should be able to compile.
The benefit of this is that we can speed up complex / nested expressions by
avoiding unnecesarry allocations
**Describe the solution you'd like**
We should be able to take in a collection of a `RecordBatch` / named
`Array`s and compile an expression like `(a + b)/ 2` to a loop that results in
a new `Array`.
```
fn compile(schema: SchemaRef, expr: Expr) -> CompiledFunction {
}
```
The loop itself also must be included in the to-be compiled expression, to
remove call overhead and allow for possible use of SIMD instructions.
**Describe alternatives you've considered**
n/a
**Additional context**
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