Andrew Lamb

[Epic] Port BuiltInFunctons to `datafusion-functions-*` crates

3

### Is your feature request related to a problem or challenge? As part of making DataFusion even more customizable (https://github.com/apache/arrow-datafusion/issues/8045), it is valuable to let system designers mix and match...

[DISCUSSION] Should we implement access control hooks in DataFusion?

5

### Is your feature request related to a problem or challenge? @comphead brings up an excellent point here: https://github.com/apache/arrow-datafusion/pull/7441#issuecomment-1698341294 Basically many database systems allow some sort of access control such...

Can't serialize example `ExecutionPlan` to substrait

2

### Is your feature request related to a problem or challenge? While working on an example for serializing substrait plans (see https://github.com/apache/arrow-datafusion/pull/9260 PR), I found I could not write an...

Add a ScalarUDFImpl::simplfy() API

8

### Is your feature request related to a problem or challenge? As part of porting `arrow_cast` https://github.com/apache/arrow-datafusion/issues/9287 and `make_array` https://github.com/apache/arrow-datafusion/issues/9288, it has become clear that some functions have special simplification...

Move `abs` to `datafusion_functions`

2

### Is your feature request related to a problem or challenge? Part of https://github.com/apache/arrow-datafusion/issues/9285 and https://github.com/apache/arrow-datafusion/issues/8045 The goal is to extract function definitions out of the datafusion core. ### Describe...

Move `make_array` to datafusion-functions

3

### Is your feature request related to a problem or challenge? Part of https://github.com/apache/arrow-datafusion/issues/9285 and https://github.com/apache/arrow-datafusion/issues/8045 The goal is to extract function definitions out of the datafusion core. Note the...

Move `arrow_cast` to `datafusion-functions` crate

1

### Is your feature request related to a problem or challenge? Part of https://github.com/apache/arrow-datafusion/issues/9285 and https://github.com/apache/arrow-datafusion/issues/8045 The goal is to extract function definitions out of the datafusion core. This ticket...

[EPIC] Unify Function Interface (remove `BuiltInScalarFunction`)

15

### Is your feature request related to a problem or challenge? This is based on the wonderful writeup from @2010YOUY01 in https://github.com/apache/arrow-datafusion/issues/7977 As previously discussed in https://github.com/apache/arrow-datafusion/issues/7110 https://github.com/apache/arrow-datafusion/pull/7752 there are...

### Is your feature request related to a problem or challenge? This ticket has links a collection of various ways to make queries with `LIMIT` or various other variants (like...

[EPIC] (Even More) Grouping / Group By / Aggregation Performance

10

### Is your feature request related to a problem or challenge? Aggregation is a key operation of Analytic engines. DataFusion has made great progress recently (e.g. https://github.com/apache/arrow-datafusion/issues/4973 and https://github.com/apache/arrow-datafusion/issues/6889) This...