datafusion

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Consolidate examples to make them easier to navigate

3

### Is your feature request related to a problem or challenge? The current number of examples in https://github.com/apache/datafusion/tree/main/datafusion-examples is somewhat overwhelming and hard to navigate ### Describe the solution you'd...

alamb

RFC / Prototype user defined sql planner might look like

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I don't intend to merge this PR. ## Which issue does this PR close? Prototype of what the API described in https://github.com/apache/datafusion/issues/10534 might look like Inspired by https://github.com/apache/datafusion/pull/11155 from @jayzhan211...

alamb

## Which issue does this PR close? Closes #10906 ## Rationale for this change ## What changes are included in this PR? - Converts grouping to UDAF - Clean the...

Rachelint

Add standalone example of using the SQL frontend

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## Which issue does this PR close? Part of https://github.com/apache/datafusion/issues/10855 ## Rationale for this change The current `rewrite_expr.rs` example has three distinct examples: 1. Using DataFusion LogicalPlanning without execution 2....

alamb

Array agg groups accumulator, second attempt

5

**Continuation of https://github.com/apache/datafusion/pull/10149** ## Which issue does this PR close? Closes #10145. Closes https://github.com/apache/datafusion/pull/10149 ## Rationale for this change See the issue. ## What changes are included in this PR?...

markusa380

[Draft v2] Another Multi group by optimization

5

## Which issue does this PR close? Closes #. Related to https://github.com/apache/datafusion/issues/9403 ## Rationale for this change ## What changes are included in this PR? ## Are these changes tested?...

jayzhan211

Large `OR` list overflows the stack

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### Describe the bug In InfluxDB we saw people issue queries with many `OR` chains that caused a stack overflow ```sql SELECT ... WHERE x = 1 OR x =...

alamb

Custom operator support

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I think this is ready to review. ~~WIP to decide if we progress cc @alamb.~~ ~~This is based on #11132 since I need `Operator` to be non-copyable. If we decide...

samuelcolvin

Recursive `unnest`

1

## Which issue does this PR close? Closes #10660. ## Rationale for this change ## What changes are included in this PR? ## Are these changes tested? ## Are there...

duongcongtoai

Support unparsing the Value Plan of Array (List) to SQL String

2

### Is your feature request related to a problem or challenge? In `unparser/expr.rs`, list scalar values haven't been supported yet. ```rust ScalarValue::FixedSizeList(_a) => not_impl_err!("Unsupported scalar: {v:?}"), ScalarValue::List(_a) => not_impl_err!("Unsupported scalar:...

goldmedal