jayzhan211 commented on PR #10560:
URL: https://github.com/apache/datafusion/pull/10560#issuecomment-2154683624
And, I think we need `fn agg_builder(self) -> AggregateBuilder;` to get
`AggregateBuilder` from Expr
```rust
fn agg_builder(self) -> AggregateBuilder {
match self {
Expr::AggregateFunction(udaf) => {
AggregateBuilder::new(Some(udaf))
}
_ => AggregateBuilder::new(None)
}
}
```
The API is like `udaf.call(args).agg_builder().filter().order_by().build()?`
`udaf.call(args)` is `Expr::AggregateFunction`
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