alamb commented on code in PR #15044:
URL: https://github.com/apache/datafusion/pull/15044#discussion_r1983209738
##########
datafusion/physical-expr/src/aggregate.rs:
##########
@@ -91,6 +91,9 @@ impl AggregateExprBuilder {
}
}
+ /// Constructs an `AggregateFunctionExpr` from the builder
+ ///
+ /// Note that an [`Self::alias`] must be provided before calling this
method.
Review Comment:
It would also be nice to update the error message below
```rust
None => return internal_err!("alias should provided"),
```
Perhaps to something like
```rust
None => return internal_err!("AggregateExprBuilder::alias must
be provided prior to build"),
```
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