alamb commented on issue #7765:
URL:
https://github.com/apache/arrow-datafusion/issues/7765#issuecomment-1751681178
@waynexia -- I agree with your points about `Expr::Wildcard` being
confusing. I didn't quite understand your proposal to `change the public
interface that may generate wildcard`, specifically how someone would express
"select all the columns" when building expressions programmatically 🤔
Concretely, what would be the equivalent to the following?
```rust
ctx.table("alltypes_plain")
.await?
.select(vec![count(Expr::Wildcard)])
```
BTW we
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