Jefffrey opened a new issue, #5558:
URL: https://github.com/apache/arrow-datafusion/issues/5558
**Describe the bug**
<!--
A clear and concise description of what the bug is.
-->
If calling `describe(...)` on a dataframe without a numeric type method then
it returns an error.
**To Reproduce**
<!--
Steps to reproduce the behavior:
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```rust
ctx.sql("select 'a' as a")
.await?
.describe()
.await?
.show()
.await?;
```
Causes error:
```
Error: Plan("Aggregate requires at least one grouping or aggregate
expression")
```
**Expected behavior**
<!--
A clear and concise description of what you expected to happen.
-->
Either be able to handle this properly or return a more informative error
**Additional context**
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Add any other context about the problem here.
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Caused by filters for certain aggregations:
https://github.com/apache/arrow-datafusion/blob/ecbc843a1a8c38b2466748bc92a6e22ce08d51ed/datafusion/core/src/dataframe.rs#L371-L449
- See mean, std, median
Also worth testing for if the input dataframe has only boolean
boolean/binary column, like so:
```rust
ctx.sql("select true as a")
.await?
.describe()
.await?
.show()
.await?;
```
- See max & min in above code snippet
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