alamb commented on issue #4904:
URL:
https://github.com/apache/arrow-datafusion/issues/4904#issuecomment-1382862079
> If I'm not mistaken we don't support the fourth frame type;
This is what I thought too at first -- and then I tried it. I believe they
are referring to window functions like `RANGE 3 PRECEDING` which DataFusion
does support 🤯
However, after more reading, I think they are referring to something like
an expression rather than constant in a `PRECEDING` clause which DataFusion
does not support
```sql
❯ select column1, first_value(column1) OVER (ROWS column1/5 PRECEDING) from
foo;
Internal("Window frame bound cannot be BinaryOp { left: Identifier(Ident {
value: \"column1\", quote_style: None }), op: Divide, right:
Value(Number(\"5\", false)) }")
```
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