dovijoel commented on issue #2869:
URL:
https://github.com/apache/arrow-datafusion/issues/2869#issuecomment-1196815138
I am still having this issue while using the master branch with using the
API. Am I doing something incorrectly?
```rust
// create expression for close price with a lead window function
let close_expr = Expr::WindowFunction {
fun:
WindowFunction::BuiltInWindowFunction(BuiltInWindowFunction::Lead),
args: vec![col("PX_LAST"), lit(10)],
partition_by: vec![col("InstrumentID")],
order_by: vec![Sort {
expr: Box::new(col("dates")),
asc: ascending,
nulls_first: false
}],
window_frame: None
}
// calculate the return
let return_expr = (close_expr / col("PX_LAST")) - 1.0;
let returnsDf = df.select(vec![
col("dates"),
col("InstrumentID"),
col("PX_LAST").alias("open_price"),
close_expr.alias("close_price"),
return_expr.alias("return")
])?;
dailyReturnsDf.show_limit(100).await?;
```
This results in:
`Error: NotImplemented("Physical plan does not support logical expression
LEAD(#raw_data.PX_LAST, Int64(10)) PARTITION BY [#raw_data.InstrumentID] ORDER
BY [#raw_data.dates ASC NULLS LAST]")`
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