comphead commented on issue #10688:
URL: https://github.com/apache/datafusion/issues/10688#issuecomment-2138584100
good catch, we can check that
Even simple conversion gives weird result
```
let expr2 = ScalarValue::Float32(Some(128.2))
.cast_to(&DataType::Float64)
.unwrap()
;
println!("expr2: {:?}", expr2);
expr2: Float64(128.1999969482422)
```
Opposite conversion is ok though
```
let expr2 = ScalarValue::Float64(Some(128.2))
.cast_to(&DataType::Float32)
.unwrap();
println!("expr2: {:?}", expr2);
expr2: Float32(128.2)
```
For me looks like a conversion issue, especially strange its happening when
we convert into larger precision.
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