crepererum commented on PR #13293:
URL: https://github.com/apache/datafusion/pull/13293#issuecomment-2467807631
Based on the discussion, another idea:
```rust
/// ...
///
/// # Note
/// Unknown ranges are modeled as `Precision::Range{lower: None, upper:
None}`,
enum Precision {
/// Estimated, but very close to the given point.
///
/// This can be treated as an over-simplified normal distribution.
PointEstimation(T),
/// Value is for sure in the given open/half-open/closed range.
///
/// If `lower`/`upper` are given, they are INCLUSIVE ends.
Range {
lower: Option<T>,
upper: Option<T>,
},
}
```
(this might need some more docs and helper methods, but I think you get the
idea)
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