Primitive stats #66
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Primitive stats #66
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robert3005
reviewed
Mar 5, 2024
robert3005
reviewed
Mar 5, 2024
Comment on lines
+47
to
+79
| let first_non_null = self | ||
| .1 | ||
| .iter() | ||
| .enumerate() | ||
| .skip_while(|(_, valid)| !*valid) | ||
| .map(|(idx, _)| values[idx]) | ||
| .next(); | ||
|
|
||
| if first_non_null.is_none() { | ||
| return Ok(StatsSet::from(HashMap::from([ | ||
| (Stat::Min, NullableScalar::None(T::PTYPE.into()).boxed()), | ||
| (Stat::Max, NullableScalar::None(T::PTYPE.into()).boxed()), | ||
| (Stat::IsConstant, true.into()), | ||
| (Stat::IsSorted, true.into()), | ||
| (Stat::IsStrictSorted, true.into()), | ||
| (Stat::RunCount, 1.into()), | ||
| (Stat::NullCount, 1.into()), | ||
| ( | ||
| Stat::BitWidthFreq, | ||
| ListScalarVec(vec![0; size_of::<T>() * 8 + 1]).into(), | ||
| ), | ||
| ]))); | ||
| } | ||
| }; | ||
|
|
||
| let mut stats = StatsAccumulator::new(first_non_null.unwrap()); | ||
| values | ||
| .iter() | ||
| .zip(self.1.iter()) | ||
| .skip(1) | ||
| .map(|(next, valid)| valid.then_some(*next)) | ||
| .for_each(|next| stats.nullable_next(next)); | ||
| Ok(stats.into_set()) | ||
| } |
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I think there's a way to make this nicer but can leave for later
robert3005
approved these changes
Mar 5, 2024
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Fixes #58
Closes #53