mingmwang commented on code in PR #5973:
URL: https://github.com/apache/arrow-datafusion/pull/5973#discussion_r1164775086
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datafusion/physical-expr/src/aggregate/average.rs:
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@@ -298,16 +305,40 @@ impl RowAccumulator for AvgRowAccumulator {
}
fn evaluate(&self, accessor: &RowAccessor) -> Result<ScalarValue> {
- assert_eq!(self.sum_datatype, DataType::Float64);
- Ok(match accessor.get_u64_opt(self.state_index()) {
- None => ScalarValue::Float64(None),
- Some(0) => ScalarValue::Float64(None),
- Some(n) => ScalarValue::Float64(
- accessor
- .get_f64_opt(self.state_index() + 1)
- .map(|f| f / n as f64),
- ),
- })
+ match self.sum_datatype {
+ DataType::Decimal128(p, s) => {
+ match accessor.get_u64_opt(self.state_index()) {
+ None => Ok(ScalarValue::Decimal128(None, p, s)),
+ Some(0) => Ok(ScalarValue::Decimal128(None, p, s)),
Review Comment:
I will do some test on this today.
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