alamb commented on code in PR #5866:
URL: https://github.com/apache/arrow-datafusion/pull/5866#discussion_r1160154953
##########
datafusion/physical-expr/src/aggregate/utils.rs:
##########
@@ -31,3 +33,49 @@ pub fn get_accum_scalar_values_as_arrays(
.map(|s| s.to_array_of_size(1))
.collect::<Vec<_>>())
}
+
+pub fn calculate_result_decimal_for_avg(
Review Comment:
This seems somewhat related to
https://github.com/apache/arrow-datafusion/pull/5675 from @viirya to calculate
the output size of a decimal multiplication. I wonder if there is some more
general function / approach than special casing in the aggregator
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