jayzhan211 commented on code in PR #13564:
URL: https://github.com/apache/datafusion/pull/13564#discussion_r1865774046
##########
datafusion/core/tests/fuzz_cases/aggregation_fuzzer/data_generator.rs:
##########
@@ -87,7 +87,12 @@ impl DatasetGeneratorConfig {
.iter()
.filter_map(|d| {
if d.column_type.is_numeric()
- && !matches!(d.column_type, DataType::Float32 |
DataType::Float64)
+ && !matches!(
Review Comment:
```
statement ok
create table t as values (arrow_cast(21, 'Decimal128(20, 3)'), 1),
(arrow_cast(11, 'Decimal128(20, 3)'), 2);
query RR
select sum(column1), sum(distinct column1) from t group by column2;
----
11 11
21 21
query TT
select arrow_typeof(sum(column1)), arrow_typeof(sum(distinct column1)) from
t group by column2;
----
Decimal128(38, 3) Decimal128(30, 3)
Decimal128(38, 3) Decimal128(30, 3)
```
Decimal128(30, 3) is precision used in grouping
Decimal128(38, 3) is the normal precision in sum
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