deniskuzZ commented on PR #4448:
URL: https://github.com/apache/calcite/pull/4448#issuecomment-3016773663
I’m unable to reproduce NaN with Decimals in Calcite tests - it only occurs
with Doubles.
````
final String[] decimals = {"cast(64.34 as decimal(30,2))", "64.34", "64.34"};
f.checkAgg("stddev(x)", decimals, isExactly("0.00"));
````
However, in Hive, I can consistently reproduce NaN with Decimals and
`org.apache.calcite.rel.rules.AggregateReduceFunctionsRule`.
````
SELECT stddev(interest_paid) FROM (
SELECT cast(64.34 as decimal(30,2)) AS interest_paid
UNION ALL
SELECT 64.34
UNION ALL
SELECT 64.34
) t;
````
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