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Posted to issues@calcite.apache.org by "Muhammad Gelbana (JIRA)" <ji...@apache.org> on 2019/07/01 13:36:00 UTC
[jira] [Created] (CALCITE-3164) Averaging an all-nulls values after
grouping produce NaN instead of NULL
Muhammad Gelbana created CALCITE-3164:
-----------------------------------------
Summary: Averaging an all-nulls values after grouping produce NaN instead of NULL
Key: CALCITE-3164
URL: https://issues.apache.org/jira/browse/CALCITE-3164
Project: Calcite
Issue Type: Bug
Components: core
Affects Versions: 1.20.0
Reporter: Muhammad Gelbana
{code:sql}
-- Values are a single tuple
SELECT C1, avg(C2)
FROM (VALUES('X', NULL::INT)) T (C1, C2)
GROUP BY C1
-- Values are more than a single tuple
SELECT C1, avg(C2)
FROM (VALUES('X', NULL::INT), ('X', NULL::INT)) T (C1, C2)
GROUP BY C1
{code}
Those queries return {{NaN}} while it's expected to return {{NULL}}.
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