[SPARK-12578] Parser should not silently ignore the distinct keyword used in an aggregate function when OVER clause is used - ASF JIRA

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Details

Type: Sub-task
Status: Resolved
Priority: Major
Resolution: Fixed
Affects Version/s: None
Fix Version/s: 2.0.0
Component/s: SQL
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Description

Right now, when an aggregate function is used as window function and DISTINCT is used, Hive's parser silently drop the DISTINCT keyword. It is fine to not support DISTINCT aggregation in window function. But, it is not good to silently drop the keyword.