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https://issues.apache.org/jira/browse/HIVE-9534?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14512997#comment-14512997
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N Campbell commented on HIVE-9534:
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While Postgres may not support ISO-SQL syntax as shown other vendors do. That
said, if the engine does not attempt to support distinct aggregation then a
parsing error should be thrown -and- the documentation improved at
https://cwiki.apache.org/confluence/display/Hive/LanguageManual+WindowingAndAnalytics
> incorrect result set for query that projects a windowed aggregate
> -----------------------------------------------------------------
>
> Key: HIVE-9534
> URL: https://issues.apache.org/jira/browse/HIVE-9534
> Project: Hive
> Issue Type: Bug
> Components: SQL
> Reporter: N Campbell
>
> Result set returned by Hive has one row instead of 5
> {code}
> select avg(distinct tsint.csint) over () from tsint
> create table if not exists TSINT (RNUM int , CSINT smallint)
> ROW FORMAT DELIMITED FIELDS TERMINATED BY '|' LINES TERMINATED BY '\n'
> STORED AS TEXTFILE;
> 0|\N
> 1|-1
> 2|0
> 3|1
> 4|10
> {code}
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