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https://issues.apache.org/jira/browse/HIVE-4934?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14080569#comment-14080569
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Lefty Leverenz commented on HIVE-4934:
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Thanks [~lars_francke]. Was there a reason for the line break that put
"SELECT" and "a," on separate lines? (I removed it to match all the other
examples, but you can restore it if it has a purpose.)
{code}
SELECT
a,
COUNT(b) OVER (PARTITION BY c),
SUM(b) OVER (PARTITION BY c)
FROM T;
{code}
Also thanks for changing the formatting of code samples.
* [PARTITION BY with partitioning, ORDER BY, and window specification |
https://cwiki.apache.org/confluence/display/Hive/LanguageManual+WindowingAndAnalytics#LanguageManualWindowingAndAnalytics-PARTITIONBYwithpartitioning,ORDERBY,andwindowspecification]
> Improve documentation of OVER clause
> ------------------------------------
>
> Key: HIVE-4934
> URL: https://issues.apache.org/jira/browse/HIVE-4934
> Project: Hive
> Issue Type: Bug
> Reporter: Lars Francke
> Assignee: Lars Francke
> Priority: Minor
>
> {code}
> CREATE TABLE test (foo INT);
> SELECT ntile(10), foo OVER (PARTITION BY foo) FROM test;
> FAILED: SemanticException org.apache.hadoop.hive.ql.metadata.HiveException:
> Only COMPLETE mode supported for NTile function
> SELECT foo, ntile(10) OVER (PARTITION BY foo) FROM test;
> ...works...
> {code}
> I'm not sure if that is a bug or necessary. Either way the error message is
> not helpful as it's not documented anywhere what {{COMPLETE}} mode is. A
> cursory glance at the code didn't help me either.
> Edit: It is not a bug, it wasn't clear to me that the OVER clause only
> applies to the directly preceding function.
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