Gunther Hagleitner created HIVE-6348:
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Summary: Order by/Sort by in subquery
Key: HIVE-6348
URL: https://issues.apache.org/jira/browse/HIVE-6348
Project: Hive
Issue Type: Bug
Reporter: Gunther Hagleitner
Priority: Minor
select * from (select * from foo order by c asc) bar order by c desc;
in hive sorts the data set twice. The optimizer should probably remove any
order by/sort by in the sub query unless you use 'limit '. Could even go so far
as barring it at the semantic level.
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