Vineet Garg created HIVE-18173:
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Summary: Improve plans for correlated subqueries with non-equi
predicate
Key: HIVE-18173
URL: https://issues.apache.org/jira/browse/HIVE-18173
Project: Hive
Issue Type: Improvement
Components: Query Planning
Reporter: Vineet Garg
Assignee: Vineet Garg
HIVE-17767 optimized plan to not generate value generator (i.e. an extra join
with outer query to fetch correlated columns) for EQUAL and NOT EQUAL
predicates e.g.
{code:sql}
select * from src b where b.key in (select key from src a where b.value <>
a.value)
{code}
This should be improved and implemented for rest of the predicates e.g. LESS
THAN etc
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