Vineet Garg created HIVE-16367:
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Summary: Null-safe equality <=> operator is not support with CBO
Key: HIVE-16367
URL: https://issues.apache.org/jira/browse/HIVE-16367
Project: Hive
Issue Type: Improvement
Reporter: Vineet Garg
Assignee: Vineet Garg
Calcite doesn't support such equality operator so hive bails out and goes
through non-cbo path. This could restrict such operators with subqueries and
other cbo only features.
Since {{<=>}} is equivalent to {{is not distinct from}} (HIVE-15986) we can
rewrite {{<=>}} to {{is not distinct from}} and enable CBO.
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