Description
Allow a union operation to be specified as <qb1> union <qb2> in addition to th <qb1> union all <qb2>
Common requirement of queries to project two sets where it is not always the case you want distinct rows in the set. Failing to do so obviously will result in the current exception:
mismatched input 'select' expecting ALL near 'union' in query operator
Attachments
Issue Links
- relates to
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HIVE-9039 Support Union Distinct
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- Closed
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