feat(spark): support Union All #301
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Supports the “UNION ALL” clause for Spark SQL Signed-off-by: Andrew Coleman <[email protected]>
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First part of the implementation of the
Setrelation in the spark module.This PR only adds
UNION_ALLcapability, but that enablessupport for the “UNION ALL” clause for Spark SQL, increasing the
number of successful TPC-DS tests.