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Liang-Chi Hsieh commented on SPARK-12542:
-----------------------------------------
I think we may need to wait for SPARK-12362 getting done first. Because suppose it will add
all lacking functions of SQL parser (not just this JIRA but also others to support SQL syntax).
> Support intersect/except in SQL
> -------------------------------
>
> Key: SPARK-12542
> URL: https://issues.apache.org/jira/browse/SPARK-12542
> Project: Spark
> Issue Type: New Feature
> Components: SQL
> Reporter: Davies Liu
>
> Also `UNION ALL`in Hive SQL parser
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