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https://issues.apache.org/jira/browse/SPARK-12867?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Cheng Lian updated SPARK-12867:
-------------------------------
Assignee: Xiao Li
> Nullability of Intersect can be stricter
> ----------------------------------------
>
> Key: SPARK-12867
> URL: https://issues.apache.org/jira/browse/SPARK-12867
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Reporter: Cheng Lian
> Assignee: Xiao Li
> Priority: Minor
>
> {{Intersect}} doesn't override {{SetOperation.output}}, which is defined as:
> {code}
> override def output: Seq[Attribute] =
> left.output.zip(right.output).map { case (leftAttr, rightAttr) =>
> leftAttr.withNullability(leftAttr.nullable || rightAttr.nullable)
> }
> {code}
> However, we can replace the {{||}} with {{&&}} for intersection.
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