Zhong Wang created SPARK-13337:
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Summary: DataFrame join-on-columns function should support
null-safe equal
Key: SPARK-13337
URL: https://issues.apache.org/jira/browse/SPARK-13337
Project: Spark
Issue Type: Improvement
Affects Versions: 1.6.0
Reporter: Zhong Wang
Priority: Minor
Currently, the join-on-columns function:
<code>
def join(right: DataFrame, usingColumns: Seq[String], joinType: String):
DataFrame
<code>
performs a null-insafe join. It would be great if there is an option for
null-safe join.
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