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Zhong Wang commented on SPARK-13337: ------------------------------------ The current join method with usingColumns argument generates result like TableC. The limitation is that it doesn't support null-safe join. > 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 > Components: SQL > 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. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org