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Takuya Ueshin commented on SPARK-2504: -------------------------------------- PRed: https://github.com/apache/spark/pull/1426 > Fix nullability of Substring expression. > ---------------------------------------- > > Key: SPARK-2504 > URL: https://issues.apache.org/jira/browse/SPARK-2504 > Project: Spark > Issue Type: Bug > Components: SQL > Reporter: Takuya Ueshin > > This is a follow-up of [#1359|https://github.com/apache/spark/pull/1359] with > nullability narrowing. -- This message was sent by Atlassian JIRA (v6.2#6252)