[
https://issues.apache.org/jira/browse/SPARK-2509?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14063084#comment-14063084
]
Takuya Ueshin commented on SPARK-2509:
--------------------------------------
PRed: https://github.com/apache/spark/pull/1428
> Add optimization for Substring.
> -------------------------------
>
> Key: SPARK-2509
> URL: https://issues.apache.org/jira/browse/SPARK-2509
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Takuya Ueshin
>
> {{Substring}} including {{null}} literal cases could be added to
> {{NullPropagation}}.
--
This message was sent by Atlassian JIRA
(v6.2#6252)
