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https://issues.apache.org/jira/browse/SPARK-27679?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-27679:
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Assignee: Apache Spark
> Improve queries with LIKE expression
> ------------------------------------
>
> Key: SPARK-27679
> URL: https://issues.apache.org/jira/browse/SPARK-27679
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.4.3
> Reporter: Achuth Narayan Rajagopal
> Assignee: Apache Spark
> Priority: Major
>
> The following improvements are possible when simplifying `LIKE` expressions -
> # In the case where pattern is `null` replace like expression with
> Literal(`false`), so in cases where applicable we can replace the underlying
> relation with `LocalRelation <empty>`.
> # Add support for underscore case optimization similar to '%'.
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