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Posted to issues@spark.apache.org by "Yuming Wang (Jira)" <ji...@apache.org> on 2025/07/19 00:08:00 UTC
[jira] [Assigned] (SPARK-52817) Spark SQL LIKE expressions show poor performance when using multiple '%'
[ https://issues.apache.org/jira/browse/SPARK-52817?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Yuming Wang reassigned SPARK-52817:
-----------------------------------
Assignee: zhixingheyi-tian
> Spark SQL LIKE expressions show poor performance when using multiple '%'
> ------------------------------------------------------------------------
>
> Key: SPARK-52817
> URL: https://issues.apache.org/jira/browse/SPARK-52817
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.5.3
> Reporter: zhixingheyi-tian
> Assignee: zhixingheyi-tian
> Priority: Major
> Labels: pull-request-available
>
>
> ```
> SELECT * FROM testData where value not like '%%HotFocus%%'
> SELECT * FROM testData where value not like '%%%HotFocus%%%'
> ```
>
> In these SQL queries, cannot convert Like expressions to contains function in logical planning. So the performance is very poor.
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