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https://issues.apache.org/jira/browse/SPARK-49164?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Max Gekk resolved SPARK-49164.
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Fix Version/s: 4.0.0
Resolution: Fixed
Issue resolved by pull request 47669
[https://github.com/apache/spark/pull/47669]
> Fix not NullSafeEqual in predicate of SQL query in JDBC Relation
> ----------------------------------------------------------------
>
> Key: SPARK-49164
> URL: https://issues.apache.org/jira/browse/SPARK-49164
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 4.0.0
> Reporter: Petar Vasiljevic
> Assignee: Petar Vasiljevic
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.0.0
>
>
> There is a bug in the evaluation of <=> (NullEqualSafe) in
> V2ExpressionSQLBuilder.scala. If there was a predicate like
> where not str <=> 'abc' and if there are null values in the table, null
> tables are not returned even though they should. The issue is in how <=> is
> translated to SQL string therefore producing wrong results.
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