Petar Vasiljevic created SPARK-49164:
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Summary: 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
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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