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https://issues.apache.org/jira/browse/SPARK-41452?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-41452:
------------------------------------
Assignee: Apache Spark
> to_char throws NullPointerException when format is null
> -------------------------------------------------------
>
> Key: SPARK-41452
> URL: https://issues.apache.org/jira/browse/SPARK-41452
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.4.0
> Reporter: Bruce Robbins
> Assignee: Apache Spark
> Priority: Major
>
> Example:
> {noformat}
> spark-sql> select to_char(454, null);
> [INTERNAL_ERROR] The Spark SQL phase analysis failed with an internal error.
> You hit a bug in Spark or the Spark plugins you use. Please, report this bug
> to the corresponding communities or vendors, and provide the full stack trace.
> org.apache.spark.SparkException: [INTERNAL_ERROR] The Spark SQL phase
> analysis failed with an internal error. You hit a bug in Spark or the Spark
> plugins you use. Please, report this bug to the corresponding communities or
> vendors, and provide the full stack trace.
> ...
> Caused by: java.lang.NullPointerException
> at
> org.apache.spark.sql.catalyst.expressions.ToCharacter.numberFormat$lzycompute(numberFormatExpressions.scala:227)
> at
> org.apache.spark.sql.catalyst.expressions.ToCharacter.numberFormat(numberFormatExpressions.scala:227)
> at
> org.apache.spark.sql.catalyst.expressions.ToCharacter.numberFormatter$lzycompute(numberFormatExpressions.scala:228)
> at
> org.apache.spark.sql.catalyst.expressions.ToCharacter.numberFormatter(numberFormatExpressions.scala:228)
> at
> org.apache.spark.sql.catalyst.expressions.ToCharacter.checkInputDataTypes(numberFormatExpressions.scala:236)
> {noformat}
> Compare to {{to_binary}}:
> {noformat}
> spark-sql> SELECT to_binary('abc', null);
> NULL
> Time taken: 3.097 seconds, Fetched 1 row(s)
> spark-sql>
> {noformat}
> Also compare to {{to_char}} in PostgreSQL 14.6:
> {noformat}
> select to_char(454, null) is null as to_char_is_null;
> to_char_is_null
> -----------------
> t
> (1 row)
> {noformat}
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