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https://issues.apache.org/jira/browse/SPARK-56976?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated SPARK-56976:
-----------------------------------
Labels: pull-request-available (was: )
> Support Two-Argument IF(condition, value) Returning NULL
> --------------------------------------------------------
>
> Key: SPARK-56976
> URL: https://issues.apache.org/jira/browse/SPARK-56976
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 5.0.0
> Reporter: Richard Durkee
> Priority: Minor
> Labels: pull-request-available
>
> Currently Spark's IF function requires exactly three arguments:
> {code:java}
> IF(condition, trueValue, falseValue){code}
> The two-argument form, IF(condition, value), returns value when true and NULL
> when false. This is supported by MySQL, Trino/Presto, and BigQuery but
> rejected by Spark with an arity error.
> Although there are many existing ways to express this in Spark, such as
> IF(condition, value, NULL) or CASE WHEN condition THEN value END, the
> two-argument form is more concise and matches user expectations when
> migrating from other SQL engines. This is especially important for automated
> migration.
>
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