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https://issues.apache.org/jira/browse/SPARK-33527?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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jiaan.geng updated SPARK-33527:
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Issue Type: New Feature (was: Bug)
> Extend the function of decode so as consistent with mainstream databases
> ------------------------------------------------------------------------
>
> Key: SPARK-33527
> URL: https://issues.apache.org/jira/browse/SPARK-33527
> Project: Spark
> Issue Type: New Feature
> Components: SQL
> Affects Versions: 3.1.0
> Reporter: jiaan.geng
> Priority: Major
>
> In Spark, decode(bin, charset) - Decodes the first argument using the second
> argument character set.
> Unfortunately this is NOT what any other SQL vendor understands DECODE to do.
> DECODE generally is a short hand for a simple case expression:
> {code:java}
> SELECT DECODE(c1, 1, 'Hello', 2, 'World', '!') FROM (VALUES (1), (2), (3)) AS
> T(c1)
> =>
> (Hello),
> (World)
> (!)
> {code}
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