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Introducing SQL User-Defined Functions
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A user-defined function (UDF) is a means for a user to extend the native capabilities of Apache Spark™ SQL. Spark SQL has supported external user-defined functions written in Scala, Java, Python and R programming languages since 1.3.0. While external UDFs are very powerful, they also come with a few caveats: Security. A UDF written in... The post Introducing SQL User-Defined Functions appeared first on Databricks.
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