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nvl2(expr1, expr2, expr3) – Returns `expr2` if `expr1` is not null, or `expr3` otherwise.
Platforms: WhereOS, Spark, Hive
Class: org.apache.spark.sql.catalyst.expressions.Nvl2

More functions can be added to WhereOS via Python or R bindings or as Java & Scala UDF (user-defined function), UDAF (user-defined aggregation function) and UDTF (user-defined table generating function) extensions. Custom libraries can be added on via Settings-page or installed from WhereOS Store.

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