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nvl

nvl(expr1, expr2) – Returns `expr2` if `expr1` is null, or `expr1` otherwise.

Platforms: WhereOS, Spark, Hive

Class: org.apache.spark.sql.catalyst.expressions.Nvl

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.

View the complete guide of WhereOS functions.

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nvl

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