is_nan(x) – Determine if x is not-a-number.

Platforms: WhereOS, Spark, Hive
Class: hivemall.tools.math.IsNanUDF

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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