THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
...
UDFs are powerful capability that extends the classical SQL functionality with custom code, that the Hive user can utilize. Hive has a bunch of built-in UDFs that you can utilize. Like other SQL-based solutions, Apache Hive also provides functionality to extend the current - rich- UDF set with custom if needed.
| Tipnote | ||
|---|---|---|
| ||
Important to mention. Every UDF's evaluate method is one row at a time! Which This means if your UDF's UDFs has complex code, it could introduce performance issue in execution time. |
...