Explain the difference between Hive built-in functions and User-Defined Functions.
- Built-in functions are pre-defined in Hive
- Built-in functions optimization
- User-Defined Functions
- User-Defined Functions management
Built-in functions and User-Defined Functions serve different purposes in Hive. Built-in functions are pre-defined and readily available, while User-Defined Functions are custom functions created by users to fulfill specific requirements. Understanding this difference is crucial for optimizing query performance and extending Hive's functionality.
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