Please use this tag for user defined functions (UDF) for apache hive.
Apache Hive is a database built on top of Hadoop that provides the following:
- Tools to enable easy data summarization (ETL)
- Ad-hoc querying and analysis of large datasets data stored in Hadoop file system (HDFS)
- A mechanism to put structure on this data
- An advanced query language called Hive Query Language which is based on SQL and some additional features such as DISTRIBUTE BY, TRANSFORM, and which enables users familiar with SQL to query this data.
How to write good Hive question:
- Add clear textual problem description.
- Provide query and/or table DDL if applicable
- Provide exception message
- Provide input and desired output data example
- Questions about query performance should include EXPLAIN query output.
- Do not use pictures for SQL, DDL, DML, data examples, EXPLAIN output and exception messages.
- Use proper code and text formatting
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