Generate Hive Primary Keys: UDF & Built-in Methods

One common way to generate unique primary keys in Hive is by using User Defined Functions (UDF). You can create a custom function to generate unique primary key values, such as using UUID or timestamps to create unique identifiers.

Moreover, unique primary key values can be generated using Hive’s built-in functions, such as using the ROW_NUMBER() function to assign a unique sequence number to each row record.

In general, generating unique identifiers in Hive is commonly achieved by using custom functions or built-in functions.