What is the method for generating unique primary keys in Hive?

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.