How to create a unique primary key values for each record.
Hi All, i have job reading product_id's and call api then each product will have N of reviews. currently we don't have unique column (So i need a primary key in my table) my end destination is hadoop/hive table. can you please suggest me a best option to generate unique key values in table for new column (what processor i can use to generate a row number for each record).
Thank You.