What is define upsert?

Upsert is a database operation that inserts a new record in the database if the record does not exist, otherwise, it updates the existing record. The term "upsert" is a combination of the words "update" and "insert." It is also referred to as merge, or sometimes as insert-or-update.

Upsert is commonly used in situations where data needs to be consistently and continuously updated. Examples of usage include database management systems, data warehousing, and enterprise software applications.

Upsert is a powerful operation that helps prevent data duplication and eliminates the need for manual intervention to check for existing records before inserting new ones. With the use of upsert, data can be automatically updated and inserted with minimal human input, leading to more efficient workflows and reduced errors.