Upsert Operation in SQL - Can it be done better?

In the article on Antonza's website, the author explains the upsert technique in SQL, which is crucial for updating data in databases. Upsert combines two operations: inserting (insert) and updating (update). This allows programmers to either insert a new record into the database or update an existing record if it already exists. The author discusses various approaches to upsert, including the use of the MERGE command and INSERT ON CONFLICT in databases like PostgreSQL. Demonstrations are supported by practical examples, enabling a deeper understanding of this feature. The code examples clearly show how to implement upsert in different database scenarios.