POSTGRESQL DATABASE INTERVIEW QUESTIONS
What is the purpose of the UPDATE statement in PostgreSQL?
What happens if you omit the WHERE clause in an UPDATE statement?
Can you update multiple columns in a single UPDATE statement?
How does the RETURNING clause work in an UPDATE statement?
What is the significance of using a subquery in the SET clause of an UPDATE statement?
Explain how the UPDATE statement works with joins in PostgreSQL.
How can you use CTEs (Common Table Expressions) with an UPDATE statement?
What are the performance implications of updating large tables, and how can you optimize these operations?
Describe the use of the WHERE CURRENT OF clause in an UPDATE statement within a cursor.
How does PostgreSQL handle concurrency and locking during an UPDATE operation, and what strategies can you use to avoid deadlocks?
What is the purpose of the UPDATE statement in PostgreSQL?
What is data masking, and how is it relevant to the UPDATE statement in PostgreSQL?
How can you use the UPDATE statement for conditional data masking?
How do you combine UPDATE with functions for dynamic data masking in PostgreSQL?
What are best practices for using UPDATE statements for data masking in PostgreSQL?