Summary
This tutorial provided a practical foundation for filtering and retrieving data in PostgreSQL using the WHERE clause and subqueries.
You should now be able to apply various filtering techniques with comparison, logical, and pattern-matching operators, use built-in functions like EXTRACT, NOW(), and CAST and write subqueries to create layered and dynamic queries.
By mastering these concepts, you're equipped to perform precise data selection and complex manipulations for real-world scenarios in PostgreSQL.