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Learn how casting works with Domain Types in PostgreSQL, when constraints re-check, and tips for safe type conversions.

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Description
In this video, we dive into casting operations on Domain Types in PostgreSQL and uncover some powerful tricks you need to know. 🐘✨

You’ll learn:
🔹 How PostgreSQL automatically downcasts Domains to their base type during operations
🔹 Why constraints are not always rechecked after calculations
🔹 How to explicitly cast back to your Domain to reapply validation rules
🔹 Practical examples where improper casting can break your data rules

We’ll start with a Domain type example, run queries that perform arithmetic on Domain values, and show you how casting changes the validation process. You’ll also see pro tips on ensuring that constraints always apply when they should.

By the end, you’ll know exactly when and how to cast values in PostgreSQL Domains to keep your database safe and your rules enforced.

#PostgreSQL #SQL #DatabaseDesign #LearnPostgreSQL #PostgresTips #SQLTutorial #DatabaseDevelopment #DBA #BackendDevelopment #SoftwareEngineering #PostgreSQLCasting

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