Sort Using Expressions (e.g., salary + bonus)

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Learn how to sort rows in PostgreSQL using expressions like salary + bonus in ORDER BY. Perfect for calculated fields and custom logic!

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Description
In this PostgreSQL tutorial, you’ll learn how to sort rows using expressions in the ORDER BY clause — a powerful technique that lets you sort by calculated values like salary + bonus, rather than raw column data.

We walk through:

How to write expressions in the ORDER BY clause

Sorting by computed totals or derived metrics

Using COALESCE() to handle NULL values in expressions

How to cleanly order by a formula such as salary + COALESCE(bonus, 0)

🔍 This is especially useful when you need to sort by fields that don't exist in the table but are derived at runtime — like total compensation, discounts, or custom scores.

💡 Pro Tip: You can combine this with aliases and DESC to highlight top values (e.g., highest earners in a department).

📌 If you're working on reporting, analytics dashboards, or ranking systems, this lesson is essential for mastering custom sort logic in SQL.

#PostgreSQL #SQL #OrderBy #SQLExpressions #PostgreSQLTutorial #SortByExpression #LearnSQL #DataEngineering #SQLTips #CalculatedFields #BackendDevelopment #PostgreSQLExamples

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