What is a main benefit of using a Common Table Expression (CTE) with WITH?

Problem Statement

Explanation

A CTE lets you break logic into steps and reuse names in a single statement. It makes complex queries easier to read and maintain. Performance is engine dependent. A CTE may inline like a subquery, or materialize. Treat it as a clarity tool first.

Code Solution

SolutionRead Only

WITH recent AS (
  SELECT * FROM orders WHERE order_date >= '2025-01-01'
)
SELECT customer_id, COUNT(*) FROM recent GROUP BY customer_id;

Practice Sets

This question appears in the following practice sets:

Subqueries & CTEs (incl. Recursive)

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What is a main benefit of using a Common Table Expression (CTE) with WITH?

Problem Statement

Explanation

Code Solution

Practice Sets

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What is a main benefit of using a Common Table Expression (CTE) with WITH?

Problem Statement

Explanation

Code Solution

Practice Sets

Related Questions

Which SQL statement retrieves all columns and rows from a table named employees?

Which clause filters rows before aggregation and affects which rows are grouped?

What is the default sort order when ORDER BY is used without ASC or DESC?

Which construct is commonly used to paginate results in SQL engines like Postgres and MySQL?

Which predicate correctly checks for missing values in standard SQL?

More from SQL & Databases

Master Interviews
Anywhere, Anytime