A Common Table Expression (CTE) in SQL is a temporary result set defined within a query, aiding in the simplification of complex queries and improving code readability. CTEs are created using the 'WITH' keyword and are accessible only during the execution of the particular query. They allow for the reuse of the result set multiple times within the same query.

2. SQL CTE Tutorial

3. What is CTE in SQL
A Common Table Expression (CTE) in SQL is a temporary result
set that you can define within a query. It helps to break down
complex queries, make the code more readable, and allows you
to reuse the result set multiple times within the same query.
What is CTE in SQL?

4. What is CTE in SQL
CTEs are defined using the WITH keyword, followed by the CTE
name and the query that generates the result set. The CTE is only
available during the execution of that specific query.
What is CTE in SQL?