A CTE (Common Table Expression) is a temporary result set that you can reference within a SELECT, INSERT, UPDATE, or DELETE statement. All your CTEs should be defined before the MERGE operation /* ...

When dealing with complex SQL queries, you might wonder whether to use Common Table Expressions (CTEs) or subqueries to optimize performance. Both methods can simplify queries by breaking them ...

Common Table Expressions (CTEs) are a feature of SQL that allow you to define a temporary named result set that can be referenced within a SQL statement. CTEs provide a way to break down complex SQL ...