Towards Data Science 11:23 am on May 22, 2024
CTEs (Common Table Expressions) in SQL are temporary named result sets used for intermediate data derived from other queries. They allow referencing the CTE within a single query to perform complex operations.
- Definition: Temporary result sets in SQL, referenced multiple times within one query.
- Use Case: Intermediate data processing for complex queries.
- Reusability: Can be used repeatedly in the same or different statements.
- Clarity and Maintenance: Increase readability, simplifying maintenance by breaking down complex queries into simpler CTEs.
- Query Performance: Can help improve query performance when properly utilized.
https://towardsdatascience.com/sql-explained-common-table-expressions-fc23e4675890
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