Introduction
Basic CTEs
Summary
14. Summary

Instruction

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  • The basic syntax for CTEs in SQL Server is:
    WITH CteName1 (Cte1Columns) AS (
      YourCte1
    ),
    CteName2 (Cte2Columns) AS (
      YourCte2
    ),
    ...
    
    SELECT ...
    
  • CTEs are placed at the start of the query. They are introduced with WITH.
  • You can skip column definitions if you provide aliases for columns containing aggregates and other function results.
  • CTEs are temporary sets of rows similar to subqueries. Thanks to them, your query becomes better organized and easier to read.

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Exercise

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