What is CTE? Advantages


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SQL Server - What is CTE?

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SQL Server - What is CTE? Advantages - Feb 27, 2010 at 11:50 AM by Shuchi Gauri

What is CTE? Advantages

Common table expressions are temporary result sets which is defined within the execution scope of a single SELECT, INSERT, UPDATE, DELETE OR CREATE VIEW statement. It’s like a derived table which lasts only as long as the session of the query.

Advantages of CTE:

  • Can be used to create a recursive query.
  • Can be substituted for a view
  • Allow grouping by a column which might be derived from a scalar subset
  • Can reference itself multiple times

SQL Server - What is CTE? Advantages - May 05, 2009 at 22:00 PM by Rajmeet Ghai

What is CTE? Advantages

CTE is Common Table Expression. It is a temporary result set for an INSERT, UPDATE or a SELECT query. The result set lasts only until the execution of the query. 

  • Can be referenced multiple times in a query.
  • Can be used to create recursive queries.
  • Can be used in place of a view in scenarios when the metadata definition need not be stored.
  • Improves readability.


WITH expression_name [ ( column_name [,...n] ) ] 
( CTE_query_definition )  

SQL Server - What is CTE? - May 18, 2009 at 10:00 AM by Rajmeet Ghai

What is CTE?

Common Table Expression is used to store temporary results of single SELECT, INSERT, UPDATE, DELETE, or CREATE VIEW statement defined within the execution scope. Even though it lasts until the execution of query, it can be self referenced multiple times in the same query. CTE allows query to be single SELECT, INSERT, UPDATE, DELETE, or CREATE VIEW statement to improve readability. CTE be used to replace a view which stores the metadata.

SQL Server - What is CTE? - June 21, 2009 at 09:00 AM by Amit Satpute

CTE: Common Table Expressions

  • CTEs help improve readability of the code without compromising performance.
  • They help improve maintainability of the code without compromising performance.
  • They make writing recursive code in T-SQL significantly easier than the previous SQL Server versions.


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