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
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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.
Syntax:
WITH expression_name [ ( column_name [,...n] ) ]
AS
( 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.
Also read
Answer - Stored procedures provide performance benefits through
local storage, precompiling the code, and caching......
Overview of integration of CLR with SQL Server.
Advantages of CLR integration.
What are the steps to take to improve performance of a poor performing query?
What is a deadlock and what is a live lock? How will you go about resolving
deadlocks?
What is blocking and how would you troubleshoot it?.............
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