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Mastering Common Table Expression or CTE in SQL Server

WITH common_table_expression (Transact-SQL) Summary:  From this post you will learn about Common Table Expression or   CTE  in SQL Server using the with Clause.  About  CTE  Statement:  Specifies a temporary named result set, known as a common table expression (CTE). This is derived from a simple query and defined within the execution scope of a single SELECT , INSERT , UPDATE , DELETE or MERGE statement. A common table expression can include references to itself. This is referred to as a recursive common table expression.  Syntax: [ WITH <common_table_expression> [ ,...n ] ]   <common_table_expression>::=       expression_name [ ( column_name [ ,...n ] ) ]       AS       ( CTE_query_definition )   Arguments expression_name Is a valid identifier for the common table expression. expression_name must be different from the name of any other common table...
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