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Articles with tag Advanced T-SQL Rss

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Stairway to Advanced T-SQL Level 3: Understanding Common Table Expressions (CTEs)

A CTE is a temporary result set defined by a simple query, and is used within the execution scope of a single INSERT, UPDATE, DELETE, or SELECT statement. In this article we will explore how to define and use CTE's.  Read more...
By 2015/03/18 | Source: SQLServerCentral.com | Category: stairway series
Rating: |  Discuss |   Briefcase | 9,763 reads

Stairway to Advanced T-SQL Level 2: Using the APPLY Operator

The APPLY operator allows you to join a record set with a function, and apply the function to every qualifying row of the table (or view). The APPLY operator takes on two formats: CROSS APPLY, or OUTER APPLY. This article will explain the differences between these two formats, and show you examples of how each of these formats work.  Read more...
By Gregory Larsen 2015/01/28 | Source: SQLServerCentral.com | Category: stairway series
Rating: |  Discuss |   Briefcase | 10,470 reads

Stairway to T-SQL: Beyond The Basics Level 5: Storing Data in Temporary Tables

There are times when retrieving data for complex business requirement requires you to temporarily store one or more results sets for a short period of time. Typically these temporary tables are stored in the scope of the current connection, but they may also need to be available across multiple connections.   Read more...
By Gregory Larsen 2014/04/02 | Source: SQLServerCentral.com | Category: stairway series
Rating: |  Discuss |   Briefcase | 9,462 reads

Stairway to T-SQL: Beyond The Basics Level 4: Using Views to Simplify Your Query

This level discusses how to use a database VIEW to simplify your Transact-SQL(T-SQL) code. By understanding how to use a VIEW you will be able to better support writing T-SQL code to meet complex business requirements. In this article I will be discussing what a database VIEW is and then providing a number of examples to help you understand how you can use a VIEW to implement different coding scenarios.  Read more...
By Gregory Larsen 2014/03/19 | Source: SQLServerCentral.com | Category: stairway series
Rating: |  Discuss |   Briefcase | 8,617 reads
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