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Over 250 pages of Common Table Expression lessons! Download your FREE copy today! The Common Table Expression (CTE) is one of the more powerful and often overlooked features in Microsoft SQL Server. This book will show some of the more interesting things you can do with a CTE. You will learn how CTEs are a great alternative to derived table …
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Here is a quick CTE that can be used to generate all the dates in a range. This is handy to use when trying to find dates missing from a set, you can outer join to it, or union with it to fill in the blanks. Download my book for FREE when you sign up for my mailing list. Receive …
After my CTE presentation a while back I was asked many questions, and received several great suggestions from people. One question was how does the performance compare between a recursive CTE to generate a hierarchical tree path listing and a query using self JOINs and UNION ALL to generate similar results. To test this I created a simple table …
The following is chapter 7 from my Common Table Expressions book in its entirety. I can remember the first time that I worked on data paging code. I had to page through web site search results 20 at a time on a given web page. My task was to understand how it had been written and to do some bug fixing. After reviewing …
The following is chapter 6 from my Common Table Expressions book in its entirety. READER NOTE: Please run the CTEBookSetup.sql script in order to follow along with the examples in this chapter. The script mentioned in this chapter is available at http://SteveStedman.com. Thinking of the proverb “two heads are better than one” makes me think, it really depends on the people. Two people working together are …
As part of the CTE book there is a sample database that all the queries use. You can download the create script for that sample database here and run it in your local SQL Server, or on a test SQL Server: Due to the security settings of the web site, and many download checks, I was unable to anme the …