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SQL 2014 Developer, Part 11 of 13: Complex Querying
with expert Frank Tillinghast
We’ll start off by discussing the specifics of a topic you might not expect—handling NULLs! I know it sounds surprising, but it’s important to really understand how to work with NULL values—especially if you plan to integrate with the Common Language Runtime. Next, we’ll address another common and seemingly straightforward task—the ranking of data. We’ll explore the specifics of how to rank grouped data using some T-SQL functions including ROW_NUMBER, RANK, DENSE_RANK, and NTILE. Next we’ll take a look at how to identify correlated subqueries and how you can possibly replace them with more efficient constructs. Finally, we’ll look at an alternative to subqueries, derived tables, and temporary tables—known as Common Table Expressions, or CTEs, they are similar to derived tables but they are self-referencing, can be used numerous times within the same query, and can be called recursively!
Advanced | 1h 15m | June 05, 2015Course Outline
Frank Tillinghast is a senior consultant with MTOW Software Solutions. He is a Microsoft Certified Solution Developer and has been developing applications for over 15 years. Most of his time is spent consulting for companies nationwide with troubled projects or mentoring projects to successful completion. When he is not developing software or mentoring clients, Frank is teaching other developers. He has taught thousands of application developers how to create business solutions with Visual Studio .NET. VB.NET, ASP.NET, Visual C#, and SQL Server.