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Learnnowonline SQL 2012 Developer Complex Querying

Learnnowonline SQL 2012 Developer Complex Querying crack

Course description

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!

Prerequisites

This course assumes that you have a basic familiarity with the concept of relational databases and a basic understanding of what SQL Server is and the high-level tools in it, as well as how to create and manage objects using Management Studio. You should also have a basic understanding of how SQL Server implements security, including its authentication and authorization schemes, and how to assign permissions on securable objects to principals. You should know the fundamentals of Transact-SQL to write queries to retrieve and update data, and how to execute scripts using the query editor in Management Studio. It will be very helpful, but not absolutely necessary, to have experience with .NET development using Visual Studio 2010 or 2012 for the portions of the course that deal with SQLCLR development. The .NET code included in this course is written in C#, but if you prefer Visual Basic it should be fairly easy to convert the code.

در این آموزش تصویری با نحوه نوشتن و اجرای کوئری های پیچیده در SQL 2012 آشنا می شوید.

این دوره آموزشی محصول موسسه LearnNowOnline است.

سرفصل های این دوره:

  • کوئری های پیچیده
  • مقدمه
  • کار با مقادیر NULL
  • انواع SqlTypes و CLR
  • ANSI_NULLS
  • NULLs و SqlBoolean
  • تعیین مقادیر NULL
  • ادغام CLR
  • رتبه بندی
  • رتبه بندی داده های گروه بندی شده
  • تابع ROW_NUMBER
  • تابع RANK
  • تابع DENSE_RANK
  • SubQuerie ها
  • نوشتن Subquerie های همبسته
  • مبانی Subquery
  • Subqueries و Updates
  • عبارات مشترک جدول
  • استفاده از جدول مشترک عبارات

عنوان دوره: Learnnowonline SQL 2012 Developer Complex Querying

مدت دوره: 1 ساعت و 15 دقیقه

نویسنده: Frank Tillinghast

سطح: پیشرفته

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