October 2008
Beginner to intermediate
1024 pages
31h 30m
English
Content preview from Programming Microsoft® SQL Server™ 2008Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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CLR Functions
Let’s take everything we’ve discussed about SQL CLR stored procedures and deployment and apply it to SQL CLR functions. As any programmer knows, a function is a procedure that returns a value (or an object). Mainstream .NET functions typically return .NET types. SQL CLR functions, on the other hand, must return a SqlType. So to start with, we need to make sure that our classes that implement SQL CLR functions import the System.Data.SqlTypes namespace with a using statement. The SQL Server Project template for User-Defined Functions contains the appropriate using statement by default; you will need to add the statement manually to standard Class Library class code.
Once the namespace is imported, you can write the functions themselves. ...
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