CLR-Typen des SQL Server-Systems 10.0.1600.22

In-Depth Review of CLR Types in SQL Server

SQL Server's integration of the Common Language Runtime (CLR) introduces powerful capabilities for developers, enabling the execution of .NET Framework code directly within the database environment. This feature enhances flexibility and performance for complex processing tasks.

Exploring Core CLR Types in SQL Server

The system supports four primary CLR types that extend the traditional T-SQL functionalities:

• CLR Stored Procedures: Stored procedures implemented with .NET code, stored within the database and invoked via the EXECUTE statement. These procedures can access external resources such as files and network services, allowing for more intricate operations than standard T-SQL procedures.
• CLR User-Defined Functions (UDFs): Custom functions created using .NET that can be embedded within queries, providing a higher level of customization and reusability. They seamlessly integrate with existing SQL commands, making complex calculations more manageable.
• CLR Triggers: Event-driven scripts that respond to specific database events like data modifications or schema changes. These triggers execute .NET code, enabling sophisticated automation and enforcement of business rules.
• CLR Aggregates: Custom aggregate functions written in .NET, capable of performing advanced calculations over result sets. They expand the analytical capabilities of SQL Server beyond the built-in functions.

Registration and Usage

Before utilizing any CLR type, it must be registered on the server using the CREATE ASSEMBLY statement, which loads the compiled .NET assemblies into SQL Server. Once registered, these CLR objects are used just like native T-SQL objects, offering an integrated development experience.

Advantages of Using CLR Types

• Enhanced performance for complex logic
• Expanded functionality beyond T-SQL limitations
• Seamless integration of .NET capabilities
• Improved maintainability and reusability of code