SQL CLR: Difference between revisions

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{{short description|Technology for hosting of the Microsoft .NET common language runtime engine within SQL Server.}}
'''SQL CLR''' or '''SQLCLR''' ([[SQL]] [[Common Language Runtime]]) is technology for hosting of the Microsoft .NET common language runtime engine within SQL Server. The SQLCLR allows [[managed code]] to be hosted by, and run in, the [[Microsoft SQL Server]] environment.

This technology, introduced in Microsoft SQL Server 2005, allow users for example to create the following types of managed code objects in SQL Server in .NET languages such as [[C Sharp (programming language)|C#]] or [[VB.NET]].

*[[Stored procedure]]s (SPs) which are analogous to ''procedures'' or ''void functions'' in procedural languages like VB or C,

*[[Database trigger|triggersTriggers]] which are stored procedures that fire in response to [[Data Manipulation Language]] (DML) or [[Data Definition Language]] (DDL) events,

*[[User-defined function]]s (UDFs) which are analogous to functions in procedural languages,

*[[User-defined aggregate]]s (UDAs) which allow developers to create custom aggregates that act on sets of data instead of one row at a time,

*[[User-defined type]]s (UDTs) that allow users to create simple or complex data types which can be serialized and deserialized within the database.

The SQL CLR relies on the creation, deployment, and registration of .NET[[Assembly (CLI)|CLI ''assemblies'']], which are physically stored in managed code dynamic load libraries (DLLs). These assemblies may contain .NETCLI namespaces, classes, functions and properties.

==External links==

* [httphttps://msdn2docs.microsoft.com/en-us/librarysql/ms345136.aspxrelational-databases/clr-integration/common-language-runtime-integration-overview MSDNMicrosoft Docs: UsingCommon CLRLanguage Runtime Integration inOverview] SQL(Latest Server 2005]version)

* [http://forumsmsdn2.microsoft.com/MSDNen-us/library/ShowForumms345136.aspx?ForumID=86&SiteID=1 MSDN: ForumUsing onCLR .NET FrameworkIntegration in SQL Server 2005] (Provides the perspective at the time of the initial release.)

* [http://blogs.msdn.com/sqlclr/ SQL CLR Team Blog (No posts since 2006, might be dead)]

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