UserDefinedFunction Object

后续版本的 Microsoft SQL Server 将删除该功能。请避免在新的开发工作中使用该功能，并着手修改当前还在使用该功能的应用程序。

The UserDefinedFunction object exposes the attributes of a single user-defined function.

Properties

Methods

备注

With the UserDefinedFunction object, you can:

• Create a Microsoft SQL Server user-defined function.
• Change the definition of an existing SQL Server user-defined function.
• Control access rights to an existing SQL Server user-defined function.
• Delete an existing SQL Server user-defined function.
• Generate a Transact-SQL script to re-create a SQL Server user-defined function.

The Name property of a UserDefinedFunction object uses the SQL Server sysname data type. The value of the Name property must be unique (named by owner) within a SQL Server database.

To create a SQL Server user-defined function

1. Create a UserDefinedFunction object.

2. Set the Name property.

3. Set the Text property to contain the user-defined function.

4. Set optional property values.

5. Add the UserDefinedFunction object to the UserDefinedFunctions collection of a connected Database object.

After a user-defined function is created, you cannot reset the Name property. To change the name of a user-defined function, you must call the Remove method to drop and then re-create the object.

注意：
The UserDefinedFunction object is compatible only with SQL Server 2000 and later.