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Length Property

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 Length property specifies the maximum number of characters or bytes accepted by the referenced column or user-defined data type.

语法

object.Length [=value]

Parts

  • object
    An expression that evaluates to an object in the Applies To list

  • value
    A long integer greater than or equal to 1

Data Type

Long

Modifiable

Read/write

Prototype (C/C++)

HRESULT GetLength(LPLONG pRetVal);
HRESULT SetLength(LONG pRetVal);

注释

For SQL Distributed Management Objects (SQL-DMO) objects referencing columns and user-defined data types defined on character data types, such as char and nchar, interpret the Length property as a number of characters. For objects referencing columns and user-defined data types defined on binary data types, such as varbinary, interpret the Length property as a number of bytes.