MaximumLength 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 MaximumLength property identifies the greatest length of a data type in bytes, or the precision of the type.
语法
object
.MaximumLength
Parts
- object
An expression that evaluates to an object in the Applies To list
Data Type
Long
Modifiable
Read-only
Prototype (C/C++)
HRESULT GetMaximumLength(LPLONG pRetVal);
注释
For binary and character data types, the MaximumLengthproperty identifies the greatest number of bytes required to store a string of the type. For example, the SystemDatatypeobject referencing the varchar data type reports 8,000. The varchar data type can contain up to 8,000 bytes of data. The number of characters contained in the string is determined by the mix of single and multibyte characters within it.
For the fixed-precision, numeric data types, the MaximumLength property specifies the maximum precision of the type.
For all other referenced data types, the MaximumLengthproperty identifies the number of bytes required to store a value of the type in a Microsoft SQL Server structure representing the type.