Datatype Property
Dieses Feature wird in einer zukünftigen Version von Microsoft SQL Server entfernt. Verwenden Sie dieses Feature beim Entwickeln neuer Anwendungen nicht, und planen Sie das Ändern von Anwendungen, in denen es zurzeit verwendet wird.
The Datatype property exposes the data type name for the referenced column.
Syntax
object
.Datatype [=value]
Parts
- object
An expression that evaluates to an object in the Applies To list
- value
A text string that identifies a Microsoft SQL Server system or user-defined data type
Data Type
String
Modifiable
Read/write before column creation. Read-only when referencing an existing column.
Prototype (C/C++)
HRESULT GetDatatype(SQLDMO_LPBSTR pRetVal);
HRESULT SetDatatype(SQLDMO_LPCSTR NewValue);
.gif "ms135165.note(de-de,SQL.90).gif") Hinweis: |
|---|
| SQL Distributed Management Objects (SQL-DMO) strings are always returned as OLE BSTR objects. A C/C++ application obtains a reference to the string. The application must release the reference using SysFreeString. |
Hinweise
The Datatype property may not completely define the data type of a column. Columns requiring width specification, such as varchar, or specification of scale and precision, such as decimal, are defined using the Datatype property in concert with Length, NumericPrecision, and NumericScale properties.
Use the AlterDataType method to change the data type of an existing column.
Applies To:
Siehe auch
Verweis
AlterDataType Method
Length Property
NumericPrecision Property
NumericScale Property