Datatype Property
В будущей версии Microsoft SQL Server эта возможность будет удалена. Избегайте использования этой возможности в новых разработках и запланируйте изменение существующих приложений, в которых она применяется.
The Datatype property exposes the data type name for the referenced column.
object
.Datatype [=value]
- 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
String
Read/write before column creation. Read-only when referencing an existing column.
HRESULT GetDatatype(SQLDMO_LPBSTR pRetVal);
HRESULT SetDatatype(SQLDMO_LPCSTR NewValue);
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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.
AlterDataType Method
Length Property
NumericPrecision Property
NumericScale Property