Επεξεργασία

Κοινή χρήση μέσω

OracleBFile.Null Field

  • Reference

Definition

Namespace:
System.Data.OracleClient
Assembly:
System.Data.OracleClient.dll

Represents a null OracleBFile object that is not bound to a physical file.

public: static initonly System::Data::OracleClient::OracleBFile ^ Null;
public static readonly System.Data.OracleClient.OracleBFile Null;
 staticval mutable Null : System.Data.OracleClient.OracleBFile
Public Shared ReadOnly Null As OracleBFile

Field Value

OracleBFile

Remarks

Null can be useful when you want to perform a comparison operation on an OracleBFile to determine nullability.

Any attempt to perform a read operation on a Null object succeeds, but does not return any data. Any attempt to perform a write operation on a Null object generates an exception. Selecting a BFILE column that contains a null value returns Null.

Applies to