Sets the interface pointer of a stream object containing a command.
HRESULT SetCommandStream (
Specifies the type of stream object representing the command.
Specifies the dialect of the command.
If this parameter is set to DBGUID_DEFAULT, the provider uses its default dialect.
Pointer to a stream object of a type specified by riid.
If pCommandStream is a null pointer, the specification of the current command stream object is cleared and the command is put in an initial state.
The method succeeded.
A provider-specific error occurred.
One of the following occurred:
The provider did not support the dialect specified in rguidDialect.
The output stream returned by a previous call to ICommand::Execute is still open. Release that stream before calling this method.
ICommand::Execute uses the last command set by either ICommandStream::SetCommandStream or ICommandText::SetCommandText.
If the command is contained in a stream, ICommand::Execute uses the stream object specified at the time SetCommandStream was called, even if that stream object is subsequently modified by other means.
A provider may or may not support the same set of dialects (rguidDialect) on ICommandStream::SetCommandStream as are supported on ICommandText::SetCommandText.