Determining the progress of a database restore process

A useful script for determining the progress of a database restore process.

SELECT  r.session_id,r.command,
	r.start_time,
	CONVERT(NUMERIC(6,2),r.percent_complete) AS [Percent Complete],
	CONVERT(VARCHAR(20),DATEADD(ms,r.estimated_completion_time,GetDate()),20) AS [ETA Completion Time],
	CONVERT(NUMERIC(10,2),r.total_elapsed_time/1000.0/60.0) AS [Elapsed Min],
	CONVERT(NUMERIC(10,2),r.estimated_completion_time/1000.0/60.0) AS [ETA Min],
	CONVERT(NUMERIC(10,2),r.estimated_completion_time/1000.0/60.0/60.0) AS [ETA Hours],
	CONVERT(VARCHAR(1000),
	(
		SELECT SUBSTRING(text,r.statement_start_offset/2,
			CASE  WHEN r.statement_end_offset = -1 THEN 1000  ELSE (r.statement_end_offset-r.statement_start_offset)/2  END)
		FROM sys.dm_exec_sql_text(sql_handle))
	)
	FROM sys.dm_exec_requests r WHERE command IN ('RESTORE DATABASE','BACKUP DATABASE')

and here is what the script outputs: