SET NOCOUNT ON
-- SQL Server 2000
USE ProfilerTest;
GO
UPDATE a
SET TextData = 'Not Applicable2'
FROM dbo.ProfilerResults3 a
INNER JOIN dbo.ProfilerResults3 b
	ON a.RowNumber = b.RowNumber
WHERE a.RowNumber = b.RowNumber 
AND a.EventClass = b.EventClass 
AND a.ApplicationName = b.ApplicationName;
GO

SELECT * 
FROM dbo.ProfilerResults3;
GO