http://blogs.msdn.com/b/psssql/archive/2009/01/22/how-it-works-statistics-sampling-for-blob-data.aspxI worked on an interesting issue today and the outcome deserves a post.&#160; The issue was that when auto update statistics executed the query went from 6 seconds to 6+ minutes. select count(*) from tblImageData where blobData is null Turing on the SPen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.msdn.com/b/psssql/archive/2009/01/22/how-it-works-statistics-sampling-for-blob-data.aspx#9370622Thu, 22 Jan 2009 23:50:10 GMT91d46819-8472-40ad-a661-2c78acb4018c:9370622Anith &raquo; How It Works: Statistics Sampling for BLOB data<p>PingBack from <a rel="nofollow" target="_new" href="http://www.anith.com/?p=1000">http://www.anith.com/?p=1000</a></p> <img src="http://blogs.msdn.com/aggbug.aspx?PostID=9370622" width="1" height="1">