Changing newid() to newsequentialid() on an existing table

Posted by cbp on Stack Overflow See other posts from Stack Overflow or by cbp
Published on 2009-05-27T01:22:07Z Indexed on 2010/06/06 20:12 UTC
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sql

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clustered-index

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newsequentialid

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newid

Hi, At the moment we have a number of tables that are using newid() on the primary key. This is causing large amounts of fragmentation. So I would like to change the column to use newsequentialid() instead.

I imagine that the existing data will remain quite fragmented but the new data will be less fragmented. This would imply that I should perhaps wait some time before changing the PK index from non-clustered to clustered.

My question is, does anyone have experience doing this? Is there anything I have overlooked that I should be careful of?

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