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To: SI Bob who wrote (14)	12/13/2004 5:42:54 AM
From: mas_	Read Replies (2) of 81

Well subject/threadid would have very few values ;-). It's a big change though and would require changing the packing density of the table as you would want to leave room for records to be inserted during the day and regular reloads say when you have to copy the table rows out and back again to maintain the packing structure and to leave space again as inserting records in a block that's full in a clustered index is slow as it will start shifting record rows into other blocks which may have to be moved on themselves etc etc. If it becomes a problem then you could drop the clustered index and replace with a non-clustered. Might be worth a few tests on a test database though if you have one to see if subjectid queries run quicker.

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