>>I have been learning SQL 2008. After creating a few related tables, I added a few additional column to one of the tables. When I attempt to save the table structure I get an error telling me that the table can not be dropped and re-created.
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>>1. Why when added a new column does SQL need to drop the original and re-create it?
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>>2. If the constraint are the problem, why doesn't SQL drop the constraints and recreate them?
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>Greg,
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>Check out Message #1469338 and also read Sergey's warning in the same thread.

Thanks, found that solution, but I not clear if the table is re-created whether the data is lost.