sql server table when storing large data and handle large data tables, table spaces often encounter more and more, sometimes beyond should occupy a lot of space, at this time if the table is compressed data storage, then re-execute bit compression script, size of the data will be re-initialized, and then use the database systolic contractile function database about it.
Of course, that is easier to re-build a table, and then migrate data to the new table, drop the old table, a more thorough way.