Over a period of time, because of the inserts, updates and deletes, the data and the index pages can get fragmented. Here's a script that can help to defrag the database:
Harnessing SQL Server Metadata- Disabling and Rebuilding Indexes
When doing bulk data changes it may be beneficial to disable indexes prior to starting the operation. Fortunately, SQL's rich metadata makes this very easy to automate in a robust fashion.
2018-05-18 (first published: 2015-10-19)
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