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Exclude All Matching Rows

Question I have a table that has a unique ID, name, email, and some other fields. I want to match this table against another table on email, but sometimes emails are shared. The unique ID is not shared among tables, but I will input the ID into the other …

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Reduce MDF file size

Question I am working with a 500 GB SQL Server database. I need to reduce the size of the database data file after removing a large amount (50%) of the data. I tried re indexing, it's good the database has de-fragmented. But the DB size is not reduced.

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