Email addresses are very prevalent in IT systems and often used as a natural primary key. The repetitive storage of email addresses in multiple tables is a bad design choice. Following is a design pattern to store email addresses in a single table and to retrieve them efficiently.
2017-09-15 (first published: 2015-09-24)
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A brief introduction to the sparse option and script to help decide when to use it
2016-08-25 (first published: 2015-04-10)
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2014-11-04 (first published: 2014-10-06)
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Data Compression and Snapshot Isolation don't play well together, you may not see a performance benefit
2014-10-02
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In SQL Server 2025, how many columns can be included in a Primary Key constraint?
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