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SQLServerCentral Editorial

Outsourcing Operations

  • Editorial

When I first started working in technology in the 90s, it was a time of outsourcing lots of work overseas. Many large companies followed the wave of manufacturing in the 70s and 80s by many companies, including lots of semi-conductor manufacturers. I watched as a number of jobs moved overseas, though fortunately not mine. In […]

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2023-02-06

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SQLServerCentral Article

Nullable vs Non-Nullable Columns and Adding Not Null Without Downtime in PostgreSQL

  • Article

In this article, we are going to talk about nullable and non-nullable columns specifically related to Postgres databases. While the reasons to use nullable or non-nullable columns may seem obvious at first, there are pitfalls associated with each decision that either affect development velocity, affect application performance, or cause downtime. Let's start with definitions. Nullable […]

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2023-02-03

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Question of the Day

RegEx Functions IV

I have this data in a table in a SQL Server 2025 database:

EmailAddressID EmailAddress
7              dylan0@ADVENTURE-WORKS.COM
8              Diane1@ADVENTURE-WORKS.COM
If I run this query, which row(s) are returned?
SELECT top 10
 *
 FROM person.EmailAddress
 WHERE REGEXP_LIKE(EmailAddress, '^D', 'i')
 AND BusinessEntityID IN (7,8)

See possible answers