Puzzle

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Databases and Dominoes

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A Dominoes game of Texas 42 inspires Joe Celko to explore unusual uses for check constraints and views. Sometimes, the best way of discovering useful SQL techniques is to tackle the more unusual problems.

2013-09-19

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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)

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