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Technical Article

Return WeekNo (ISO 8601 standard)

In MS SQL, January 1 of any year defines the starting number for the week. The DATEPART(wk, 'Jan 1, xxxx') always return 1. However, a lot of reports Week No is actually based on ISO 8601 standard, that is January 1 of any year can be Week 53/52 or Week 1. (http://www.merlyn.demon.co.uk/weekinfo.htm#IDC)The Rule is as […]

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2005-06-14 (first published: )

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Technical Article

IsDateAHoliday UDF

This is a User Defined Function that returns a 1 if date is a holiday else, it returns a 0.The holidays are:New years Day, MLK Day, Presidents Day, Memorial Day, Independance Day, Labor Day, Columbus Day, Veterans Day, Christmas Eve and Christmas Day

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2005-06-13 (first published: )

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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