Date and Time Calculations Made Easy with EOMONTH, DATEDIFF, and DATEADD
Learn how to work with dates and calculate particular dates or elapsed time periods with some of the functions available in SQL Server.
2025-05-09
4,040 reads
DateDiff
SQL Window Functions Series: LAG() and LEAD()
Dive deep into the powerful SQL window functions, LAG() and LEAD(). Explore their intricacies, discover real-world examples, and avoid common pitfalls.
2023-12-11
11,862 reads
How to Find the Start and End Dates for the Current Week (and more)
Learn to calculate Start / First of Week, End of Week, Start of Next Week, Year, Quarter, and Month of the week, Week Numbers and more in T-SQL (Jeff Moden)
2022-07-13
35,492 reads
2021-02-04
763 reads
2020-02-27
23,755 reads
Work around for calculating age using the SQL Server DateDiff function
Have you ever wanted to compute age, but the results from the DATEDIFF function seemed to be wrong some of the time? This tip covers why the DATEDIFF function does not always reliably compute age.
2012-05-23
4,752 reads
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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 [email protected] 8 [email protected]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