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
5,214 reads
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
5,214 reads
The most common method on the internet for combining DATE and TIME columns in SQL Server is incorrect. This article demonstrates why that and other methods are incorrect and two lesser known high performance methods that produce correct results even for the "edge cases".
2023-08-07
14,329 reads
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
24,907 reads
A function to add or subtract working days taking into account weekends and using a table of non-working days.
2019-07-10 (first published: 2019-06-26)
4,979 reads
2018-02-23 (first published: 2018-02-19)
143 reads
2017-12-29
1,081 reads
This script provides the day of the month for the standard bank holidays for any given year. This is especially useful for computing the workday after a holiday.
2017-05-24 (first published: 2017-05-10)
491 reads
By Steve Jones
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Certain internal SQL Server actions cause internal checkpoints. Which of these actions does not cause an internal checkpoint?
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