2025-06-02
511 reads
Date Calculations
2024-06-10
485 reads
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
9,087 reads
Combine DATE and TIME to DATETIME2 in SQL Server
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
23,621 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
33,675 reads
2020-02-27
23,394 reads
Politics makes for bad databases - plus calculate British holidays
In this piece, learn about changes in UK holidays and get a script to calculate them.
2019-07-15
3,072 reads
2019-07-04
904 reads
2019-04-18
1,472 reads
Function for Getting Interval Dates by days,months,years.
Function for Getting Interval Dates by days,months,years for particular week number, for particular month, for particular date between 1 to 31. etc...
All in One Date Interval Related Function.
2016-06-27 (first published: 2015-11-27)
1,938 reads
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Question of the Day
Encoding URLs
I have this data in a table:
CREATE TABLE Response ( ResponseID INT NOT NULL CONSTRAINT ResponsePK PRIMARY KEY , ResponseVal VARBINARY(5000) ) GOIf I want to get a value from this table that I can add to a URL in a browser, which of these code items produces a result I can use? See possible answers