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
7,878 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
7,878 reads
2023-11-29
452 reads
2023-11-22
435 reads
2021-05-31
616 reads
2019-08-05
Using OVER clause with ROW_NUMBER() function to get top ranked employee detail as per each department.
2016-10-25 (first published: 2016-10-03)
763 reads
Having a solid knowledge of the window functions if vital to high performance T-SQL Code. The key to these functions is how the OVER clause is used. This article will dive into how to use the OVER clause.
2019-09-19 (first published: 2015-10-14)
182,238 reads
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I have this table in SQL Server 2022:
CREATE TABLE CustomerLarge (CustomerID INT NOT NULL IDENTITY(1, 1) CONSTRAINT CustomerLargePK PRIMARY KEY CLUSTERED , CustomerName VARCHAR(20) , CustomerContactFirstName VARCHAR(40) , CustomerContactLastName VARCHAR(40) , Address VARCHAR(20) , Address2 VARCHAR(20) , City VARCHAR(20) , CountryCode CHAR(3) , Postal VARCHAR(20) ) GOIf I check the columns_updated() function return in a trigger, what is the data returned? See possible answers