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
8,947 reads
LAG function
The SQL Server LAG Function
The LAG function can really improve performance over the old double JOIN.
2019-01-21 (first published: 2019-01-14)
3,440 reads
Blogs
Streamlining Azure VM Moves Into Availability Zones
By John
One of the more frustrating aspects about creating an Azure virtual machine is that...
Monday Monitor Tips: Native Replication Monitoring
By Steve Jones
Redgate Monitor has been able to monitor replication for a long term, but it...
Advice I Like: Art
By Steve Jones
Superheroes and saints never make art. Only imperfect beings can make art because art...
Forums
Think LSNs Are Unique? Think Again - Preventing Data Loss in CDC ETL
Comments posted to this topic are about the item Think LSNs Are Unique? Think...
The AI Bubble and the Weak Foundation Beam
Comments posted to this topic are about the item The AI Bubble and the...
Question of the Day
A Big PK
In SQL Server 2025, how many columns can be included in a Primary Key constraint?
See possible answers