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
6,452 reads
SQL Performance
Hands-On with Columnstore Indexes: Part 3 Maintenance and Additional Options
In the final article of this series, Edward Pollack demonstrates the maintenance of columnstore indexes. He also takes a look at nonclustered columnstore and memory-optimized columnstore indexes.
2020-08-06
Tempdb – Here’s a Problem You Didn’t Know You Have
Because of its many roles, tempdb is the source of performance issues in SQL Server, and there are recommended configuration changes to mitigate this. In this article, Fabiano Amorim demonstrates another issue with tempdb performance that you probably didn’t know about.
2020-07-02
Improve Row Count Estimates for Table Variables without Changing Code
Table variables can cause performance issues with joins when they contain a large number of rows. In SQL Server 2019, Microsoft has improved how the optimizer works with table variables which can improve performance without making changes to your code. In this article, Greg Larsen explains how this feature works and if it really does make a difference.
2020-06-22
Get Your Scalar UDFs to Run Faster Without Code Changes
Microsoft has added a group of features called Intelligent Query Processing to SQL Server 2017 and 2019. In this article, Greg Larsen explains one of the features, Scalar UDF Inlining.
2020-03-02
High-Performance Transact-SQL with Window Functions
Window functions are more intuitive and simpler in many cases than alternative SQL methods.
2013-12-02
8,744 reads
Blogs
T-SQL Tuesday #181: A Technology Present
By Steve Jones
It’s the last T-SQL Tuesday of the year, and it’s amazing to think we’ve...
Trace Flag 3625 Follow Up
By Patrick
Several months ago, I discussed my customer’s intention to enable trace flag 3625. Since...
Top 5 Advanced SQL Courses for 2025 (Must-Know)
Want to seriously boost your data skills? Mastering advanced SQL is the key, whether...
Forums
The Hash Join III
Comments posted to this topic are about the item The Hash Join III
Continuous Learning
Comments posted to this topic are about the item Continuous Learning
Virtualizing GCP data by using Fabric Shortcuts: Data Engineering with Fabric
Comments posted to this topic are about the item Virtualizing GCP data by using...
Question of the Day
The Hash Join III
In a hash join, if all the build input does not fit in memory, what type of hash join is this?
See possible answers