T-SQL Window Function Speed Phreakery: The FIFO Stock Inventory Problem
Sometimes, in the quest for raw SQL performance, you are forced to sacrifice legibility and maintainability of your code, unless you then document your code lavishly. Phil Factor's SQL Speed Phreak challenge produced some memorable code, but can SQL features introduced since then help to produce code that performs as well and is also easy to understand? Kathi Kellenberger investigates.
Data Mining Part 37: The Data Mining query transformation task
This new chapter will show you how to work with the SSIS Data Mining Query Transformation Task
What is Code Coverage For?
Code coverage is a practice that goes hand in hand with automated testing, reporting the percentage of your code that has been exercised during a test run. Ed Elliott and Redgate have partnered to make a code coverage tool available for SQL Server, both free and open source. SQL Cover measures the coverage of your SQL Server stored procedures and functions. It has built-in support for the popular tSQLt unit testing framework, but can also be used alongside any automated testing framework of your choosing. Find out more in this blog post.
Changes to a Writable Partition May Fail Unexpectedly
Paul White shows how an update may fail when a partition has some data on a read-only filegroup, and explains several workarounds.
How to fix SQL Server deadlocks with monitoring
Learn about deadlocks and how you might better troubleshoot the issues involved.
The 2015/2016 Simple-Talk Awards: Winners Announced
The 2015/16 Simple-Talk Awards have concluded, the votes have been counted and recounted, and the winners have now been announced.
Blogs
How to Find Expensive Queries in Amazon Redshift
Slow-running queries can degrade your Redshift cluster’s performance and lead to increased costs. Identifying...
The Notification Trap: How Input Fatigue Is Killing Deep Work in Tech
By gbargsley
If you've been here before, you know this blog is usually about SQL Server,...
Designing a Storage Load Test for SQL Server
I’ve been doing storage load tests for SQL Server for a long time, both...
Forums
How Long is a Long I/O?
Comments posted to this topic are about the item How Long is a Long...
Half of All Engineers
Comments posted to this topic are about the item Half of All Engineers
A question about how to store the address in the database
I have an app that has an address field on the customer and the...
Question of the Day
How Long is a Long I/O?
In SQL Server 2025, a long I/O is recorded in the error log with message 833. How long much an I/O request be outstanding before this message is written to the log?
See possible answers