Five Mistakes Performance Tuners Make
Erik Darling explains why your queries aren't scaling in production.
Azure DWH part 15: PolyBase and Azure Data Lake
In this article, we will learn how to query a csv file stored in the Data Lake using PolyBase.
Introduction to Azure Cosmos DB
Azure Cosmos DB is the latest data service offering from Microsoft. Azure Cosmos DB is a super set of DocumentDB and provides a new set of capabilities. These capabilities make Azure Cosmos DB stand out from other members in the NoSQL database family.
SQL Server in Space - HASSP
A successful launch, and recovery, of SQL Server running below a balloon.
Time Traveling with Temporal Tables on SQL Server 2016
One of the new features of SQL Server 2016 is the ability to time travel in your databases and visit a specific table at a specific point of time in history. You can also use this feature to audit changes or “undo” whole data warehouse updates.
Protecting production data in non-production environments
In this article, Grant Fritchey looks at the need to ‘shift left’ the database and associated database testing, while keeping sensitive data secure when it is outside the production...
Statistics in SQL: The Mann–Whitney U test
Phil Factor shows how to use the Mann-Whitney U test in SQL to to find out whether two samples come from the same distribution.
Improving Log Shipping
Today Steve Jones looks at possible ways to improve log shipping and asks for your input as well.
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...
T-SQL Trigonometric Functions in SQL Server
Comments posted to this topic are about the item T-SQL Trigonometric Functions in SQL...
Half of All Engineers
Comments posted to this topic are about the item Half of All Engineers
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