Locking, Blocking and Deadlocking
Introduction into Locking, Blocking and Deadlocks in SQL Server, and why SQL Server uses these actions.
Introduction into Locking, Blocking and Deadlocks in SQL Server, and why SQL Server uses these actions.
Like Sherlock Holmes, a DBA needs the sound deductive reasoning to pinpoint the root cause of a crime, in amongst a thousand interesting but irrelevant details.
Today we have a guest editorial from Chris Shaw. After the recent PASS Summit, Chris talks about the value of getting inspired by people he listens to talking about SQL Server.
Join Red Gate for a free seminar on December 6 (the day before SQL Saturday Washington DC). Steve Jones and Grant Fritchey, SQL Server MVPs, will present best practices for SQL Server version control, continuous integration and deployment, in addition to showing Red Gate tools in action.
Are you a SQL Server DBA who is now being asked to migrate databases to Windows Azure SQL Database (WASD)? Are you a developer who is writing code for a cloud service that shall use SQL Database as the back-end? This blog post is based on issues encountered while supporting customers that were once in your shoes and the lessons learned in the process.
Today we have a guest editorial from Andy Warren. Andy asks today if you've thought about a dream job, and if so, what would it be?
New author Nilav Ghosh brings us a performance tuning article to help your queries run better. This article examines how indexes can help reduce blocking.
This article is a whistle-stop tour of my exploration of latches; their different types, their purposes, why they are required and where they fit into the SQL database engine, in the hope it will be interesting and useful to you.
Today Steve Jones talks about the time required to increase your skills and debates about what time you need to invest each year to gain knowledge.
Some people set their default database to the database they use most often. This can cause issues when a restore fails.
If you work with data pipelines, SQL, notebooks, or machine learning models, a Mac...
By ChrisJenkins
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In SQL Server 2025, I have a table (dbo.UserPermission) that contains this data:
UserID UserPermissions 15 23 37What is returned when I run this code:
select bit_count(UserPermissions) as PermissionCount from dbo.UserPermission where UserID = 3;See possible answers