External Article

In-Memory OLTP: Row Visibility in SQL Server’s MVCC

SQL Server's In-memory OLTP is fast, due to its multi-valued concurrency control (MVCC). MVCC avoids the need for locks by arranging for each user connected to the database to see a snapshot of the rows of the tables at a point in time, No changes made by the user will be seen by other users of the database until the changes have been completed and committed. It is conceptually simple but does the user always see the correct version of a row under all circumstances? Shel Burkow explains.

External Article

DELETE Operation in SQL Server HEAPs

You should stick to using tables in SQL Server, rather than heaps that have no clustered index, unless you have well-considered reasons to choose heaps. However, there are uses for heaps in special circumstances, and it is useful to know what these uses are, and when you should avoid heaps. Uwe Ricken explains, and demonstrates why you'd be unwise to use heaps rather than tables when the data is liable to change.

Blogs

Programmatically Retrieving MLV Lineage and Refresh Times

By

Materialized lake views (MLVs) in Microsoft Fabric are an effective way to implement medallion...

SWAG Saves the Day

By

PASS Summit East is in one week. I was on the road last week...

Upgrading SQL Server Containers on the Laptop

By

I don’t have SQL Server installed on my laptop. In an effort to keep...

Read the latest Blogs

Forums

Increase Deadlock Detection

By Steve Jones - SSC Editor

Comments posted to this topic are about the item Increase Deadlock Detection

A Tool is Better than a Script

By Steve Jones - SSC Editor

Comments posted to this topic are about the item A Tool is Better than...

Understanding Deadlock Victim Selection in SQL Server

By john.martin

Comments posted to this topic are about the item Understanding Deadlock Victim Selection in...

Visit the forum

Question of the Day

Increase Deadlock Detection

How can I alter the deadlock detection interval to 2 seconds instead of 5 seconds on my SQL Server 2025 instance?

See possible answers