Articles

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.

2016-10-17

3,150 reads

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.

2016-10-14

3,646 reads

SQLServerCentral Article

Error Logging Gone Wild

Many of have applications that log errors to a table. Ever thought about what happens when an application starts to throw a lot of errors? This article looks at the problem and some of the responses you might consider having ready in case it happens to you!

(6)

You rated this post out of 5. Change rating

2016-10-11

1,807 reads

External Article

Going Interactive with C#

For some time now, C# programmers have gazed enviously at the interactive capabilities of F#, Python and PowerShell. For rapid prototyping work and interactive debugging, dynamic languages are hard to beat. C# Interactive slipped into view quietly, without razzmatazz, in Visual Studio 2015 Update 1. It's good, it's worth knowing about; and Tom Fischer is intent on convincing you of that.

2016-10-11

5,674 reads

Blogs

How to Find Expensive Queries in Amazon Redshift

By

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

If you've been here before, you know this blog is usually about SQL Server,...

Designing a Storage Load Test for SQL Server

By

I’ve been doing storage load tests for SQL Server for a long time, both...

Read the latest Blogs

Forums

How Long is a Long I/O?

By Steve Jones - SSC Editor

Comments posted to this topic are about the item How Long is a Long...

T-SQL Trigonometric Functions in SQL Server

By Imran2629

Comments posted to this topic are about the item T-SQL Trigonometric Functions in SQL...

Half of All Engineers

By Steve Jones - SSC Editor

Comments posted to this topic are about the item Half of All Engineers

Visit the forum

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