Performance Myths : Truncate Can't Be Rolled Back
Derik Hammer sets out to disprove another pervasive performance myth : TRUNCATE is faster than DELETE because it isn't logged and can't be rolled back.
2017-06-01
4,663 reads
Performance
Performance Myths: Table variables are always in-memory
Guest author Derik Hammer dismisses the common myth that table variables perform better than temp tables because they are always in memory.
2017-05-11
5,730 reads
Harmful, Pervasive SQL Server Performance Myths
Aaron Bertrand begins a new series around disproving prevalent myths regarding SQL Server performance.
2017-04-13
4,686 reads
Finding the Worst Performing TSQL Statement
Greg Larsen explains how you can use Dynamic Management Objects and stored procedures to return your worst performing T-SQL statements.
2017-03-06
5,202 reads
Performance Surprises and Assumptions : GROUP BY vs. DISTINCT
Aaron Bertrand acknowledges that DISTINCT and GROUP BY are usually interchangeable, but shows there are cases where one performs better than the other.
2017-02-23
8,502 reads
How Incorrect SQL Server Table Statistic Estimates Can Cause Slow Query Execution
Ben Snaidero explains that if you are updating your SQL Server table statistics nightly, but still seeing occasional poor performance with some of the queries being executed against my database, statistics could be the issue.
2017-02-09
4,089 reads
Disconnecting SQL Server connections after query execution
One way to improve SQL Server performance is to use as few resources as possible. In this post Rahul Mehta demonstrates how you can do this by disconnecting queries post-execution with a simple change in SSMS.
2016-12-21
5,620 reads
5 Advantages of Load Balancing For IT Companies
As an IT company, it is crucial that you maintain uptime and monitor the performance of various processes. By making database load balancing a key element, you can ensure that your processes and websites run smoothly. Tony Branson explains.
2016-11-24
5,719 reads
Sparse Columns in SQL Server : Impact on Time & Space
Erin Stellato (@erinstellato) looks into sparse columns in SQL Server – the changes to space requirements and the impact on the write portion of your workload.
2016-03-15
3,581 reads
Combining R and SQL Server to diagnose performance bottlenecks
Using clustering algorithms to analyse index usage data from SQL Server’s DMVs & simplify complex performance investigations.
2017-05-29 (first published: 2015-12-07)
9,860 reads
Blogs
How to: Regain SysAdmin Access to a SQL Server Instance Without the SA Password
By gbargsley
Hello, reader! Today, I’m going to walk you through a scenario that many DBAs...
Secure Your SQL Estate: Best Practices for Azure SQL Security
By Chris Yates
The Castle and the Keys Imagine your Azure SQL environment as a sprawling digital...
The Book of Redgate: Meetings
By Steve Jones
I think we might have forgotten this a bit, but on one of the...
Forums
Visual Studio SSIS Package Showing Up Blank
Hi all, this is my first time posting on this forum, thank you all...
MySQL 5.6 not writing any logs
We are using MySQL version 5.6 in our Windows Server 2012 R2 environment. We...
How to resolve issue of custom Audit log table containing incorrect data?
We have created a parent table, child table & Audit log table in SQL...
Question of the Day
Change Tracking Default Retention
I run this command on my SQL Server 2022 database:
ALTER DATABASE AdventureWorks2017 SET CHANGE_TRACKING = ON;What is the default data retention period? See possible answers