Key Lookups and ColumnStore Indexes
Erik figures out why SQL Server really doesn't like combining these two things in a query plan.
2017-10-17
3,790 reads
Articles
The Power of Python and SQL Server 2017
Python is new to SQL Server 2017. It is intended primarily to allow the use of Python-based machine-learning within SQL Server, but it can be used for far more than this, with any Python libraries or Frameworks. To provide an example of what is possible, Hitendra shows how to use the feature securely to provide intelligent application caching, where SQL Server can automatically indicate when data changes to trigger a cache refresh.
2017-10-16
5,024 reads
A Lightweight, Self-adjusting, Baseline-less Data Monitor
Can data alert us that something is going on, without baselines and thresholds?
2017-10-13 (first published: 2016-02-23)
4,143 reads
Statistics in SQL: Student’s t-test
Many undergraduates have misunderstood the name 'Students' in the t-test to imply that it was designed as a simple test suitable for students. In fact it was William Sealy Gosset, an Englishman publishing under the pseudonym Student, who developed the t-test and t distribution in 1908, as a way of making confident predictions from small sample sizes of normally-distributed variables. As Gosset's employer was Guinness, the brewer, Phil Factor takes a sober view of calculating it in SQL.
2017-10-12
3,767 reads
Network Configuration of SQL Server Always On Availability Groups in Azure
Implementing SQL Server Failover Clustering in Azure virtual machines differs in several aspects from its on-premises implementations. These differences reflect some of the unique characteristics of the storage and network infrastructure services in the Microsoft cloud environment. In this article, Marcin Policht looks at the networking aspects of clustered deployments of SQL Server 2016 in Azure.
2017-10-11
2,735 reads
Automated Database Provisioning for Development and Testing
If your development team needs to work on anonymised copies of the current production database, and if changes are being delivered rapidly as well, that could mean a lot of time and routine DevOps work copying databases. SQL Clone was designed for tasks like this. Grant Fritchey investigates whether you save time, effort and scripting over the more traditional approach, and at what point it makes sense to use it.
2017-10-10
4,465 reads
Indexing for Windowing Functions: WHERE vs. OVER
Erik Darling shows that if you take SQL Server's word when it asks for an index, things can go horribly awry.
2017-10-09
4,023 reads
8 Ways to Export SQL Results To a Text File
This tip will show eight ways to export the results of a query to a text file.
2017-10-06 (first published: 2016-10-26)
501,612 reads
SQL Server Integration Services SSIS 2016 Tutorial
SQL Server Integration Services (SSIS) is the integration and ETL (extract – transform – load) tool in the Microsoft Data Platform stack. SSIS is typically used in data warehousing scenarios, but can also be used in common data integration use cases or just to move data around. SSIS is used behind the scenes in the Maintenance Plans of SQL Server and in the Import/Export wizard.
2017-10-06
4,301 reads
The Basics of Good T-SQL Coding Style – Part 4: Performance
There are several obvious problems with poor SQL Coding habits. It can make code difficult to maintain, or can confuse your team colleagues. It can make refactoring a chore or make testing difficult. The most serious problem is poor performance. You can write SQL that looks beautiful but performs sluggishly, or interferes with other threads. A busy database developer adopts good habits so as to avoid staring at execution plans. Rob Sheldon gives some examples.
2017-10-05
6,056 reads
Blogs
Overcoming Imposter Syndrome: A Plan
By Brian Kelley
My most recent bout with imposter syndrome was with ISACA’s Digital Trust Ecosystem Framework...
Advice I Like: Celebrate Success
By Steve Jones
“On the way to a grand goal, celebrate the smallest victories as if each...
Programmatically Retrieving MLV Lineage and Refresh Times
Materialized lake views (MLVs) in Microsoft Fabric are an effective way to implement medallion...
Forums
Increase Deadlock Detection
Comments posted to this topic are about the item Increase Deadlock Detection
A Tool is Better than a Script
Comments posted to this topic are about the item A Tool is Better than...
Understanding Deadlock Victim Selection in SQL Server
Comments posted to this topic are about the item Understanding Deadlock Victim Selection in...
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