Without question, one of the most common tasks performed by Database Administrators (DBAs) is identifying and weeding out duplicate values in tables. Despite the inordinate number of queries written by other DBAs to locate duplicate values in their database tables, the real challenge is in locating a useable SQL statement to go by. Rob Gravelle presents a few solutions that will save you some time down the road.
2016-12-15
6,301 reads
Execution plans explain all you need to know about query performance, and how to fine-tune. Sure, you can see them in SSMS, but what if you need to drill into to the important details? What about using DMVs, Extended Events or SET statements to get at the execution plans? To get the best use of execution plans you need to be able to get right information from the right plan at the right time. Robert Sheldon explains how.
2016-12-14
3,977 reads
Microsoft has made a bold change with SQL Server 2016 Service Pack 1 : Many Enterprise features are now available in lower editions. Read on for details.
2016-12-13
10,390 reads
There are so many ways of keeping your technical skills and knowledge up-to-date. There are books, articles, conferences, video courses and so on, but nothing beats discussion and debate with professional people in other organisations facing a similar range of technical challenges, some of which you share, and others you maybe haven't yet. PASS is unique in providing just this vital ingredient for database professionals using the Microsoft Data Stack.
2016-12-12
6,151 reads
HTML Input forms are, by their nature, tiresome for the user of any website. However, with some attention to detail and a dash of JavaScript, it is possible to reduce the drudgery of form-filling to the minimum and minimise mistakes. Dino explains four ways of making things better for the user of your website.
2016-12-09
3,196 reads
When something's wrong with your database you need to be able to identify the primary pain points within SQL Server and get to the root cause of the problem fast. Grant Fritchey explains how you can use execution plans inside SQL Monitor to help quickly and simply identify the problem.
2016-12-09
3,837 reads
After a recent conversation on Twitter, Aaron Bertrand shows where excessive comments in your stored procedures might have an impact on performance.
2016-12-08
4,729 reads
Cloning a SQL Server login with permissions that match another login is a common task. In this post, Jeffrey Yao shows how this an be done using PowerShell.
2016-12-07
4,030 reads
SQLBits 2017 has been announced. The conference will take place on April 5-8, 2017 in Telford, UK.
2016-12-07
3,101 reads
Learn how to leverage Azure Active Directory when connecting to Azure SQL Database from applications or services in a non-interactive manner, by relying on token-based authentication.
2016-12-06
4,560 reads
By ReviewMyDB
Index maintenance has always meant nightly jobs and a window you have to defend....
I’m sure you’ve all heard the tale of Goldilocks and the Three Bears, but...
By Steve Jones
One of the things I’ve been requesting for a number of years is cost...
Comments posted to this topic are about the item SQL Art, Part 4: Happy...
Comments posted to this topic are about the item How We Handled a Vendor...
Comments posted to this topic are about the item Cognitive Coverage
I have this data in the dbo.Commission table in a SQL Server 2022 database.
salesperson commission Brian 12 Brian 16 Andy 7 Andy 14 Andy 21 Steve 20 Steve NULLAll the data is a varchar, and I decide to run this query to get the totals for each salesperson.
SELECT SalesPerson
, AVG(TRY_PARSE(Commission AS int)) AS TotalCommission
FROM commission
GROUP BY SalesPerson
GO
What average commission is calculated for Steve? See possible answers