What is normal? Finding outliers with R
How do you currently set alerting thresholds? What is normal? And more importantly, what is truly abnormal? We will explore these questions.
2017-06-13
1,814 reads
Nick Burns
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)
9,882 reads
Using R to Identify Key Features Quickly
Typical BI dashboards display data summaries like counts and averages. We use R to extend on these to identify key associations in a dataset.
2017-01-09
2,338 reads
Beyond prediction with R & SQL Server
Predictive / prescriptive analytics is regarded the highest level of advanced analytics. In this post, we emphasise the importance of exploratory analytics to derive meaningful insight.
2016-08-18
2,200 reads
Adding an Article Without a Full Snapshot
Have you got transactional replication in your SQL environment? Do you need to add a new table to your publication, but can't afford the time necessary to create a full new snapshot? Here is a step-by-step guide. Thankfully, adding a single table is easier than I thought.
2015-01-05
22,132 reads
Blogs
Microsoft Build 2026 announcements
By James Serra
Once again there were a number of Microsoft Build announcements related to data and...
T-SQL Tuesday #199: Roundup
A good week ago I hosted the monthly T-SQL Tuesday blog party. I invited...
No Shortcuts for the SQLCMD Batch Terminator: #SQLNewBlogger
By Steve Jones
I was messing around with SQLCMD and I realized something I hadn’t known. I’ve...
Forums
Increment a number in a SQL Query based on a value
I have an issue where I have a Bill of Material list of items...
Follow Your Hunch
Comments posted to this topic are about the item Follow Your Hunch
What Happens When You Ask a Local AI to Query Your Database?
Comments posted to this topic are about the item What Happens When You Ask...
Question of the Day
Detecting Characters
I have a SQL Server 2022 English default installation on a server. I want to detect if there are any upper case characters in rows and I have this code:
SELECT CustomerNameID,
CustomerName
FROM dbo.CustomerName
WHERE CustomerName = LOWER(CustomerName)
Here is the sample data I am testing with:
CustomerNameID CustomerName 1 John Smith 2 Sarah Johnson 3 MICHAEL WILLIAMS 4 JENNIFER BROWN 5 david jones 6 emily davis 7 Robert Miller 8 LISA WILSON 9 christopher moore 10 Amanda TaylorHow many rows are returned? See possible answers