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
1,828 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)
9,891 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
2,340 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
2,207 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
22,395 reads
Blogs
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Asynchronous Replication of Snapshots from an ActiveCluster Pod to a Third Array
I’ve been rebuilding my three-site SQL Server demo lab, and I ran into something...
SQL Server gMSA: Why So Many DBAs Still Aren't Using It in 2026
By SQLPals
SQL Server gMSA: Why DBAs Still Aren't Using It in 2026 ...
Forums
Never is Not the Policy
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Automating SSAS Multidimensional Security Audits with PowerShell
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Rebuilding All Indexes
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Question of the Day
Rebuilding All Indexes
I have added a few indexes to one of my tables in SQL Server 2025:
ALTER TABLE dbo.CustomerContact
ADD CONSTRAINT PK_CustomerContact
PRIMARY KEY (CustomerID);
-- Create index on CustomerEmail
CREATE INDEX IX_CustomerContact_CustomerEmail
ON dbo.CustomerContact (CustomerEmail);
CREATE INDEX IX_CustomerContact_CustomerEmail
ON dbo.CustomerContact (phone);
I then do this to disable one index:
alter index IX_CustomerContact_CustomerPhone on dbo.CustomerContact disableI see this when I check the index status:
I decide to rebuild all indexes with this command:
ALTER INDEX ALL ON dbo.CustomerContactAfter I do this, what will I see for the index status? See possible answers