Investigation
Unexpected Blocking during the Indexed View Creation
Creating the clustered index on an Indexed View blocked unrelated queries even under RCSI. The cause was Enterprise view matching, fixable with EXPAND VIEWS.
Notes from a TSQL trench
Database stuff,
with a side of memes.
Long-form notes on TSQL performance, Extended Events, Query Store and the tooling around them. Written from the trenches, not the slide deck.
Featured
Latest posts
KDA: Echoes of Deception - Case 5
A deleted podcast episode, 17 million archive log entries, and KQL's time series analysis to find the backup that was never supposed to survive.
KDA: Echoes of Deception - Case 4
Someone hacked Digitown's municipality and stole classified documents. 45 million rows of router traffic, an IP lookup table, and KQL's anomaly detection to find who did it.
My Toolbox - AI
I trusted AI to redesign this blog, be my personal assistant, and organize my life. But I won't let it near a production database. Here's why that's not a contradiction - and what I learned about trust along the way.
Inspecting TSQL Abstract Syntax Trees
What does SQL Server actually see when it parses your code? I built a free web tool that lets you paste TSQL and explore the abstract syntax tree - click a token, see the node, read the fragment.
KDA: Echoes of Deception - Case 3
20 stolen cars with swapped license plates - using KQL to trace VIN changes through traffic data and find the common storage location.
KDA: Echoes of Deception - Case 2
Digitown's citizens are being targeted by phishing calls. Using KQL, I analyze call patterns - duration, hidden caller IDs, and disconnect behavior - to unmask the phisher.
KDA: Echoes of Deception - Case 1
Digitown's utility bills doubled overnight. Using KQL and the EXPLAIN feature, I dig through billing data to find duplicate charges and negative consumption.