Savepoints and conditional transactions
This is the second in a short series on transactions. In the previous part I discussed nested transactions and showed...
2015-11-20 (first published: 2015-11-17)
3,292 reads
Gail Shaw
- Interests: Computer Graphics, Aikido, Roleplaying
A Mess of Nested Transactions
Transactions are an area that I often find are used badly, or not used at all. Transactions without any error...
2015-11-03
799 reads
Of clustered indexes and ordering
There is a particularly irritating and persistent belief that indexes (usually it’s the clustered that gets picked on) are always...
2015-10-26 (first published: 2015-10-20)
2,820 reads
Index selectivity and index scans
There was a question raised some time back ‘If an index is not selective, will the query operators that use...
2015-10-14 (first published: 2015-10-06)
4,369 reads
Repairing a replication subscriber
It’s a question which has come up a couple of times. If a subscriber of a transactional replication publication becomes...
2015-09-22
1,128 reads
Unusual errors with Distributed Replay
I’ve come to really like Distributed Replay in the last couple of years. I’ve used it to do a scale...
2015-09-08
1,168 reads
How not to do a Masters degree
There are many, many guides to successfully completing a post grad degree, so I am not going to add to...
2015-08-11
592 reads
Premature Optimisation
Learning how to tune a system is a bit of science and a bit of an art. Gail Shaw gives some guidelines on when you might want to tune and how to go about it so as not to unnecessarily undertake the effort.
2014-09-22
5,897 reads
On the importance of a complete break
If you’re the type who habitually checks work email and thinks about work while on holiday, here’s Gail Shaw's challenge for next time: don’t.
2014-09-01
178 reads
But, but, but, my data is clean!
Gail Shaw on the challenges of trying to extract meaningful data from a database containing customers who have the name 'Dummy **DO NOT USE**''.
2014-06-23
329 reads
Blogs
TempDB Internals – What’s New (SQL Server 2016 to 2022)
By Vinay Thakur
I wrote about TempDB Internals and understand that Tempdb plays very important role on...
AI: Blog a Day – Day 2: Generative AI, Multimodal Systems, and Agent AI
By Vinay Thakur
continuing from Day 1 where we covered the history of AI and GPT family,...
Forums
A Quick Restore
Comments posted to this topic are about the item A Quick Restore
Guarding Against SQL Injection at the Database Layer (SQL Server)
Comments posted to this topic are about the item Guarding Against SQL Injection at...
Ola Hallengren Index Optimize Maintenance can we have data compression = page
I have a quick question on Ola Hallengren Index Optimize Maintenance . Do we...
Question of the Day
A Quick Restore
While doing some testing of an application, I wanted to reset my environment after doing some testing with this code:
USE DNRTest BACKUP DATABASE DNRTest TO DISK = 'dnrtest.bak' GO /* Bunch of stuff tested here */RESTORE DATABASE DNRTest FROM DISK = 'dnrtest.bak' WITH REPLACEWhat happens if this runs, assuming the "bunch of stuff" isn't anything affecting the instance. See possible answers