SQL Server +0 and -0
This is a very interesting error happened in one of my clients’ databases. Their database has been running for at...
2013-04-30
1,571 reads
John Huang’s Blog
SQL Saturday #198 Feb 16, 2013
SQL Saturday 198, http://www.sqlsaturday.com/198/ ; is coming to Vancouver Feb 16 this year. As of now, 56 sessions are collected from...
2013-01-09
825 reads
NULL Values Impact the Performance of MAX() and MIN()
We know that we need to take special attention about NULL values while writing queries because they may lead us into...
2012-12-26
2,341 reads
Inserted and Deleted are One Table?
Inserted and deleted tables are 2 pseudo tables preseting the before and after images of modified rows. They can only...
2012-10-17
2,446 reads
Update with UPDLOCK
Do you think it’s a good idea to add UPDLOCK hint to the table which will be modified in an...
2012-10-10
1,462 reads
Have You Seen This Error?
location: AppendOnlyVerStoreMgr.cpp:776
Expression: 0
SPID: 64
Process ID: 4912
Description: Cannot locate version record and page is not allocated. Status = 3
Msg 3624, Level 20,...
2012-09-10
1,362 reads
Get Dependent Databases, Tables, Columns…
Quite often people need to write a new T-SQL application to replace an existing one for various reasons. For instance,...
2012-07-06 (first published: 2012-06-29)
4,175 reads
Locking Behavior – Foreign Keys
With Snapshot (read committed snapshot and snapshot isolation level) enabled, when data reading on a table takes place, if any...
2012-06-26
2,760 reads
Bug? Can’t Pass TVP to SQL Function Twice
I run into a bug recently with SQL Server 2012. I believe this exists in SQL Server 2008 as well....
2012-06-20
1,109 reads
DBCC WritePage
DBCC WritePage is a dangerous undocumented DBCC command. It’s useful in your sandbox to change data, crash objects, and do...
2011-11-23
2,867 reads
Blogs
Car Update September 2026
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Software is hard. While I love our Lucid Gravity, I realize that they are...
Microsoft Tools for Making Data AI-Ready
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Making Data AI-Ready, Part 2 (This is the second article in a three-part series...
Local Models Using GPUs with Ollama
By Steve Jones
Can you use your GPUs when running a local model under Ollama? You can,...
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Moving Beyond the Reboot: Finding the Culprit Behind Memory Pressure
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Reserved Words I
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