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
1,563 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
822 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
2,330 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
2,436 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
1,450 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
1,351 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)
4,167 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
2,753 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
1,101 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
2,835 reads
Blogs
5 Starter Projects for Your AI and Data Engineering Portfolio
Reading tutorials is fine. Shipping something is better. If you are trying to break...
The Book of Redgate: Taking Breaks
By Steve Jones
We work hard at Redgate, though with a good work-life balance. One interesting observation...
Database AI Agents: The Read-Only Rule
By Arun Sirpal
Fourth in a series on Ai and databases. What Read-Only Advisory Actually Means A...
Forums
Liability for AI Errors
Comments posted to this topic are about the item Liability for AI Errors
Running a Parameter-Sensitive Stored Procedure on a Secondary Replica
Hello , I would like to run a stored procedure on a secondary replica...
Pro SQL Server Internals
Comments posted to this topic are about the item Pro SQL Server Internals
Question of the Day
Running SQLCMD II
I run this command to start SQLCMD:
sqlcmd -S localhost -E -c "proceed"At the prompt, I type this (the 1> and 2> are prompts):
1> select @@version 2> goWhat happens? See possible answers