Changing jobs -- Pros and Cons
I read Andy's post Changing Jobs - Should You? today with great interest. I think it is good topic in the...
2008-08-08
1,321 reads
Jeffrey Yao
Cold backup and remote control of sql server services
I recently got a request to do a "cold" backup of a small yet complex db environment, I say "small" because...
2008-08-02
731 reads
Replication Error "memory mapped file read failed"
I was fighting an error that was very rare to appear. I originally put a post on a MS forum
http://www.microsoft.com/communities/newsgroups/en-us/default.aspx?dg=microsoft.public.sqlserver.replication&tid=57229124-0a5a-4ec3-9055-a06b7869b872&cat=&lang=&cr=&sloc=&p=1
The...
2008-07-02
4,460 reads
Replication Error "field size too large"
Yesterday, I was fighting with an error I have never seen in the replication and not much info can be obtained via...
2008-06-03
16,294 reads
From DBA to DBAA
Most of us DBAs have worked on our career to get where we are. A DBA is usually a second or third step in IT and we we've looked to advance our understanding of technology. Jeffrey Yao now brings us a new level of database work to which we may aspire.
2008-05-09 (first published: 2007-07-12)
15,732 reads
Difference between truncate and delete
This is an old topic and well documented, just google it and I believe you will get a lot,
However,...
2008-04-22
2,251 reads
Documentation Value Formula (Part II)
In my last post, I talked about what prompted me to give a deep thought to documentation work. Documentation, to me,...
2008-03-17
1,027 reads
Documentation Value Formula (Part I)
As a DBA, documentation work is unavoidable, we need to do documentation about things we have done, for example, what...
2008-03-01
1,077 reads
New DBA type: Test DBA
In DBA world, usually two types of DBA are defined depending on what a DBA is focusing on, i.e. development DBA...
2008-02-29
1,903 reads
SQL Server 2005 Replication bug?
Last week, in our production, we noticed some records are missing in the subscriber side while existing on the publisher...
2008-01-15
937 reads
Blogs
How to Clear the SSMS Cache (SSMS 21 and Later)
By SQLPals
How to Clear the SSMS Cache (SSMS 21 and Later) Updated...
The flight recorder: Replaying what an AI agent did on my SQL Server
By Arun Sirpal
“What exactly did it do on my server?” is the first question a DBA...
Announcements from the Microsoft Fabric Community Conference — Barcelona 2026
By James Serra
Microsoft shared a broad set of Fabric, Power BI, and SQL updates at FabCon...
Forums
Let's Talk Certifications
Comments posted to this topic are about the item Let's Talk Certifications
The Hidden Security Risks of Role Combination in SSAS Tabular
Comments posted to this topic are about the item The Hidden Security Risks of...
The Empty Aggregate
Comments posted to this topic are about the item The Empty Aggregate
Question of the Day
The Empty Aggregate
I have this table in a SQL Server 2025 database:
CREATE TABLE [dbo].[CustomerOrder] ( [OrderID] [int] NULL, [CustomerID] [int] NULL, [total] [money] NULL ) ON [PRIMARY] GOWhat is returned from this code? (answers are for the sum and then the count)
SELECT SUM(total) AS sum,
COUNT(total) AS count
FROM dbo.CustomerOrder;
See possible answers