Debugging query timeouts by sampling blocking – part 2
In part 1 I explained how I was hunting for the root cause for some query timeouts that happened every...
2012-03-20 (first published: 2012-03-15)
2,919 reads
#Meme15: On Facebook
This will be my first Meme15 (here’s Jason Strate’s original Meme15 post), and today we’re talking Facebook. The question is:
How...
2012-03-15
820 reads
ColoradoSQL for March 2012
All ColoradoSQL user group meetings start at 5:30 p.m. and provide food and refreshments. There is no cost to attend...
2012-03-15
652 reads
Tempdb quick notes from Professional SQL Server 2008 internals and troubleshooting
I spent sometime to understand more about tempdb today. posting some key points for our quick reference.
some key books/links on...
2012-03-15
2,290 reads
Agent Jobs Using SSIS
This is a short script to help the DBA with documentation purposes. This would come in handy especially in those cases where you are consulting or you have taken...
2012-03-15
10 reads
Agent Jobs Using SSIS
This is a short script to help the DBA with documentation purposes. This would come in handy especially in those...
2012-03-15
857 reads
Cached blocking history with sys.dm_db_index_operational_stats
Transactions generate IO, latching and locking on tables and indexes , while attempting to access data. The sys.dm_db_index_operational_stats DMV returns aggregated data...
2012-03-15
1,365 reads
SQL Server 2012 Performance Test: Truncate a Date/Time to Different Parts
SQL Server 2012 introduces several new date/time functions that allow you to build a date/time from the individual parts of...
2012-03-15
2,978 reads
Importing images to SQL server database using T-Sql
Yesterday evening one of the developer asked me that he need a help in importing images into a table. It...
2012-03-15
11,516 reads
Webcast: What Are You Waiting For?
What was the number one question from today’s webcast on wait statistics? Where can the slides and sample code be...
2012-03-15
745 reads
Blogs
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...
Au Revoir for now
By Steve Jones
No, I’m not quitting or retiring. Just going on vacation, but I leave tonight...
Forums
Let's Talk Certifications
Comments posted to this topic are about the item Let's Talk Certifications, which is...
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