An Alternative to SELECT COUNT(*) for Better Performance
Sometimes rapid code development doesn't always produce the most efficient code. Take the age old line of code SELECT COUNT(*)...
2013-05-07
5,294 reads
Patrick
- Twitter: @patrickkeisler
- Website: https://www.patrickkeisler.com
- LinkedIn: https://www.linkedin.com/in/patrickkeisler/
Merging SQL Server and Softball Just for Fun
With opening day of Major League Baseball season finally here, I thought I’d take the time to cover two of...
2013-04-02
1,289 reads
Use Powershell to Pick Up what Database Mirroring Leaves Behind
Database mirroring has been around since SQL Server 2005, and it's turned out to be an excellent step up from...
2013-03-26
2,453 reads
T-SQL Tuesday #40 - Proportional Fill within a Filegroup
T-SQL Tuesday #40 is underway, and this month's host is Jennifer McCown (blog|twitter). The topic is about File and Filegroup...
2013-03-15 (first published: 2013-03-12)
2,896 reads
Dealing with a Fragmented Heap
Just for the record, this happens to be one of my favorite interview questions to ask candidates.
At some point in...
2013-03-05
2,339 reads
The Performance Impact to Prefix Stored Procedures with sp_
Last week I ran across a blog post by Axel Achten (B|T) that outlined a few reasons why you should...
2013-02-19
1,467 reads
What is DBCC SHOW_STATISTICS Telling Me About My Data?
Per Books Online, DBCC SHOW_STATISTICS displays current query optimization statistics for a table or indexed view. Basically it shows you...
2013-02-14 (first published: 2013-02-05)
5,482 reads
T-SQL Tuesday - Use Powershell to Restore a Database on a Different Server
T-SQL Tuesday - This month's party is hosted by Wayne Sheffield (blog|twitter), and the topic is about Powershell and how to use...
2013-02-12
8,172 reads
How to Remove (Undo) Table Partitioning
I have seen plenty of articles and blog posts out there for how to setup and implement table partitioning, but...
2013-02-04 (first published: 2013-01-29)
8,789 reads
sp_PerformanceCounters - Get a Health Check of SQL Server's Performance
During your career as a DBA, you'll run across articles by SQL experts or other DBAs that just give you...
2013-01-22
1,360 reads
Blogs
Excellent article on securing msdb
By Brian Kelley
Fabiano Amorim has written an excellent article at Simple Talk on securing msdb. Here's...
T-SQL Tuesday #201: Temp Tables
By Steve Jones
This month we have a new host, which I am grateful for. So many...
When Do You Reach For A #temp Table?
I needed to do some research because there is more to #temp tables than...
Forums
OUTER APPLY Fundamentals: Part 2
Comments posted to this topic are about the item OUTER APPLY Fundamentals: Part 2
Building Great Software
Comments posted to this topic are about the item Building Great Software
The Range of Customers
Comments posted to this topic are about the item The Range of Customers
Question of the Day
The Range of Customers
I have this data in the OrderHeader table in a SQL Server 2025 database (ordered by CustomerID ASC):
orderid orderdate customerid complete 3 2025-05-10 00:00:00.0002 1 21 2024-01-10 00:00:00.0003 1 15 2023-10-28 00:00:00.0004 1 13 2025-03-08 00:00:00.0006 1 11 2024-04-02 00:00:00.0007 1If I run this query, how many rows are returned?
SELECT * from dbo.OrderHeader where customerid between 3 and '6'See possible answers