SQL Server Is Slow – Part 2 of 4(?)
The 10-Minute Outside-In Triage Don’t Blame SQL First It’s 9:05 AM and your helpdesk lights up: “The SQL Server is down. Nothing works.” By 9:07, everyone is staring at...
2025-09-24
27 reads
Kevin3NF
- Interests: Cycling, family, sci-fi, DBA stuff
SQL Server Failover Cluster Instances
Old Reliable Still Matters If you’ve been around SQL Server for a while, you’ve heard of Failover Cluster Instances (FCIs). They’ve been part of SQL’s high availability toolbox since...
2025-09-19 (first published: 2025-09-03)
218 reads
SQL Server Log Shipping: The Tried and True of DR
It’s not glamorous, but it works In a world where shiny new HA/DR features get all the press, there’s one SQL Server technology that just keeps doing its job....
2025-09-15 (first published: 2025-08-27)
230 reads
SQL Server Availability Groups
Flexibility and Scale at the Database Level When SQL Server 2012 introduced Availability Groups (AGs), they changed the HA/DR game. Unlike Failover Cluster Instances (FCIs), which protect the whole...
2025-09-10
28 reads
SQL Server I/O Bottlenecks: It’s Not Always the Disk’s Fault
“SQL Server is slow.” We’ve all heard it. But that doesn’t always mean SQL Server is the problem. And “slow” means nothing without context and ability to verify. More...
2025-08-27 (first published: 2025-08-06)
513 reads
SQL Server Backups: The Basics
If you’re responsible for a SQL Server instance, you need working, consistent backups. Not just a .bak file here and there, but a plan that runs automatically and covers...
2025-08-20
38 reads
SQL Server Maintenance Plans
If you’re a DBA, sysadmin, IT manager, or Accidental DBA, you’ve probably seen SQL Server’s built-in Maintenance Plans. They live right there in SSMS under the “Management” node, quietly...
2025-08-15 (first published: 2025-07-30)
447 reads
DBCC CHECKDB: Just Because It’s Quiet Doesn’t Mean It’s Safe
Corruption isn’t a “maybe someday” problem – what you need to do now. Stop. Don’t panic. You just ran DBCC CHECKDB for the first time in a while (or...
2025-08-13
27 reads
SQL Server Post-Install Configurations
The SQL Server installer has gotten better: tempdb configuration, MAXDOP, and even max memory can now be configured during setup. But don’t be fooled: there’s still a post-install checklist...
2025-07-23
74 reads
SQL Server Database Compatibility Levels
Why You Shouldn’t Overlook This Quiet but Critical SQL Server Setting If you’ve ever upgraded a SQL Server instance and something just broke in your application, chances are...
2025-07-16
469 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