T-SQL Tuesday #135 – Awesome Tools
It’s blog party week for T-SQL Tuesday, and I think this is a good choice for a topic. The host this month is Mikey Bronowski, and his invitation is...
2021-02-09
174 reads
T-SQL Tuesday #135 – The Tools That Make My Job Awesome!
Blog posts have been few and far between from SQL Undercover lately but what better to try and get us back in the swing again than with T-SQL Tuesday....
2021-02-09
149 reads
Statistics and the Ascending Key Problem
I’ve mentioned previously how not having up to date statistics can cause problems in query performance. This post looks at something called the Ascending Key Problem which can badly...
2021-02-09
190 reads
Unable to Connect to Target Server? But, I'm Already Connected!
I am working on an Azure SQL Database migration from an on-premises VM, and at the client's request I am working through the BACPAC Import/Export process rather than using...
2021-02-16 (first published: 2021-02-08)
354 reads
Release Your Inner Synapse
I don’t know about you, but as Microsoft has produced the Azure Synapse platform, I see a plethora of needs that could be fulfilled by it. Being in a...
2021-02-12 (first published: 2021-02-08)
340 reads
Using Data Compare with Recent Data Only
This is a post that looks at how to compare data changes in recent data. A customer recently asked me about looking at a table, and choosing specific data...
2021-02-16 (first published: 2021-02-08)
294 reads
How to Prep a SQL Server Availability Group for VM-Level DR Replication
If you have a SQL Server Availability Group (AG) and the VMs are being replicated to a disaster recovery site (cloud or on-prem), chances are the networking topology is...
2021-02-15 (first published: 2021-02-08)
333 reads
Daily Coping 8 Feb 2021
I started to add a daily coping tip to the SQLServerCentral newsletter and to the Community Circle, which is helping me deal with the issues in the world. I’m...
2021-02-08
36 reads
SQLpassion Online Training about Locking, Blocking, and Deadlocking
On February 25, 2021 I will run an SQLpassion Online Training about Locking, Blocking, and Deadlocking in SQL Server – one of my favourite topics! Locks are used by...
2021-02-08
22 reads
SQLpassion Online Training about Locking, Blocking, and Deadlocking
(Be sure to checkout the FREE SQLpassion Performance Tuning Training Plan - you get a weekly email packed with all the essential knowledge you need to know about performance...
2021-02-08
9 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