Duplicate & Overlapping Indexes can be a drag on write speed and disk resources. How do we find and eliminate them quickly and effectively?
2016-07-08 (first published: 2014-06-16)
46,669 reads
What are natively compiled stored procedures? Why would we want to use them and what are the performance benefits of using them over classic disk-based stored procedures?
2016-05-20 (first published: 2014-08-04)
25,111 reads
Have you ever wanted to run a query across every database on a server with the convenience of a stored procedure? If so, Microsoft provided a stored procedure to do so. It’s unreliable, outdated, and somewhat obfuscated, though. Let’s improve on it!
2016-04-15 (first published: 2014-12-01)
17,103 reads
It sounds simple enough. Either your column will always have a value or it may not. Yet somehow such a seemingly simple decision can become a never-ending debate where database schema begins to resemble superstition and designing effective tables seems more contentious than you expected it to be.
2016-02-26 (first published: 2014-10-30)
27,476 reads
Cursors are considered by many to be the bane of good T-SQL. What are the best ways to avoid iterative T-SQL and to write queries that look and perform beautifully? This first part in an ongoing series of cursor-killing handles inter-row analysis.
2015-12-18 (first published: 2014-05-27)
22,755 reads
CONNECT ANY DATABASE is one of three new permissions in SQL Server 2014 that can be granted to server logins. What is this new permission good for and why would we ever want this?
2014-07-29
15,256 reads
SQL Server 2012 introduced columnstore indexes, which can immensely improve the performance of OLAP queries. How were they updated and improved in SQL Server 2014?
2014-07-24
8,450 reads
SQL Server 2014 has a number of new DMVs, and some changes from SQL Server 2012. What are the new views and changes, and how can be useful to you?
2014-07-08
4,694 reads
There were many new DMVs added in SQL Server 2012, and some that have changed since SQL Server 2008 R2. This is a brief overview of the biggest changes and what they mean to you!
2014-07-03
6,151 reads
Statistics keep track of our data and will tell SQL Server how to make the best optimization decisions. Knowing how they work can make understanding query and performance problems much easier!
2014-06-09
5,733 reads
By Arun Sirpal
“What exactly did it do on my server?” is the first question a DBA...
By James Serra
Microsoft shared a broad set of Fabric, Power BI, and SQL updates at FabCon...
By Steve Jones
No, I’m not quitting or retiring. Just going on vacation, but I leave tonight...
Comments posted to this topic are about the item Let's Talk Certifications
Comments posted to this topic are about the item The Hidden Security Risks of...
Comments posted to this topic are about the item 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