Left outer join vs NOT EXISTS
And to wrap up the miniseries on IN, EXISTS and JOIN, a look at NOT EXISTS and LEFT OUTER JOIN...
2010-03-25
5,209 reads
Blogs
A little restriction that prevent changing tables in SQL Server 2008
In SQL Server 2008, by default, the option to prevent tables changes is "on". We can have some issues and...
2010-03-24
4,013 reads
Minimizing Fragmentation when Moving data using a Switch
Yesterday was the first day of the SQL Server 2008 R2 airlift.I attended a great session on Implementing a Fast...
2010-03-23
972 reads
Microsoft SQL Server identify I/O bottlenecks
You can also identify I/O bottlenecks by examining the latch waits. These latch waits account for the physical I/O waits...
2010-03-19
2,337 reads
Thoughts on SQL Server Certification
This is probably part 1 of a series, but no guarantees.
Why Certify?
I've been working with SQL Server for 10 years...
2010-03-19
1,842 reads
Scripting database objects in SQL Server 2008
In this article, we would go through the
steps to script the objects in a database using SQL Server 2008....
2010-03-18
2,663 reads
Finding Date Ranges for Calculating Statistics
Finding Date Ranges for Calculating StatisticsI received the following question from a fellow DBA:
I need your input to derive the...
2010-03-17
1,763 reads
Solving All Versus (Select All) SSRS End User Confusion
When developing reports that use Analysis Services as a data source end user can sometimes be confused about some of...
2010-03-16
2,847 reads
Breaking Down TempDB Contention
Breaking Down TempDB Contention
What is tempDB contention? From the outside looking in, tempDB contention may look like any other blocking. There...
2010-03-10
2,763 reads
SSRS – KPIs without Analysis Services
During a recent project I was asked if it was possible to simulate Key Performance Indicator (KPI) images in SQL...
2010-03-09
1,684 reads
Blogs
A Cloud Dependency Failure from Amazon
By Steve Jones
I went to sleep while reading a Kindle book on my phone. I know...
Deploying AI in logistics (the unfiltered version)
A conversation with Jan Laš, CIO at HOPI, about what deploying a data agent...
T-SQL Tuesday #198 Invitation: How Do You Detect Data Changes?
It's time for T-SQL Tuesday #198! This month's topic is change detection. The post T-SQL...
Forums
SPAM Issues May 2026
We suffered a SPAM attack from May 1-6, which unfortunately corresponded with time off...
SQL Password enforcing
Hi to all We have situation at a client where someone is illegally changing...
SQL Password enforcing
Hi to all We have situation at a client where someone is illegally changing...
Question of the Day
Creating a JSON Document III
I have this data in a table called dbo.NFLTeams
TeamID TeamName City YearEstablished ------ -------- ---- --------------- 1 Cowboys Dallas 1960 2 Eagles Philadelphia 1933 3 Packers Green Bay 1919 4 Chiefs Kansas City 1960 5 49ers San Francisco 1946 6 Broncos Denver 1960 7 Seahawks Seattle 1976 8 Patriots New England 1960If I run this code, how many rows are returned?
SELECT TOP 2
json_objectagg('Team' : TeamName)
FROM dbo.NFLTeams;
See possible answers