Rodney Landrum describes in his own unique style how he, as a working DBA, goes about troubleshooting problem queries, and investigating various types of locking and blocking problems. In the process, he passes on valuable tips learned from practical, and sometimes stressful, experience.
2009-09-02
6,526 reads
This article describes the warning "SQL Server has encountered n occurrence(s) of I/O requests taking longer than 15 seconds to complete on file <filename> in database <dbname>".
2009-09-01
4,018 reads
The second in the Security Audit series looks at securing an individual database.
2009-09-01
3,028 reads
This article, the third in the T-SQL Best Practices series, discusses how to write your code to promote cached plan re-usage. Understanding how white space and comments impact whether a plan is cached or an existing plan is re-used can help you minimize the number of plans your application is caching.
2009-08-31
3,815 reads
When diagnosing issues in SQL Server I've found that sometimes I need to be able to mimic a user's session state when attempting to repeat an error they may be receiving. The smallest differences can completely change the outcome, so I need to ensure all the session settings (QUOTED_IDENTIFIER, ANSI_NULLS, and so forth) are identical between the production session and my test session. Is there an easy way to determine these settings with a single query?
2009-08-31
2,627 reads
The Enterprise Policy Management (EPM) Framework leverages and extends the new Microsoft SQL Server 2008 Policy-Based Management feature across an entire SQL Server enterprise, including down-level instances of SQL Server such as SQL Server 2000 and SQL Server 2005.
2009-08-28
2,290 reads
Microsoft SQL Server 2005 Analysis Services (SSAS) delivers both online analytical processing (OLAP) and data mining functionality for business intelligence applications. This article thoroughly explores the architecture of SSAS and how it can be implemented.
2009-08-28
3,915 reads
Many articles on database administration take the perspective of trying to help you do your job better. We thought we might take a different tack and poke a little fun at some of more egregious mistakes we've seen over the years at IT shops.
2009-08-27
9,660 reads
In this tip I show you how you can use the built-in SQL Server database diagram tool. I go through some of them messages you may get when getting started and then look at various tasks that you would perform using this free tool.
2009-08-27
5,001 reads
The employee dimension presents one of the trickier challenges in data warehouse modeling. These five approaches ease the complication of designing and maintaining a 'Reports To' hierarchy for ever-changing reporting relationships and organizational structures.
2009-08-26
3,651 reads
By Steve Jones
I went to sleep while reading a Kindle book on my phone. I know...
A conversation with Jan Laš, CIO at HOPI, about what deploying a data agent...
It's time for T-SQL Tuesday #198! This month's topic is change detection. The post T-SQL...
We suffered a SPAM attack from May 1-6, which unfortunately corresponded with time off...
Hi to all We have situation at a client where someone is illegally changing...
Hi to all We have situation at a client where someone is illegally changing...
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