Too often, denormalization is suggested as the first thing to consider when tackling query performance problems. It is said to be a necessary compromise to be made when a rigorous logical design hits an inadequate database system. As the saying goes, “Normalize ‘til it hurts, then denormalize ‘til it works”. In reality, Denormalization always leads eventually to tears.
2008-07-28
7,924 reads
SQL Server 2008 introduces the Database Backup Compression feature. This article describes how to take advantage of this new feature
2008-07-25
2,029 reads
This article presents an excerpt from the book, Microsoft SQL Server 2005 Reporting Services Step by Step, by Stacia Misner and Hitachi Consulting. Learn how to monitor reporting services by implementing an execution logging database and reviewing reports that query that database.
2008-07-25
2,797 reads
Here the author introduces SQL Server Data Services, which exposes its functionality over standard Web service interfaces.
2008-07-24
2,158 reads
Part 4 in this series on upgrading an Active/Active cluster to SQL Server 2005 details how to push live data from one cluster to another using a conversion DB and replication.
2008-07-24
3,014 reads
Over the years, I have witnessed many developers being confused about when to use data-manipulation language (DML) triggers vs. when to use constraints.
2008-07-23
2,759 reads
With ranking functions in SQL Server 2005, you can rank rows in result sets. This tip defines rank functions and gives examples of how to use the four available functions.
2008-07-22
5,594 reads
Learn how to monitor database-level actions and write audit results to files.
2008-07-22
2,557 reads
It is irritating, sometimes alarming, for the user to be confronted by the 'deadlock message' when a deadlock happens. It can be a tiresome business to prevent them from occurring in applications. Fortunately, the profiler can be used to help DBAs identify how deadlocking problems happen, and indicate the best way of minimising the likelihood of their reappearance.
2008-07-21
5,295 reads
While working on a project recently I was asked to develop a mechanism that would provide the dates for state and federal holidays in a given year. Since this project deals with all states and territories of the United States, the list had to be comprehensive and the client asked that this list be in the form of a SQL query calculated on-the-fly, rather than a static list.
2008-07-21
5,482 reads
PlanTrace: Stop Reading Redshift EXPLAIN Plans. Start Seeing Them Introducing PlanTrace — a free, browser-based...
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...
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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