Inevitably, every DBA is eventually asked to delete, merge, or otherwise report on duplicate data. There are many tools at our disposal to make this task both simple and efficient to complete. Read on for simple steps and examples to effectively deal with duplicate data.
2014-04-29
6,712 reads
Test-driven development is often taught using simple examples, such as calculating the scores for a game of ten-pin bowling. Using the same practice effectively on a real code base isn’t as easy. This article covers some of the questions that arise when dealing with larger code bases and changing requirements.
2014-04-29
5,710 reads
It is not always easy to do what Excel does with PERCENTILE.INC. Learn what formulas to use in this article.
2014-04-28
4,096 reads
This article outlines how to measure resource usage, and use these measurements to develop quality metrics for Big Data applications.
2014-04-28
4,186 reads
SQLSaturday is a training event for SQL Server professionals and those wanting to learn about SQL Server. This event will be held May 10, 2014. Register while space is available.
2014-04-28 (first published: 2014-04-21)
3,770 reads
There have been some noticable failures of big IT projects this week, but are they always a problem?
2014-04-25
110 reads
Documenting the database is always a challenge, and there are many techniques you can use to help all the people on your team understand what all your tables are used for. David Poole brings us an easy way to implement a framework for documentation.
2014-04-25 (first published: 2011-02-17)
14,644 reads
Michael Sorens aims to make PowerShell a bit easier to get going with by providing a series of collections of general-purpose one-liners to cover most of what you'll need to get useful scripting done.
2014-04-25
6,795 reads
Have you received an XML file that must be migrated into a production database? Today’s workshop dives into an ad hoc method of processing relational datasets delivered in an XML file format.
2014-04-24
4,426 reads
There is a stored procedure that must be run by only one user at a time. In this tip, learn how to prevent multiple users from running the stored procedure at the same time.
2014-04-24
6,094 reads
PlanTrace: Stop Reading Redshift EXPLAIN Plans. Start Seeing Them Introducing PlanTrace — a free, browser-based...
By Steve Jones
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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