Testing in Production
The Apple fall keynote recently didn't work as planned, and it seems as though their systems weren't tested well enough.
The Apple fall keynote recently didn't work as planned, and it seems as though their systems weren't tested well enough.
Retrieving data from Excel, and importing it into SQL Server hasn't the same appeal or glamour as, for example, performing heroics with ill-performing queries. This could be why one hesitates before asking questions about how to do it. Rob Sheldon calms your private doubts and fears by answering those embarrassing questions.
SQL Saturday is coming to Sydney, Australia on October 25, 2014. Join us down under for a free day of SQL Server training and networking. Register while space is available.
A DBA should be working to automate their tasks, and find time to do things that are really important. Like keeping their coffee cup topped off 🙂
Learning how to tune a system is a bit of science and a bit of an art. Gail Shaw gives some guidelines on when you might want to tune and how to go about it so as not to unnecessarily undertake the effort.
IBM has released a free version of its Watson service to help people perform analytics on their data.
In this tip Tim Smith looks at different approaches to stop confidential data from getting into the database.
SQL Server MVP Jeff Moden shows us a new very high performance method to convert an "Adjacency List" to “Nested Sets” on a million node hierarchy in less than a minute and 100,000 nodes in just seconds. Not surprisingly, the "steroids" come in a bottle labeled "Tally Table".
Steve Jones wants to know if you have compelling reasons to upgrade or not upgrade this week.
Test-Driven Development (TDD) involves the repetition of a very short development cycle that begins with an initially-failing test that defines the required functionality, and ends with producing the minimum amount of code to pass that test, and finally refactoring the new code. Michael Sorens continues his introduction to TDD by implementing the first tests and introducing the topics of Test doubles; Test Runners, Constraints and Assertions.
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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 YearEstablished, json_objectagg(city : TeamName) FROM dbo.NFLTeams GROUP BY YearEstablished;See possible answers