'Immutable' databases operate under the principle that data or objects should not be modified after they are created. Once again they hold the promise of providing strong consistency combined with horizontal read scalability, and built-in caching. Are Immutable databases a new idea? Are they different in any way from the mainstream RDBMSs?
Data Compression and Snapshot Isolation don't play well together, you may not see a performance benefit
Microsoft has released a final service pack for SQL Server 2008 R2, which many of you might want to install.
Following on from a webcast, Tim Smith answers some questions on SQL Server security like: Is It Better To Mask At the Application Level Or The SQL Server Database Level? Are there any options to find SSNs in SQL Server besides RegEx? And, why would anyone store sensitive data un-encrypted in SQL Server?
This editorial was orignally published on Dec 8, 2009. It is being re-run as Steve is on vacation. Would you like the idea of capturing everything you do? Audio, video, text, code, a log of your life. A new book from Microsoft Research talks about this and Steve Jones things it could be an interesting capability for your career.
Since SQL Server delivered the entire range of window functions, there has been far less justification for using the non-standard ex-Sybase 'Quirky Update' tricks to perform the many permutations of running totals in SQL Server. One of these related problems is the 'Data Smear'. Do window functions make this easier, and what is performance like? Dwain Camps investigates.
How do you grow your career? Steve Jones has a few ideas on what you can do to both improve your skills and build your brand.
Easily synchronize live Salesforce data with SQL Server using the Salesforce SSIS DataFlow Tasks.
Aaron Bertrand recently answered a question from a user who wanted to convert all of their SQL Server computed columns to be persisted. This allows you to shift the SQL Server cost of performing the computation from query time to the time of the insert/update, at the cost of storage. In this tip, Aaron shows you how.
Join Red Gate’s Alex Yates and TeamCity for a free webinar this Thursday, October 2nd. In this practical demo, Alex will show you how to set up continuous delivery for your SQL databases using TeamCity, Red Gate’s SQL Automation Pack, and Octopus Deploy. Places are limited – register now.
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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