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In This Issue |
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From the SQLServerCentral Blogs -
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Editorial - All Flash |
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I was reading a piece recently that was titled: Switch Your Databases to Flash Storage Now or You're Doing It Wrong. It's a provocative piece, one that has lots of strong comments about the author's style and claims. It's from the CTO of Aerospike, a NoSQL database, and it tries to compare the bottleneck of disks to memory to the network, with the conclusion that your money is better spent on faster SSD drives than tons of RAM. I don't know if that's true for NoSQL databases, many of which want to run in memory, but I do think there's something here for SQL Server installations. Many of us do have smaller databases, which are much smaller than 1TB. At those sizes, it does make sense these days to look at an SSD solution for your database. At least for tempdb, now that the MTBF of many SSD vendors is large enough to handle the load. Even if you had to replace a tempdb SSD every year, I'd think the performance improvement would make the investment worthwhile. Technology is changing for data professionals, especially for SQL Server administrators and developers. We are seeing the platform grown and expand, and the changes in what SQL Server allows us to do, and the changes in cost, mean that we should re-evaluate how we approach our systems. Hardware constantly improves, and some of these changes can be a better short term investment than spending a tremendous amount of development and testing time to improve things. In the long run learning to write better code, and choosing better indexes are great solutions, but they'll work well with faster storage, which might buy you the time to improve your skills. » Join the debate, and respond to today's editorial on the forums The Voice of the DBA PodcastsNo podcast today due to the holiday schedule, but they will resume tomorrow. » To submit an article, rant or editorial, log in to the Contribution Center |
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Question of the Day |
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Today's Question: If you run the following code:
declare @NewYearsEve datetime;
declare @NewYearsDay datetime;
set @NewYearsEve = {ts '2012-12-31 23:59:59.997'};
set @NewYearsDay = {d '2013-01-01'};
select @NewYearsDay as NewYearsDay,
@NewYearsEve as NewYearsEve,
dateadd(year, datediff(year,@NewYearsEve, @NewYearsDay),
dateadd(month,datediff(month,@NewYearsEve, @NewYearsDay),
dateadd(day,datediff(day,@NewYearsEve, @NewYearsDay),
dateadd(hour,datediff(hour,@NewYearsEve, @NewYearsDay),
dateadd(minute,datediff(minute,@NewYearsEve, @NewYearsDay),
dateadd(second,datediff(second,@NewYearsEve, @NewYearsDay),
@NewYearsEve
)
)
)
)
)
)as ToTheNewYear;
What is returned as ToTheNewYear? Think you know the answer? Click here, and find out if you are right. This question is worth 1 point in this category: Datetime Functions. We keep track of your score to give you bragging rights against your peers. We'd love to give you credit for your own question and answer. To submit a QOD, simply log in to Contribution Center. |
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Optimize your queries—and obtain simple and elegant solutions to a variety of problems—using window functions in Transact-SQL. Led by T-SQL expert Itzik Ben-Gan, you’ll learn how to apply calculations against sets of rows in a flexible, clear, and efficient manner. Ideal whether you’re a database administrator or developer, this practical guide demonstrates ways to use more than a dozen T-SQL querying solutions to address common business tasks. Get your copy from Amazon today. |
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Yesterday's Question of the Day |
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What will be returned by the following statements? select ((CONVERT(NUMERIC(5,0),123) / CONVERT(NUMERIC(5,0),100)) * 100) AS [Percentage] select ROUND(((CONVERT(Float,123) / CONVERT(Float,100)) * 100),1) AS [Percentag] Answer: 123.000000, 123 Explanation: The conversions take place based on the parameters passed into the CONVERT function. Ref: Cast and convert - http://msdn.microsoft.com/en-us/library/ms187928.aspx |
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Pick up your copy of this great book from MVP Glenn Berry at Amazon today. |
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Featured Script |
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Find failed SQL JobsSimple T-SQL to find failed SQL Agent jobs More » |
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Database Pros Who Need Your Help! |
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