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In This Issue |
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From the SQLServerCentral Blogs -
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Editorial - The Dream Machine |
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Hardware is usually important to techies. I see now shortage of discussions and debates about this laptop or that. I see people asking about this machine or that ( the W530 looks niiiiiiiccccceee) and as various Surface tablets are announced, I often find people blogging about what they like or debating the merits on Twitter. In the SQL Server world, there are a few very impressive hardware setups at people's homes. I ran across this post about life at Stripe and there was one benefit listed that caught my eye. In the post, the author says "New employees are asked to send in specifications for their dream machine, which is then built and waiting for them on their first day." I think that's a great benefit, and it shows that the company values their employees and wants to ensure they start off with a little excitement. This Friday I wanted to ask you what you'd do if that were offered to you. Most of us working for corporations get the same type of machine as all other technical employees, but imagine that isn't the case. What machine would you specify if your boss gave you the choice?Personally I like my MacBook Air. It's small, light, comes on instantly, and I find myself really enjoying OSX. The one thing it lacks is some horsepower, and if I need more I'd have to look at either one of the new Macbook Pros or the Lenovo 530. The former is very tempting right now, but the latter would allow me to replace my desktop as well since it can drive four external monitors. If you could spec out your machine when starting a new job tomorrow, what would you want? » Join the debate, and respond to today's editorial on the forums The Voice of the DBA PodcastsWe publish three versions of the podcast each day for you to enjoy.
The podcast feeds are available at sqlservercentral.mevio.com. You can also follow Steve Jones on Twitter: Today's podcast features music by Everyday Jones. No relation, but I stumbled on to them and really like the music. Support this great duo at www.everydayjones.com. They have a great version of Message in a Bottle if you want to check it out. I really appreciate and value feedback on the podcasts. Let us know what you like, don't like, or even send in ideas for the show. If you'd like to comment, post something here. The boss will be sure to read it. » 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 I run the following script how many rows will be in GoTest?
CREATE TABLE GoTest (Id INT IDENTITY(1,1), MyText varchar(20))
GO
INSERT INTO GoTest VALUES ('A')
GO
INSERT INTO GoTest (MyText)
SELECT MyText FROM GoTest
GO 5
Think you know the answer? Click here, and find out if you are right. This question is worth 1 point in this category: T-SQL. 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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SQL Server 2012 Query Performance Tuning SQL Server 2012 Query Performance Tuning leads you through understanding the causes of poor performance, how to identify them, and how to fix them. You’ll learn to be proactive in establishing performance baselines using tools like Performance Monitor and Extended Events. You’ll learn to recognize bottlenecks and defuse them before the phone rings. You’ll learn some quick solutions too, but emphasis is on designing for performance and getting it right, and upon heading off trouble before it occurs. Delight your users. Silence that ringing phone. Put the principles and lessons from SQL Server 2012 Query Performance Tuning into practice today. Get your copy from Amazon today. |
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Yesterday's Question of the Day |
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I create the following 2 tables (#A and #B) and insert the data as shown into the respective tables.
CREATE TABLE #A(S VARCHAR(10),R VARCHAR(10))
INSERT INTO #A
VALUES ('Alpha','D1234')
, ('beta','A1122')
, ('charlie','D1234')
, ('bravo','C1342')
, ('Doug','B1964')
, ('harry','A1122')
CREATE TABLE #B(R VARCHAR(10),S INT)
INSERT INTO #B
VALUES ('D1234',1001)
, ('A1122',4001)
, ('D1234',2001)
, ('C1342',5001)
, ('A1122',3001);
Next I execute the following T-SQL
SELECT tblA.S, tblA.R, subQuery.S
FROM #A tblA
CROSS APPLY (SELECT R, S
FROM #B tblB
WHERE tblA.R = tblB.R
) subQuery;
The question is: how many rows are returned when I execute the above SELECT statement? Answer: 9 Explanation: The APPLY operator allows you to invoke a table-valued function for each row returned by an outer table expression of a query. The table-valued function acts as the right input and the outer table expression acts as the left input. The right input is evaluated for each row from the left input and the rows produced are combined for the final output. The list of columns produced by the APPLY operator is the set of columns in the left input followed by the list of columns returned by the right input. Ref: Using APPLY - http://technet.microsoft.com/en-us/library/ms175156(v=sql.105).aspx |
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Featured Script |
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Check AD membershipCheck AD membership (including nested) using ADSI as linked server. More » |
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Database Pros Who Need Your Help! |
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