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Reading, Writing, and Riskmetic


Reading, Writing, and Riskmetic

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Andy Warren
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Comments posted to this topic are about the item Reading, Writing, and Riskmetic

Andy
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Koen Verbeeck
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Nice question, thanks Andy!


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rhythmk
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Another confusing question Sad
A newly hired developer who works remotely has asked for permission to run Profiler so he can see the reads/writes used by his queries


Permission to run profiler Unsure

(Here answer should be Alter Trace)

OR

Require the smallest amount of additional permissions to be granted

Unsure

However even I am not sure if SET STATISTICS IO is enough to check a best performing query.

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Koen Verbeeck
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rhythmk (6/19/2014)
Another confusing question Sad
A newly hired developer who works remotely has asked for permission to run Profiler so he can see the reads/writes used by his queries


Permission to run profiler Unsure

(Here answer should be Alter Trace)

OR

Require the smallest amount of additional permissions to be granted

Unsure

However even I am not sure if SET STATISTICS IO is enough to check a best performing query.


I think the motive behind the question is something like this:
the developer has no clue what actual permissions he needs, so he aims for the big guns and asks for profiler.
However, the question clearly states that he only wants to see reads/writes (in other words, IO). The question then says he has only read permissions on the database.

So the experienced DBA teaches the developer SET STATISTICS IO. It meets the requirements and doesn't require extra permissions.


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Neil Burton
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I got one of Andy's right!!!!!!!


On two occasions I have been asked, "Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?" ... I am not able rightly to apprehend the kind of confusion of ideas that could provoke such a question.
—Charles Babbage, Passages from the Life of a Philosopher

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Ford Fairlane
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Thanks for the QoTD, Exclamation must learn to read the question before rushing off to answer it.

Hope this helps...

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paul.knibbs
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Yeah, I didn't put enough thought into this one...just thought "What's the minimum permission required to run Profiler?" rather than "What's the minimum required to do what the developer actually needs?". Heck, you'd think including SET STATISTICS IO as an answer would have been a big enough clue, but apparently not... :-)
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Thanks for interesting question Andy.

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Those who understand binary, and those who don't."
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I might start refusing to answer Andy's questions because I just get annoyed when I get them wrong! :-)
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The problem, however, is that statistics IO lies any time there are scalar UDFs in use. The profiler trace doesn't.

Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

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