Channel 9 Forums - Tech Off - Good SQL Fizz Buzz http://mschnlnine.vo.llnwd.net/d1/Dev/App_Themes/C9/images/feedimage.png Channel 9 Forums - Tech Off - Good SQL Fizz Buzz http://channel9.msdn.com/Forums Channel 9 keeps you up to date with the latest news and behind the scenes info from Microsoft that developers love to keep up with. From LINQ to SilverLight – Watch videos and hear about all the cool technologies coming and the people behind them. http://channel9.msdn.com/Forums en Sat, 25 May 2013 12:57:52 GMT Sat, 25 May 2013 12:57:52 GMT Rev9 17 -17 -1 Tech Off - Good SQL Fizz Buzz Slight Rewrite (developed it over a coffee break):

--Given

Declare @OldNode Varchar(5)
Select @OldNode = '90909'

Declare @OldPath  varchar(1000)
Select @OldPath = '//90012/90909/90000'

--and
--if(Len(@OldNode) = 5) -- This will always return true

/*

Using TSQL:

1)Assign the value of '90606' to a new variable called NewNode.
2)Using OldNode and OldPath replace the instance of OldNode in OldPath with the value of NewNode and assign the result to a new variable called NewPath. Print the results to Messages. 

*/

]]> http://channel9.msdn.com/Forums/TechOff/258449-Good-SQL-Fizz-Buzz/258449#258449 Tue, 23 Oct 2007 17:54:51 GMT http://channel9.msdn.com/Forums/TechOff/258449-Good-SQL-Fizz-Buzz/258449#258449 odujosh 17 http://channel9.msdn.com/Niners/odujosh/Discussions/RSS Tech Off - Good SQL Fizz Buzz Thats the bonus question Wink I did a slight rewrite to clarify the question.

]]> http://channel9.msdn.com/Forums/TechOff/258449-Good-SQL-Fizz-Buzz/8f5e81c27aa5448195ae9df901036e85#8f5e81c27aa5448195ae9df901036e85 Tue, 23 Oct 2007 17:54:51 GMT http://channel9.msdn.com/Forums/TechOff/258449-Good-SQL-Fizz-Buzz/8f5e81c27aa5448195ae9df901036e85#8f5e81c27aa5448195ae9df901036e85 odujosh 17 http://channel9.msdn.com/Niners/odujosh/Discussions/RSS Tech Off - Good SQL Fizz Buzz And if you get asked what '--' you can save yourself all kinds of time interviewing someone.

]]> http://channel9.msdn.com/Forums/TechOff/258449-Good-SQL-Fizz-Buzz/f7342603cba64ba2a6959df90103756c#f7342603cba64ba2a6959df90103756c Tue, 23 Oct 2007 17:58:52 GMT http://channel9.msdn.com/Forums/TechOff/258449-Good-SQL-Fizz-Buzz/f7342603cba64ba2a6959df90103756c#f7342603cba64ba2a6959df90103756c odujosh 17 http://channel9.msdn.com/Niners/odujosh/Discussions/RSS Tech Off - Good SQL Fizz Buzz Well, if the candidate understood TSQL comments, would the next part be identify the mission closing quotation? Smiley

I remember reading Atwoods article and thinking to myself (after knowing how I would do it in C#) how would I ask that question and answer it in TSQL?

The answers others posted online after that were very interesting! I had to admit if I had been interviewed on the spot with that question I could not have been as creative in TSQL as many others were.

]]> http://channel9.msdn.com/Forums/TechOff/258449-Good-SQL-Fizz-Buzz/fc27f5df358e4610a4999df9010375ee#fc27f5df358e4610a4999df9010375ee Tue, 23 Oct 2007 18:46:19 GMT http://channel9.msdn.com/Forums/TechOff/258449-Good-SQL-Fizz-Buzz/fc27f5df358e4610a4999df9010375ee#fc27f5df358e4610a4999df9010375ee JohnnyAwesome 17 http://channel9.msdn.com/Niners/JohnnyAwesome/Discussions/RSS Tech Off - Good SQL Fizz Buzz Sadly, I had to look up the syntax for replace and I'm assuming that you mean using the print function when you refer to messages?  Or are you talking about raiseerror.

]]> http://channel9.msdn.com/Forums/TechOff/258449-Good-SQL-Fizz-Buzz/ca616f8b9d884a6889759df901036f0a#ca616f8b9d884a6889759df901036f0a Tue, 23 Oct 2007 20:04:27 GMT http://channel9.msdn.com/Forums/TechOff/258449-Good-SQL-Fizz-Buzz/ca616f8b9d884a6889759df901036f0a#ca616f8b9d884a6889759df901036f0a ScanIAm 17 http://channel9.msdn.com/Niners/ScanIAm/Discussions/RSS Tech Off - Good SQL Fizz Buzz
odujosh wrote:
Declare @OldNode = '90909'

Is this even valid TSQL syntax?

]]> http://channel9.msdn.com/Forums/TechOff/258449-Good-SQL-Fizz-Buzz/4c73fed03974435cbaa49df901036f8e#4c73fed03974435cbaa49df901036f8e Tue, 23 Oct 2007 21:05:38 GMT http://channel9.msdn.com/Forums/TechOff/258449-Good-SQL-Fizz-Buzz/4c73fed03974435cbaa49df901036f8e#4c73fed03974435cbaa49df901036f8e JChung2006 17 http://channel9.msdn.com/Niners/JChung2006/Discussions/RSS Tech Off - Good SQL Fizz Buzz
JChung2006 wrote:

odujosh wrote:
Declare @OldNode = '90909'

Is this even valid TSQL syntax?


Lazyness fixed sorry. Wish TSQL was smarter Smiley

]]> http://channel9.msdn.com/Forums/TechOff/258449-Good-SQL-Fizz-Buzz/0c2372b6ff774e4b82c19df901037016#0c2372b6ff774e4b82c19df901037016 Tue, 23 Oct 2007 21:09:32 GMT http://channel9.msdn.com/Forums/TechOff/258449-Good-SQL-Fizz-Buzz/0c2372b6ff774e4b82c19df901037016#0c2372b6ff774e4b82c19df901037016 odujosh 17 http://channel9.msdn.com/Niners/odujosh/Discussions/RSS Tech Off - Good SQL Fizz Buzz
ScanIAm wrote:
Sadly, I had to look up the syntax for replace and I'm assuming that you mean using the print function when you refer to messages?  Or are you talking about raiseerror.




Hint: Requires Left, Right, LEN, and PatIndex You could also write it with Substring if you enjoy pain or are more comfi.

I would accept Print or Select. Really knowing the differences is trivial. Seeing whether you can think through the problem is more interesting.

'You' being sample candidate.

]]> http://channel9.msdn.com/Forums/TechOff/258449-Good-SQL-Fizz-Buzz/a2ec80fa51214afba64b9df90103709b#a2ec80fa51214afba64b9df90103709b Tue, 23 Oct 2007 21:12:04 GMT http://channel9.msdn.com/Forums/TechOff/258449-Good-SQL-Fizz-Buzz/a2ec80fa51214afba64b9df90103709b#a2ec80fa51214afba64b9df90103709b odujosh 17 http://channel9.msdn.com/Niners/odujosh/Discussions/RSS Tech Off - Good SQL Fizz Buzz Just write a SQL-CLR function and call that Smiley

]]> http://channel9.msdn.com/Forums/TechOff/258449-Good-SQL-Fizz-Buzz/c78d84c9cc944092b4879df90103711e#c78d84c9cc944092b4879df90103711e Tue, 23 Oct 2007 22:34:48 GMT http://channel9.msdn.com/Forums/TechOff/258449-Good-SQL-Fizz-Buzz/c78d84c9cc944092b4879df90103711e#c78d84c9cc944092b4879df90103711e PerfectPhase 17 http://channel9.msdn.com/Niners/PerfectPhase/Discussions/RSS Tech Off - Good SQL Fizz Buzz
PerfectPhase wrote:
Just write a SQL-CLR function and call that Smiley


Hahahaha. Certainly that would be the best choice in the present day.

People forget about fundamentals and what it was like walking uphill both ways to school. They other day I was talking with a friend about a UDF I had dropped into a database for an old client that performed a RegEx search pretty similar to Ken Henderson's sample here and he was baffled by my approach.

I forgot to add it was SQL Server 2000 base being accessed by a classic ASP request. I thought I read an article this week or last (I want to say it was by Rob Conery) about how we are now at a point where a lot of people only know .NET already. The concept and clunkiness of old school approaches are now foreign. I think that is good and bad, personally.

]]> http://channel9.msdn.com/Forums/TechOff/258449-Good-SQL-Fizz-Buzz/45a1a69c3cf944b4a9fa9df9010371a5#45a1a69c3cf944b4a9fa9df9010371a5 Tue, 23 Oct 2007 22:52:42 GMT http://channel9.msdn.com/Forums/TechOff/258449-Good-SQL-Fizz-Buzz/45a1a69c3cf944b4a9fa9df9010371a5#45a1a69c3cf944b4a9fa9df9010371a5 JohnnyAwesome 17 http://channel9.msdn.com/Niners/JohnnyAwesome/Discussions/RSS Tech Off - Good SQL Fizz Buzz
PerfectPhase wrote:
Just write a SQL-CLR function and call that Smiley


Start a why use something you don't need argument here.

]]> http://channel9.msdn.com/Forums/TechOff/258449-Good-SQL-Fizz-Buzz/53dd3f0493b4407cb9b49df901037223#53dd3f0493b4407cb9b49df901037223 Wed, 24 Oct 2007 16:53:07 GMT http://channel9.msdn.com/Forums/TechOff/258449-Good-SQL-Fizz-Buzz/53dd3f0493b4407cb9b49df901037223#53dd3f0493b4407cb9b49df901037223 odujosh 17 http://channel9.msdn.com/Niners/odujosh/Discussions/RSS Tech Off - Good SQL Fizz Buzz
PerfectPhase wrote:
Just write a SQL-CLR function and call that Smiley

Congratulations!  You've turned a simple code problem into a deployment headache?

]]> http://channel9.msdn.com/Forums/TechOff/258449-Good-SQL-Fizz-Buzz/c06afc734ede48baaed89df90103729b#c06afc734ede48baaed89df90103729b Wed, 24 Oct 2007 17:01:23 GMT http://channel9.msdn.com/Forums/TechOff/258449-Good-SQL-Fizz-Buzz/c06afc734ede48baaed89df90103729b#c06afc734ede48baaed89df90103729b JChung2006 17 http://channel9.msdn.com/Niners/JChung2006/Discussions/RSS Tech Off - Good SQL Fizz Buzz Gee, a nice sample. But the list of tasks should actually be
 
* find a flaw in the materialized path persistence design (based on the four lines of code above)
* propose a fix
* write a piece of code to replace node A with node B and reparent node A's children
* and yeah, print whatever the result is

]]> http://channel9.msdn.com/Forums/TechOff/258449-Good-SQL-Fizz-Buzz/d756b4693f9145d3a7949df901037307#d756b4693f9145d3a7949df901037307 Wed, 24 Oct 2007 18:14:34 GMT http://channel9.msdn.com/Forums/TechOff/258449-Good-SQL-Fizz-Buzz/d756b4693f9145d3a7949df901037307#d756b4693f9145d3a7949df901037307 sokhaty 17 http://channel9.msdn.com/Niners/sokhaty/Discussions/RSS Tech Off - Good SQL Fizz Buzz
odujosh wrote:

ScanIAm wrote:
Sadly, I had to look up the syntax for replace and I'm assuming that you mean using the print function when you refer to messages?  Or are you talking about raiseerror.



Hint: Requires Left, Right, LEN, and PatIndex You could also write it with Substring if you enjoy pain or are more comfi.

I would accept Print or Select. Really knowing the differences is trivial. Seeing whether you can think through the problem is more interesting.

'You' being sample candidate.


I'm not sure if you changed the criteria, but once you declare the missing variables and load them up, the replacement requires 1 line of code:

Select @NewPath = REPLACE(@OldPath, @OldNode, @NewNode)

Am I missing something?

]]> http://channel9.msdn.com/Forums/TechOff/258449-Good-SQL-Fizz-Buzz/2ae952933d8f419aa8539df90103738c#2ae952933d8f419aa8539df90103738c Wed, 24 Oct 2007 20:14:47 GMT http://channel9.msdn.com/Forums/TechOff/258449-Good-SQL-Fizz-Buzz/2ae952933d8f419aa8539df90103738c#2ae952933d8f419aa8539df90103738c ScanIAm 17 http://channel9.msdn.com/Niners/ScanIAm/Discussions/RSS Tech Off - Good SQL Fizz Buzz
ScanIAm wrote:

odujosh wrote:

ScanIAm wrote:
Sadly, I had to look up the syntax for replace and I'm assuming that you mean using the print function when you refer to messages?  Or are you talking about raiseerror.



Hint: Requires Left, Right, LEN, and PatIndex You could also write it with Substring if you enjoy pain or are more comfi.

I would accept Print or Select. Really knowing the differences is trivial. Seeing whether you can think through the problem is more interesting.

'You' being sample candidate.


I'm not sure if you changed the criteria, but once you declare the missing variables and load them up, the replacement requires 1 line of code:

Select @NewPath = REPLACE(@OldPath, @OldNode, @NewNode)

Am I missing something?


Definitely you are, try the case with OldPath set to "//4789237/90909/9090901/909092"
and see what happens.
But the point is that the original design is suboptimal (which can be considered flawed).

]]> http://channel9.msdn.com/Forums/TechOff/258449-Good-SQL-Fizz-Buzz/3b77b8caa7ca41b8950b9df9010373dc#3b77b8caa7ca41b8950b9df9010373dc Wed, 24 Oct 2007 20:31:28 GMT http://channel9.msdn.com/Forums/TechOff/258449-Good-SQL-Fizz-Buzz/3b77b8caa7ca41b8950b9df9010373dc#3b77b8caa7ca41b8950b9df9010373dc sokhaty 17 http://channel9.msdn.com/Niners/sokhaty/Discussions/RSS Tech Off - Good SQL Fizz Buzz
ScanIAm wrote:

odujosh wrote:

ScanIAm wrote:
Sadly, I had to look up the syntax for replace and I'm assuming that you mean using the print function when you refer to messages?  Or are you talking about raiseerror.



Hint: Requires Left, Right, LEN, and PatIndex You could also write it with Substring if you enjoy pain or are more comfi.

I would accept Print or Select. Really knowing the differences is trivial. Seeing whether you can think through the problem is more interesting.

'You' being sample candidate.


I'm not sure if you changed the criteria, but once you declare the missing variables and load them up, the replacement requires 1 line of code:

Select @NewPath = REPLACE(@OldPath, @OldNode, @NewNode)

Am I missing something?


REPLACE is not necessary. OldNode only occurs once. And ScanIAm: Length will always be 5. This limits the design to only in number of groups. The number of groups will always be under 10,000 closer to in the hundreds. Its not flawed the designer realizes the limitation.

Though you do show why fixed length is a benifit.

]]> http://channel9.msdn.com/Forums/TechOff/258449-Good-SQL-Fizz-Buzz/dce3840820c1404ca9a89df901037469#dce3840820c1404ca9a89df901037469 Wed, 24 Oct 2007 20:40:44 GMT http://channel9.msdn.com/Forums/TechOff/258449-Good-SQL-Fizz-Buzz/dce3840820c1404ca9a89df901037469#dce3840820c1404ca9a89df901037469 odujosh 17 http://channel9.msdn.com/Niners/odujosh/Discussions/RSS Tech Off - Good SQL Fizz Buzz
JChung2006 wrote:

PerfectPhase wrote:
Just write a SQL-CLR function and call that Smiley

Congratulations!  You've turned a simple code problem into a deployment headache?


What?  It's just another bit of SQL to deploy it and if your using the CLR already, why not. 

]]> http://channel9.msdn.com/Forums/TechOff/258449-Good-SQL-Fizz-Buzz/bbfc9d90f0774d5ab0539df9010374f1#bbfc9d90f0774d5ab0539df9010374f1 Wed, 24 Oct 2007 22:27:46 GMT http://channel9.msdn.com/Forums/TechOff/258449-Good-SQL-Fizz-Buzz/bbfc9d90f0774d5ab0539df9010374f1#bbfc9d90f0774d5ab0539df9010374f1 PerfectPhase 17 http://channel9.msdn.com/Niners/PerfectPhase/Discussions/RSS