Job Application Test from Hell

[PIEBALDconsult]

Sure, but which one? Fred or Joe? I performed some data cleanup, so sue me. :-D Edit: WTF?! How'd it wind up attached to the wrong post? Sorry, just playing through...

modified on Wednesday, November 24, 2010 5:44 PM

[PIEBALDconsult]

Sure, but which one? Fred or Joe? I performed some data cleanup, so sue me. :-D (Now lets see if it stays where it's supposed to be.) :mad:

[PIEBALDconsult]

Pete O'Hanlon wrote:

even takes the fact that your have CapeTown and Cape Town

Have you tested that?

[AspDotNetDev]

He's only looking at the second character. In the case of "CapeTown", that'd be "a". In the case of "Cape Town", that'd be "a". What's there to test?

[Forum Guidelines]

[AspDotNetDev]

PIEBALDconsult wrote:

Sure, but which one? Fred or Joe?

I hadn't noticed that.

[Forum Guidelines]

[AspDotNetDev]

With your above observation that "CapeTown" is first attached to Joe and then to Fred, your message makes more sense. I think I like this interview question... all kinds of details to help root out those who don't pay very good attention (I am apparently one of them). :)

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[PIEBALDconsult]

And the number of characters in an entry.

[NickHighIQ]

First thing's first, the order. It appears to be grouped by Region, the groups are ordered by MIN(Contact) (assuming MIN/MAX works in the way I expect, i.e. SELECT MAX('a', 'z') would return 'z' - never had to do an aggregate over varchar fields, thank GOD) and then ordered by Contact ascending. Thought process: Durban, JBurg, Cape Town - no obvious ordering there, but they're grouped... John, Mary - alphabetical Anna, Fred, Joe - alphabetical John, Frank, Anna - alphabetical (desc), so the earliest name in the alphabet in each region is used to order the regions... So, here's the SQL (SQL Server 2008):

SELECT
Region, Contact
FROM
TheStupidestTableEver
ORDER BY
MIN(Contact) OVER(PARTITION BY Region) desc, Contact

Results:

Region Contact

Durban John
Durban Mary
Johannesburg Frank
Cape Town Anna
Cape Town Fred
Cape Town Joe

So, do I win a prize? ;P In fact, I don't need one, that was a satisfying problem to solve :-D

[Serguei]

SELECT Region, Contact
FROM Fig1
ORDER BY
CASE Region WHEN 'Durban' THEN 1 ELSE 2 END,
Contact

Tip, you can do:

SELECT TOP 100 PERCENT * FROM Fig1

Even better tip: Don't do that - your query doesn't guarantee (although will more than likely result in) the correct ordering. You should have sorted by outerSeq, Contact in the outer query. See http://blogs.msdn.com/b/queryoptteam/archive/2006/03/24/560396.aspx

[Michael Kingsford Gray]

Won't work. The middle "Cape Town" has the blank missing, and is "CapeTown" This makes it a very hard problem.

[Brady Kelly]

Thanks, I especially like the top 100 percent

[altncsab]

This is my solution. Because there was no pre-condition then anything is allowed :-D

declare @T_MyTable Table(Region varchar(200), Contact varchar(200))

select case when Contact = 'Fred' and Region like 'Cape%Town' then 'CapeTown'
when Region like 'Cape%Town' then 'Cape Town'
else Region end Region,
Contact
from @T_MyTable
order by substring(Region,2,1) desc, Contact

[Simon_Duckett]

SELECT [Region], [Contact] FROM Table1 ORDER BY SUBSTRING(REVERSE([Region]), 2, 1), [Contact]

[KP Lee]

This doesn't look like a question geared to testing your SQL skills, but your skill at defining "real" requirements from something that seems very silly at first. 1. Assume the person asking this, isn't a lune escaped from the asylum. 2. Try to find the underlying order that they are requesting. 3. ASK them what the underlying order is, suggesting a possibility. 4 ASK them the schema information you need in order to write the query. Sort of like: I see these regions are all in South Africa. I'm not that informed about that area, are you ordering this query by population? No? What is the order criteria you are using? Then find out if the criteria is in the table you are querying? Or they could be testing your knowledge of DB design and waiting for you to ask why the H the region and the name are stored in the same table in the first place. Failing all that, just answer the question. There are a bunch of ways to do it. You can throw in a case statement in a batch select and select the two fields and order by the case result, the union all solution would work, creating a temp table and joining with it is a third option.

[James H]

SELECT Region, Contact FROM RegionTable ORDER BY SubString(Region,2,1) DESC, Contact ASC

[James H]

Ha - you beat me

[Mark_Wallace]

It's a ridiculous question. If there's a reason for ordering as in ex.2, then there must be data that allows the order in that or another table (area code, telephone dialing code, or whatever). If such data isn't available, then the correct answer to the question would be to add a column for it. Otherwise, if it's just an arbitrary order for existing data, use an arbitrary solution -- the second letter of each location in reverse alphabetical order, for example -- then stuff it up the questioner's @rse.

I wanna be a eunuchs developer! Pass me a bread knife!

[PhilLeTaxi]

Hi, With this request,

SELECT region, contact FROM `localisation` ORDER BY SUBSTRING(region,2,2) DESC, contact ASC

I obtain :

region contact
Durban John
Durban Mary
Johannesburg Frank
Cape Town Anna
Cape Town Fred
CapeTown Joe

The list is ordered regarding the second letter of the region. To avoid the missing blank in CapeTown, the end of the string is cut. Bye

[Brady Kelly]

It didn't strike me as that It's in order of Region, Contact asc, but it starts at the 2nd region, wrapping around to the first.

[Xapp]

SELECT * FROM t ORDER BY SUBSTRING(REPLACE(Region, ' ', '') FROM 2) DESC, Contact ASC Tricky.