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Job Application Test from Hell

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  • C Chris Meech

    The only obvious ordering sequence is the number of capitalized letters in Region, followed by the Region, followed by the Contact. :)

    Chris Meech I am Canadian. [heard in a local bar] In theory there is no difference between theory and practice. In practice there is. [Yogi Berra] posting about Crystal Reports here is like discussing gay marriage on a catholic church’s website.[Nishant Sivakumar]

    P Offline
    P Offline
    PIEBALDconsult
    wrote on last edited by
    #37

    And the number of characters in an entry.

    1 Reply Last reply
    0
    • B Brady Kelly

      I'm not looking for an answer here, I found my own, but this is quite a hard question. Given the table from Fig.1, write an SQL Select statement that would re-organize the results to look like Fig.2 Fig. 1

      Region

      Contact

      Cape Town

      Fred

      CapeTown

      Joe

      Cape Town

      Anna

      Durban

      John

      Durban

      Mary

      Johannesburg

      Frank

      Fig. 2

      Region

      Contact

      Durban

      John

      Durban

      Mary

      Johannesburg

      Frank

      Cape Town

      Anna

      CapeTown

      Fred

      Cape Town

      Joe

      N Offline
      N Offline
      NickHighIQ
      wrote on last edited by
      #38

      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

      1 Reply Last reply
      0
      • B Brady Kelly

        The ORDER BY clause is invalid in views, inline functions, derived tables, subqueries, and common table expressions, unless TOP or FOR XML is also specified. :) Here is mine, a little more general but very much the same:

        select first.*, 0 outerSeq from (select top(select COUNT(*) from Contacts) * from Contacts where Region >= 'Durban' order by Region, Contact) first
        union all
        select second.*, 1 outerSeq from (select top (select COUNT(*) from Contacts) * from Contacts where Region < 'Durban' order by Region, Contact) as second
        order by outerSeq

        S Offline
        S Offline
        Serguei
        wrote on last edited by
        #39

        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

        B 1 Reply Last reply
        0
        • S Slacker007

          SELECT * FROM YourTable ORDERBY Durban, Johannesburg, CapeTown INTHATORDER

          M Offline
          M Offline
          Michael Kingsford Gray
          wrote on last edited by
          #40

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

          1 Reply Last reply
          0
          • S 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

            B Offline
            B Offline
            Brady Kelly
            wrote on last edited by
            #41

            Thanks, I especially like the top 100 percent

            1 Reply Last reply
            0
            • B Brady Kelly

              I'm not looking for an answer here, I found my own, but this is quite a hard question. Given the table from Fig.1, write an SQL Select statement that would re-organize the results to look like Fig.2 Fig. 1

              Region

              Contact

              Cape Town

              Fred

              CapeTown

              Joe

              Cape Town

              Anna

              Durban

              John

              Durban

              Mary

              Johannesburg

              Frank

              Fig. 2

              Region

              Contact

              Durban

              John

              Durban

              Mary

              Johannesburg

              Frank

              Cape Town

              Anna

              CapeTown

              Fred

              Cape Town

              Joe

              A Offline
              A Offline
              altncsab
              wrote on last edited by
              #42

              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

              1 Reply Last reply
              0
              • B Brady Kelly

                I'm not looking for an answer here, I found my own, but this is quite a hard question. Given the table from Fig.1, write an SQL Select statement that would re-organize the results to look like Fig.2 Fig. 1

                Region

                Contact

                Cape Town

                Fred

                CapeTown

                Joe

                Cape Town

                Anna

                Durban

                John

                Durban

                Mary

                Johannesburg

                Frank

                Fig. 2

                Region

                Contact

                Durban

                John

                Durban

                Mary

                Johannesburg

                Frank

                Cape Town

                Anna

                CapeTown

                Fred

                Cape Town

                Joe

                S Offline
                S Offline
                Simon_Duckett
                wrote on last edited by
                #43

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

                J 1 Reply Last reply
                0
                • B Brady Kelly

                  I'm not looking for an answer here, I found my own, but this is quite a hard question. Given the table from Fig.1, write an SQL Select statement that would re-organize the results to look like Fig.2 Fig. 1

                  Region

                  Contact

                  Cape Town

                  Fred

                  CapeTown

                  Joe

                  Cape Town

                  Anna

                  Durban

                  John

                  Durban

                  Mary

                  Johannesburg

                  Frank

                  Fig. 2

                  Region

                  Contact

                  Durban

                  John

                  Durban

                  Mary

                  Johannesburg

                  Frank

                  Cape Town

                  Anna

                  CapeTown

                  Fred

                  Cape Town

                  Joe

                  K Offline
                  K Offline
                  KP Lee
                  wrote on last edited by
                  #44

                  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.

                  1 Reply Last reply
                  0
                  • B Brady Kelly

                    I'm not looking for an answer here, I found my own, but this is quite a hard question. Given the table from Fig.1, write an SQL Select statement that would re-organize the results to look like Fig.2 Fig. 1

                    Region

                    Contact

                    Cape Town

                    Fred

                    CapeTown

                    Joe

                    Cape Town

                    Anna

                    Durban

                    John

                    Durban

                    Mary

                    Johannesburg

                    Frank

                    Fig. 2

                    Region

                    Contact

                    Durban

                    John

                    Durban

                    Mary

                    Johannesburg

                    Frank

                    Cape Town

                    Anna

                    CapeTown

                    Fred

                    Cape Town

                    Joe

                    J Offline
                    J Offline
                    James H
                    wrote on last edited by
                    #45

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

                    1 Reply Last reply
                    0
                    • S Simon_Duckett

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

                      J Offline
                      J Offline
                      James H
                      wrote on last edited by
                      #46

                      Ha - you beat me

                      1 Reply Last reply
                      0
                      • B Brady Kelly

                        I'm not looking for an answer here, I found my own, but this is quite a hard question. Given the table from Fig.1, write an SQL Select statement that would re-organize the results to look like Fig.2 Fig. 1

                        Region

                        Contact

                        Cape Town

                        Fred

                        CapeTown

                        Joe

                        Cape Town

                        Anna

                        Durban

                        John

                        Durban

                        Mary

                        Johannesburg

                        Frank

                        Fig. 2

                        Region

                        Contact

                        Durban

                        John

                        Durban

                        Mary

                        Johannesburg

                        Frank

                        Cape Town

                        Anna

                        CapeTown

                        Fred

                        Cape Town

                        Joe

                        M Offline
                        M Offline
                        Mark_Wallace
                        wrote on last edited by
                        #47

                        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!

                        B 1 Reply Last reply
                        0
                        • B Brady Kelly

                          I'm not looking for an answer here, I found my own, but this is quite a hard question. Given the table from Fig.1, write an SQL Select statement that would re-organize the results to look like Fig.2 Fig. 1

                          Region

                          Contact

                          Cape Town

                          Fred

                          CapeTown

                          Joe

                          Cape Town

                          Anna

                          Durban

                          John

                          Durban

                          Mary

                          Johannesburg

                          Frank

                          Fig. 2

                          Region

                          Contact

                          Durban

                          John

                          Durban

                          Mary

                          Johannesburg

                          Frank

                          Cape Town

                          Anna

                          CapeTown

                          Fred

                          Cape Town

                          Joe

                          P Offline
                          P Offline
                          PhilLeTaxi
                          wrote on last edited by
                          #48

                          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

                          1 Reply Last reply
                          0
                          • M 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!

                            B Offline
                            B Offline
                            Brady Kelly
                            wrote on last edited by
                            #49

                            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.

                            1 Reply Last reply
                            0
                            • B Brady Kelly

                              I'm not looking for an answer here, I found my own, but this is quite a hard question. Given the table from Fig.1, write an SQL Select statement that would re-organize the results to look like Fig.2 Fig. 1

                              Region

                              Contact

                              Cape Town

                              Fred

                              CapeTown

                              Joe

                              Cape Town

                              Anna

                              Durban

                              John

                              Durban

                              Mary

                              Johannesburg

                              Frank

                              Fig. 2

                              Region

                              Contact

                              Durban

                              John

                              Durban

                              Mary

                              Johannesburg

                              Frank

                              Cape Town

                              Anna

                              CapeTown

                              Fred

                              Cape Town

                              Joe

                              X Offline
                              X Offline
                              Xapp
                              wrote on last edited by
                              #50

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

                              1 Reply Last reply
                              0
                              • B Brady Kelly

                                I'm not looking for an answer here, I found my own, but this is quite a hard question. Given the table from Fig.1, write an SQL Select statement that would re-organize the results to look like Fig.2 Fig. 1

                                Region

                                Contact

                                Cape Town

                                Fred

                                CapeTown

                                Joe

                                Cape Town

                                Anna

                                Durban

                                John

                                Durban

                                Mary

                                Johannesburg

                                Frank

                                Fig. 2

                                Region

                                Contact

                                Durban

                                John

                                Durban

                                Mary

                                Johannesburg

                                Frank

                                Cape Town

                                Anna

                                CapeTown

                                Fred

                                Cape Town

                                Joe

                                P Offline
                                P Offline
                                PhilLeTaxi
                                wrote on last edited by
                                #51

                                Hi Again, Oups, I didn't see the response of James H. which has found the same solution. Sorry for the noise. Bye

                                1 Reply Last reply
                                0
                                • B Brady Kelly

                                  I'm not looking for an answer here, I found my own, but this is quite a hard question. Given the table from Fig.1, write an SQL Select statement that would re-organize the results to look like Fig.2 Fig. 1

                                  Region

                                  Contact

                                  Cape Town

                                  Fred

                                  CapeTown

                                  Joe

                                  Cape Town

                                  Anna

                                  Durban

                                  John

                                  Durban

                                  Mary

                                  Johannesburg

                                  Frank

                                  Fig. 2

                                  Region

                                  Contact

                                  Durban

                                  John

                                  Durban

                                  Mary

                                  Johannesburg

                                  Frank

                                  Cape Town

                                  Anna

                                  CapeTown

                                  Fred

                                  Cape Town

                                  Joe

                                  N Offline
                                  N Offline
                                  Narud Shiro
                                  wrote on last edited by
                                  #52

                                  Guessing that we are using talking of SQL Server, and without using case when, union, or any other thing like them, this is my best: select Region, Contact from Contacts order by replace(Region, ' ', ''), Contact Can you give me a B+ at least, teacher?

                                  P 1 Reply Last reply
                                  0
                                  • N Narud Shiro

                                    Guessing that we are using talking of SQL Server, and without using case when, union, or any other thing like them, this is my best: select Region, Contact from Contacts order by replace(Region, ' ', ''), Contact Can you give me a B+ at least, teacher?

                                    P Offline
                                    P Offline
                                    PhilLeTaxi
                                    wrote on last edited by
                                    #53

                                    Hi, Your request gives this result :

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

                                    This is slightly different from the expected result. Bye

                                    1 Reply Last reply
                                    0
                                    • C Christian Graus

                                      OK, so it's sorted by two fields we can't see ( region and email address ) ?

                                      Christian Graus Driven to the arms of OSX by Vista. Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

                                      G Offline
                                      G Offline
                                      ghle
                                      wrote on last edited by
                                      #54

                                      Christian Graus wrote:

                                      OK, so it's sorted by two fields we can't see ( region and email address ) ?

                                      I think he meant that the test was sent to him via e-mail, not that e-mail was a hidden field.:confused: Heck, I'd just order by the hidden Sequence field. :)

                                      Gary

                                      1 Reply Last reply
                                      0
                                      • B Brady Kelly

                                        I'm not looking for an answer here, I found my own, but this is quite a hard question. Given the table from Fig.1, write an SQL Select statement that would re-organize the results to look like Fig.2 Fig. 1

                                        Region

                                        Contact

                                        Cape Town

                                        Fred

                                        CapeTown

                                        Joe

                                        Cape Town

                                        Anna

                                        Durban

                                        John

                                        Durban

                                        Mary

                                        Johannesburg

                                        Frank

                                        Fig. 2

                                        Region

                                        Contact

                                        Durban

                                        John

                                        Durban

                                        Mary

                                        Johannesburg

                                        Frank

                                        Cape Town

                                        Anna

                                        CapeTown

                                        Fred

                                        Cape Town

                                        Joe

                                        M Offline
                                        M Offline
                                        Member 96
                                        wrote on last edited by
                                        #55

                                        A job application test that doesn't reflect a real world problem is an utter waste of time and whoever devised this should be kicked in the balls and repeatedly told to "get real".


                                        “If you want to build a ship, don't drum up people together to collect wood and don't assign them tasks and work, but rather teach them to long for the endless immensity of the sea” - Antoine de Saint-Exupery

                                        B 1 Reply Last reply
                                        0
                                        • B Brady Kelly

                                          I'm not looking for an answer here, I found my own, but this is quite a hard question. Given the table from Fig.1, write an SQL Select statement that would re-organize the results to look like Fig.2 Fig. 1

                                          Region

                                          Contact

                                          Cape Town

                                          Fred

                                          CapeTown

                                          Joe

                                          Cape Town

                                          Anna

                                          Durban

                                          John

                                          Durban

                                          Mary

                                          Johannesburg

                                          Frank

                                          Fig. 2

                                          Region

                                          Contact

                                          Durban

                                          John

                                          Durban

                                          Mary

                                          Johannesburg

                                          Frank

                                          Cape Town

                                          Anna

                                          CapeTown

                                          Fred

                                          Cape Town

                                          Joe

                                          K Offline
                                          K Offline
                                          Kirk Wood
                                          wrote on last edited by
                                          #56

                                          SELECT 'look for different job' FROM 'places not full of self serving jerks who wish to prove their supposed superiority' Personally, my experience is that places that serve up such a test are full of jerks who think too highly of themselves. They find great pride in their ability to find questions few can answer, and probably can't produce anything worth having anyway. The number of people who think they are great far exceeds the number who really are great.

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