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  3. Table column count competition

Table column count competition

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  • P PIEBALDconsult

    GuyThiebaut wrote:

    required for each row

    GuyThiebaut wrote:

    medical database

    I'm not convinced -- if the table had columns for right and left arm etc., what did you do for patients with missing arms? Leave NULLs? I'd prefer to have different tables for different body parts. :-D

    Mike HankeyM Offline
    Mike HankeyM Offline
    Mike Hankey
    wrote on last edited by
    #7

    and how would you represent a person that is a dick head?

    VS2010/Atmel Studio 6.0 ToDo Manager Extension
    Version 3.0 now available. There is no place like 127.0.0.1

    A G P 3 Replies Last reply
    0
    • Mike HankeyM Mike Hankey

      and how would you represent a person that is a dick head?

      VS2010/Atmel Studio 6.0 ToDo Manager Extension
      Version 3.0 now available. There is no place like 127.0.0.1

      A Offline
      A Offline
      AspDotNetDev
      wrote on last edited by
      #8

      I'd add a record to the [Brendan Fraser] table.

      Thou mewling ill-breeding pignut!

      J 1 Reply Last reply
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      • Mike HankeyM Mike Hankey

        and how would you represent a person that is a dick head?

        VS2010/Atmel Studio 6.0 ToDo Manager Extension
        Version 3.0 now available. There is no place like 127.0.0.1

        G Offline
        G Offline
        GuyThiebaut
        wrote on last edited by
        #9

        :laugh: :laugh: :laugh: +5

        “That which can be asserted without evidence, can be dismissed without evidence.”

        ― Christopher Hitchens

        1 Reply Last reply
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        • V Vasily Tserekh

          I have a table in the application i am developing of 155 columns i dare anyone to beat me:mad: ps. the table is already in 3rd normal form

          D Offline
          D Offline
          dan sh
          wrote on last edited by
          #10

          Assuming you use SQL 2008, you are still 29845 short.

          "The worst code you'll come across is code you wrote last year.", wizardzz[^]

          1 Reply Last reply
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          • A AspDotNetDev

            I'd add a record to the [Brendan Fraser] table.

            Thou mewling ill-breeding pignut!

            J Offline
            J Offline
            jeron1
            wrote on last edited by
            #11

            AspDotNetDev wrote:

            [Brendan Fraser] table.

            Congratulations! You have just won the 'Came Out of Left Field Reference of the Day' award (COOLFRODA). :-D

            1 Reply Last reply
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            • Mike HankeyM Mike Hankey

              and how would you represent a person that is a dick head?

              VS2010/Atmel Studio 6.0 ToDo Manager Extension
              Version 3.0 now available. There is no place like 127.0.0.1

              P Offline
              P Offline
              PIEBALDconsult
              wrote on last edited by
              #12

              Referential integrity would prevent that.

              Mike HankeyM 1 Reply Last reply
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              • P PIEBALDconsult

                Referential integrity would prevent that.

                Mike HankeyM Offline
                Mike HankeyM Offline
                Mike Hankey
                wrote on last edited by
                #13

                So would birth control!

                VS2010/Atmel Studio 6.0 ToDo Manager Extension
                Version 3.0 now available. There is no place like 127.0.0.1

                P 1 Reply Last reply
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                • A AspDotNetDev

                  Darn, highest I could find was 84, using this query:

                  SELECT
                  t.Name AS [Table Name],
                  COUNT(*) AS [Column Count]
                  FROM sys.Tables AS t
                  JOIN sys.Columns AS C
                  ON t.Object_ID = c.Object_ID
                  GROUP BY
                  t.Name
                  ORDER BY
                  COUNT(*) DESC

                  Credit to Pinal Dave for most of the code.

                  Thou mewling ill-breeding pignut!

                  P Offline
                  P Offline
                  PIEBALDconsult
                  wrote on last edited by
                  #14

                  SELECT TOP 1 * FROM
                  (
                  SELECT s.Name AS [Schema name]
                  , t.Name AS [Table Name]
                  , COUNT(*) AS [Column Count]
                  FROM sys.Tables AS t
                  JOIN sys.Schemas AS s
                  ON T.schema_id=s.schema_id
                  JOIN sys.Columns AS C
                  ON t.Object_ID = c.Object_ID
                  GROUP BY s.Name,t.Name
                  ) T
                  ORDER BY [Column Count] DESC

                  Shows me 107.

                  1 Reply Last reply
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                  • Mike HankeyM Mike Hankey

                    So would birth control!

                    VS2010/Atmel Studio 6.0 ToDo Manager Extension
                    Version 3.0 now available. There is no place like 127.0.0.1

                    P Offline
                    P Offline
                    PIEBALDconsult
                    wrote on last edited by
                    #15

                    Too late for that.

                    Mike HankeyM L 2 Replies Last reply
                    0
                    • P PIEBALDconsult

                      Too late for that.

                      Mike HankeyM Offline
                      Mike HankeyM Offline
                      Mike Hankey
                      wrote on last edited by
                      #16

                      I'd recommend a lobotomy, but I'm afraid Mr. Fraiser has already had his!

                      VS2010/Atmel Studio 6.0 ToDo Manager Extension
                      Version 3.0 now available. There is no place like 127.0.0.1

                      1 Reply Last reply
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                      • P PIEBALDconsult

                        Too late for that.

                        L Offline
                        L Offline
                        lewax00
                        wrote on last edited by
                        #17

                        Murder is just late term birth control.

                        1 Reply Last reply
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                        • V Vasily Tserekh

                          I have a table in the application i am developing of 155 columns i dare anyone to beat me:mad: ps. the table is already in 3rd normal form

                          E Offline
                          E Offline
                          Ennis Ray Lynch Jr
                          wrote on last edited by
                          #18

                          Move it to the fourth normal and get rid of the nulls.

                          Need custom software developed? I do custom programming based primarily on MS tools with an emphasis on C# development and consulting. I also do Android Programming as I find it a refreshing break from the MS. "And they, since they Were not the one dead, turned to their affairs" -- Robert Frost

                          L 1 Reply Last reply
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                          • V Vasily Tserekh

                            I have a table in the application i am developing of 155 columns i dare anyone to beat me:mad: ps. the table is already in 3rd normal form

                            J Offline
                            J Offline
                            Jeremy Hutchinson
                            wrote on last edited by
                            #19

                            We have a table with 289 columns. It's in our insurance reserves calculating database, and I have no idea what the table actually does, and I don't think I want to know (there are 7 tables with more than 140 columns)

                            My Blog[^] Chess Tactics for WP7[^]

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                            • P PIEBALDconsult

                              GuyThiebaut wrote:

                              required for each row

                              GuyThiebaut wrote:

                              medical database

                              I'm not convinced -- if the table had columns for right and left arm etc., what did you do for patients with missing arms? Leave NULLs? I'd prefer to have different tables for different body parts. :-D

                              G Offline
                              G Offline
                              GuyThiebaut
                              wrote on last edited by
                              #20

                              Yes there are better ways of representing the data - it all depends on what you are going to do with it. If you are just looking at a simple full table scan then a wide row can be the best approach. The difficulty is that when you design your tables inevitably six months later there will be a better way to store the data based on how you now want to query it. In the end you just do the best you can with the information you have at the time and rely on the database engine to do the optimisation for you later - if things get really slow you can always de-normalise your data...

                              “That which can be asserted without evidence, can be dismissed without evidence.”

                              ― Christopher Hitchens

                              1 Reply Last reply
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                              • V Vasily Tserekh

                                I have a table in the application i am developing of 155 columns i dare anyone to beat me:mad: ps. the table is already in 3rd normal form

                                L Offline
                                L Offline
                                Lost User
                                wrote on last edited by
                                #21

                                Vasily Tserekh wrote:

                                I have a table in the application i am developing of 155 columns i dare anyone to beat me:mad:
                                ps. the table is already in 3rd normal form

                                155 attributes, all depending on the same key? And none that depend on a part of the key? No repeating groups? All atomic values? Show me :)

                                Bastard Programmer from Hell :suss:

                                V 1 Reply Last reply
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                                • V Vasily Tserekh

                                  I have a table in the application i am developing of 155 columns i dare anyone to beat me:mad: ps. the table is already in 3rd normal form

                                  M Offline
                                  M Offline
                                  Mycroft Holmes
                                  wrote on last edited by
                                  #22

                                  I needed to supply some data to a stress test system using SQL 2005, ran out of columns when I hit 1200, I was hoping to create a temp table with 3.6k columns because I could then use my nifty table to CSV utility. Devised a different strategy. I have seen many systems with over 200 columns in a table, usually legacy apps that migrated from power users to core system somehow.

                                  Never underestimate the power of human stupidity RAH

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                                  • V Vasily Tserekh

                                    I have a table in the application i am developing of 155 columns i dare anyone to beat me:mad: ps. the table is already in 3rd normal form

                                    M Offline
                                    M Offline
                                    Matt Gullett
                                    wrote on last edited by
                                    #23

                                    We have plenty of 3rd normal tables with more than 1024 columns (they are split across multiple tables). Market research surveys have a large number of data points sometimes.

                                    1 Reply Last reply
                                    0
                                    • L Lost User

                                      Vasily Tserekh wrote:

                                      I have a table in the application i am developing of 155 columns i dare anyone to beat me:mad:
                                      ps. the table is already in 3rd normal form

                                      155 attributes, all depending on the same key? And none that depend on a part of the key? No repeating groups? All atomic values? Show me :)

                                      Bastard Programmer from Hell :suss:

                                      V Offline
                                      V Offline
                                      Vasily Tserekh
                                      wrote on last edited by
                                      #24

                                      its an inspection form and every value its a part of the inspection list

                                      L 1 Reply Last reply
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                                      • V Vasily Tserekh

                                        its an inspection form and every value its a part of the inspection list

                                        L Offline
                                        L Offline
                                        Lost User
                                        wrote on last edited by
                                        #25

                                        That's not an argument. I can show you a lot forms crammed with unrelated data - I want to see 155 attributes in 3NF, and them being in the same form doesn't necessarily mean that they should be in the same table. Simply listing their names will do :)

                                        Bastard Programmer from Hell :suss:

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                                        • E Ennis Ray Lynch Jr

                                          Move it to the fourth normal and get rid of the nulls.

                                          Need custom software developed? I do custom programming based primarily on MS tools with an emphasis on C# development and consulting. I also do Android Programming as I find it a refreshing break from the MS. "And they, since they Were not the one dead, turned to their affairs" -- Robert Frost

                                          L Offline
                                          L Offline
                                          Lost User
                                          wrote on last edited by
                                          #26

                                          If it's that easy, then why do we rarely see a decently normalized database? OT; From the third, you'd go to BCNF. I don't see much added value in removing the optional fields.

                                          Bastard Programmer from Hell :suss:

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