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order by clause

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  • V venkat116

    Hi, thank u for the reply. But i want Tx rows should come first then Rx rows

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    Luc Pattyn
    wrote on last edited by
    #4

    as Tx > Rx and you want Tx first, descending should do it. :)

    Luc Pattyn [Forum Guidelines] [My Articles] Nil Volentibus Arduum

    Please use <PRE> tags for code snippets, they preserve indentation, improve readability, and make me actually look at the code.

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    • L Luc Pattyn

      as Tx > Rx and you want Tx first, descending should do it. :)

      Luc Pattyn [Forum Guidelines] [My Articles] Nil Volentibus Arduum

      Please use <PRE> tags for code snippets, they preserve indentation, improve readability, and make me actually look at the code.

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      venkat116
      wrote on last edited by
      #5

      It is not working I gave like this ORDER BY LruName, ChName, Type desc

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      • V venkat116

        It is not working I gave like this ORDER BY LruName, ChName, Type desc

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        Luc Pattyn
        wrote on last edited by
        #6

        in your example the Type isn't really relevant to the sort as all (LruName,ChName) combinations are unique already without the Type field. So maybe you want

        order by LruName, Type DESC, ChName

        :)

        Luc Pattyn [Forum Guidelines] [My Articles] Nil Volentibus Arduum

        Please use <PRE> tags for code snippets, they preserve indentation, improve readability, and make me actually look at the code.

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        • L Luc Pattyn

          in your example the Type isn't really relevant to the sort as all (LruName,ChName) combinations are unique already without the Type field. So maybe you want

          order by LruName, Type DESC, ChName

          :)

          Luc Pattyn [Forum Guidelines] [My Articles] Nil Volentibus Arduum

          Please use <PRE> tags for code snippets, they preserve indentation, improve readability, and make me actually look at the code.

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          venkat116
          wrote on last edited by
          #7

          yaah... it is working I got what I want thank u very much.

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          • V venkat116

            Hi All, I have one table containing few columns. LruName, ChName and Type. I want to fetch a query from the above table order by LruName, ChName, Type by using the above query I am getting output like this ------------------------------------------------------------------------------------------------------- LruName ChName Type ADU1 CH1 Tx ADU2 CH2 Tx AHRS1 CH3 Tx AHRS2 CH4 Tx DVS CH24 Rx DVS CH28 Rx DVS CH5 Tx DVS CH6 Tx FADEC1 CH1 Tx FADEC1 CH2 Tx FADEC2 CH3 Tx FADEC2 CH4 Tx NLDW CH8 Tx OAS CH7 Tx ---------------------------------------------------------------------------------------------------------- But I want output like this ---------------------------------------------------------------------------------------------------------- LruName ChName Type ADU1 CH1 Tx ADU2 CH2 Tx AHRS1 CH3 Tx AHRS2 CH4 Tx DVS CH5 Tx DVS CH6 Tx DVS CH24 Rx DVS CH28 Rx FADEC1 CH1 Tx FADEC1 CH2 Tx FADEC2 CH3 Tx FADEC2 CH4 Tx NLDW CH8 Tx OAS CH7 Tx ie I want LruName, Chname and Type to be order wise again in Type Tx ( rows ) should come first then Rx. how to write a query by getting the above results.

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            Chris Meech
            wrote on last edited by
            #8

            One of the problems you are going to have is with the ChName column. It appears as though you want CH5 to appear before CH24. In your order by clause you may have to have it

            order by .... ,length(ChName),ChName, ...

            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]

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            • C Chris Meech

              One of the problems you are going to have is with the ChName column. It appears as though you want CH5 to appear before CH24. In your order by clause you may have to have it

              order by .... ,length(ChName),ChName, ...

              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]

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              venkat116
              wrote on last edited by
              #9

              Hi, Luc Pattyn solved my problem thank you for the reply

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              • C Chris Meech

                One of the problems you are going to have is with the ChName column. It appears as though you want CH5 to appear before CH24. In your order by clause you may have to have it

                order by .... ,length(ChName),ChName, ...

                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]

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                Jorgen Andersson
                wrote on last edited by
                #10

                That's a good solution for a common problem. A five from me even if it wasn't what the OP wanted.

                List of common misconceptions

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                • J Jorgen Andersson

                  That's a good solution for a common problem. A five from me even if it wasn't what the OP wanted.

                  List of common misconceptions

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                  Chris Meech
                  wrote on last edited by
                  #11

                  Thanks Jörgen.

                  Jörgen Andersson wrote:

                  even if it wasn't what the OP wanted.

                  Oddly, in the original post he indicated what output he was after and so I'm pretty sure he is going to have to do something similar to what I offered.

                  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]

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                  • C Chris Meech

                    Thanks Jörgen.

                    Jörgen Andersson wrote:

                    even if it wasn't what the OP wanted.

                    Oddly, in the original post he indicated what output he was after and so I'm pretty sure he is going to have to do something similar to what I offered.

                    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]

                    J Offline
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                    Jorgen Andersson
                    wrote on last edited by
                    #12

                    I thought so too, and was contemplating looking up a stringsplit function that does the same job in a much more tortuous way.

                    List of common misconceptions

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                    • J Jorgen Andersson

                      That's a good solution for a common problem. A five from me even if it wasn't what the OP wanted.

                      List of common misconceptions

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                      David Skelly
                      wrote on last edited by
                      #13

                      I have a feeling it's only going to work if all the name values start with the same prefix. Supposing I have: A1 A20 A999 C1 C99 Sorting them by length(name), name would give: A1 C1 A20 C99 A999 So it would solve the OP's specific problem where all names appear to start with CH but I'm not sure it works as a general solution.

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                      • D David Skelly

                        I have a feeling it's only going to work if all the name values start with the same prefix. Supposing I have: A1 A20 A999 C1 C99 Sorting them by length(name), name would give: A1 C1 A20 C99 A999 So it would solve the OP's specific problem where all names appear to start with CH but I'm not sure it works as a general solution.

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                        Jorgen Andersson
                        wrote on last edited by
                        #14

                        I believe you're quite correct. We have exactly this issue and have solved it with a separate sortcolumn. But this isn't always a viable solution, and then one has to build a natural sort function[^].

                        List of common misconceptions

                        1 Reply Last reply
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                        • V venkat116

                          Hi All, I have one table containing few columns. LruName, ChName and Type. I want to fetch a query from the above table order by LruName, ChName, Type by using the above query I am getting output like this ------------------------------------------------------------------------------------------------------- LruName ChName Type ADU1 CH1 Tx ADU2 CH2 Tx AHRS1 CH3 Tx AHRS2 CH4 Tx DVS CH24 Rx DVS CH28 Rx DVS CH5 Tx DVS CH6 Tx FADEC1 CH1 Tx FADEC1 CH2 Tx FADEC2 CH3 Tx FADEC2 CH4 Tx NLDW CH8 Tx OAS CH7 Tx ---------------------------------------------------------------------------------------------------------- But I want output like this ---------------------------------------------------------------------------------------------------------- LruName ChName Type ADU1 CH1 Tx ADU2 CH2 Tx AHRS1 CH3 Tx AHRS2 CH4 Tx DVS CH5 Tx DVS CH6 Tx DVS CH24 Rx DVS CH28 Rx FADEC1 CH1 Tx FADEC1 CH2 Tx FADEC2 CH3 Tx FADEC2 CH4 Tx NLDW CH8 Tx OAS CH7 Tx ie I want LruName, Chname and Type to be order wise again in Type Tx ( rows ) should come first then Rx. how to write a query by getting the above results.

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                          Prasanta_Prince
                          wrote on last edited by
                          #15

                          just the following,-
                          order by LruName, ChName, Type DESC

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