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Is it not possible to open M.S. access file?

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  • hskoglundH Online
    hskoglundH Online
    hskoglund
    wrote on last edited by
    #12

    Hi, I googled a bit and found this thread

    So if you do not have Microsoft Office installed you need to download the driver for MS Access .accdb files

    Andy314A 1 Reply Last reply
    2
    • hskoglundH hskoglund

      Hi, I googled a bit and found this thread

      So if you do not have Microsoft Office installed you need to download the driver for MS Access .accdb files

      Andy314A Offline
      Andy314A Offline
      Andy314
      wrote on last edited by Andy314
      #13

      Indeed you must install the Access ODBC driver. The driver is independent from installed Office !
      (Be aware Windows like to kill this driver after windows-update. So you must reinstall it sometimes.)

      Then you must look in the ODBC tool from windows to find out the correct driver name. This is the correct for me (is not the same as you use):
      "DRIVER={Microsoft Access Driver (*.mdb, *.accdb)};"

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      • R Offline
        R Offline
        rockon209
        wrote on last edited by
        #14

        @hskoglund

        i already tried downloaded and intalled the drivers, even though i have M.S Office installed on my computer. But getting the same error.

        Andy314A 1 Reply Last reply
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        • R rockon209

          @hskoglund

          i already tried downloaded and intalled the drivers, even though i have M.S Office installed on my computer. But getting the same error.

          Andy314A Offline
          Andy314A Offline
          Andy314
          wrote on last edited by
          #15

          Hi @rockon209
          which Qt Version do you use?

          1 Reply Last reply
          0
          • R Offline
            R Offline
            rockon209
            wrote on last edited by
            #16

            @Andy314
            I am using Qt 5.7.0

            Andy314A 1 Reply Last reply
            0
            • R rockon209

              @Andy314
              I am using Qt 5.7.0

              Andy314A Offline
              Andy314A Offline
              Andy314
              wrote on last edited by Andy314
              #17

              Hi @rockon209
              the QtCompany had the idea to do not distribute the binarys for the ODBC driver anymore. That was in Version 5.5 and 5.6 I think. I initiated a discussion about it. The result was that the driver should be integrated again. I dont know if this is in 5.7 really the case.

              Look if you have in the path like C:\Qt2\5.6\msvc2015\plugins\sqldrivers
              the qsqlodbc files.

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              • R Offline
                R Offline
                rockon209
                wrote on last edited by
                #18

                @Andy314

                yes the file is present in the path.

                Andy314A 1 Reply Last reply
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                • R rockon209

                  @Andy314

                  yes the file is present in the path.

                  Andy314A Offline
                  Andy314A Offline
                  Andy314
                  wrote on last edited by
                  #19

                  Hello @rockon209,
                  oh I am happy :-)

                  Now your Problem:
                  It must work ! I use it since 1 year.

                  We must find the error systhematic.
                  First you should try a connection via the windows Windows-ODBC tool.
                  I there is something wrong we must not look on Qt.

                  1 Reply Last reply
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                  • R Offline
                    R Offline
                    rockon209
                    wrote on last edited by
                    #20

                    @Andy314
                    How to do that bcoz i new to this database access. I dont know how it works. Could you help me?

                    Andy314A D 2 Replies Last reply
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                    • R rockon209

                      @Andy314
                      How to do that bcoz i new to this database access. I dont know how it works. Could you help me?

                      Andy314A Offline
                      Andy314A Offline
                      Andy314
                      wrote on last edited by
                      #21

                      Hi @rockon209

                      Search in Windows for "ODBC".
                      Open the Program, dont know the english name. Something like "ODBC-Datasource 32-bit"
                      Tabpage Drivers: Is there a entry like Microsoft Access Driver (*.mdb, *.accdb) ?

                      more later...

                      1 Reply Last reply
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                      • R rockon209

                        @Andy314
                        How to do that bcoz i new to this database access. I dont know how it works. Could you help me?

                        D Offline
                        D Offline
                        Devopia53
                        wrote on last edited by Devopia53
                        #22

                        @rockon209

                        Hi.

                        Perhaps, you have a very minor problem.
                        Compare the connection strings below.

                        db.setDatabaseName("Driver={Microsoft Access Driver(*.mdb, *.accdb)}; DBQ=C:/MyFolder/Database1.accdb;"); // It's not OK!
                        
                        db.setDatabaseName("Driver={Microsoft Access Driver (*.mdb, *.accdb)}; DBQ=C:/MyFolder/Database1.accdb;"); // It's OK!
                        

                        The ODBC driver is installed by default on Windows.

                        Andy314A 1 Reply Last reply
                        1
                        • R Offline
                          R Offline
                          rockon209
                          wrote on last edited by
                          #23

                          @Andy314

                          Yes entry is there in the Drivers Tab

                          @Devopia53
                          i tried it doest work same error again

                          1 Reply Last reply
                          0
                          • D Devopia53

                            @rockon209

                            Hi.

                            Perhaps, you have a very minor problem.
                            Compare the connection strings below.

                            db.setDatabaseName("Driver={Microsoft Access Driver(*.mdb, *.accdb)}; DBQ=C:/MyFolder/Database1.accdb;"); // It's not OK!
                            
                            db.setDatabaseName("Driver={Microsoft Access Driver (*.mdb, *.accdb)}; DBQ=C:/MyFolder/Database1.accdb;"); // It's OK!
                            

                            The ODBC driver is installed by default on Windows.

                            Andy314A Offline
                            Andy314A Offline
                            Andy314
                            wrote on last edited by
                            #24

                            Jup, use exactly the name shown in the ODBC tool !!!!!

                            1 Reply Last reply
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                            • R Offline
                              R Offline
                              rockon209
                              wrote on last edited by
                              #25

                              ok thank you very much guys it worked i was not using the proper syntax.
                              Thank you very much.

                              Andy314A 1 Reply Last reply
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                              • R rockon209

                                ok thank you very much guys it worked i was not using the proper syntax.
                                Thank you very much.

                                Andy314A Offline
                                Andy314A Offline
                                Andy314
                                wrote on last edited by Andy314
                                #26

                                Go in the ODBC tool to the File-DSN tab.

                                Top right button like Add or Create new
                                choose the Access odbc driver -> click >>
                                as next set a filename -> click >>
                                next windows choose a *.accdb file
                                ready -> you have a DSN file which defines the connection.

                                I thought the ODBC tool has a function to test this connection directly, but it has not. So a file.dsn testing program would be nice ....
                                I found out a testing methode with Excel Data Tab->Extern Data -> Data connection Assistant -> ODBC DSN -> and choosed the pervious integrated dsn-file.

                                Nevertheless you should use the content of this file as the connect string in Qt.
                                only DRIVER and DBQ are important here.

                                and you should check in Qt:
                                ```
                                bool ok=QSqlDatabase::isDriverAvailable("QODBC");
                                if(!ok)
                                {
                                ErrorMsg="No ODBC driver available!";
                                return 1;
                                }

                                1 Reply Last reply
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                                • K Offline
                                  K Offline
                                  konglyn
                                  wrote on last edited by
                                  #27

                                  i guess your os is win7 x64 and you are using Qt 5.7 x64 with access 2013 x86
                                  try installing access 2013 runtime x64 , you can download it from microsoft

                                  1 Reply Last reply
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