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Selecting data from mysql using qt?

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    doforumda
    wrote on last edited by
    #87

    i have a folder inside lampp with the name logs. is it the one which your are talking about

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      lyuts
      wrote on last edited by
      #88

      Solution 1:
      @find /opt/lampp -name '*.log'@
      This might need sudo'ing.

      Solution 2:
      If 1st fails then you need to find the config files for mysql (it should be located in /opt/lampp directory) and try to find out what is the location of mysql's log files.

      I'm a rebel in the S.D.G.

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        doforumda
        wrote on last edited by
        #89

        there are 6 files in there but no mysql.log

        these are the files
        access_log, cgisock.1693, error_log, httpd.pid, php_error_log, ssl_request_log

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          Dii
          wrote on last edited by
          #90

          Don't bother with the log files, I guess Qt looks at the wrong place for the socket file...

          Let's check this line in your mysql config file (my.cnf):

          socket = /var/run/mysqld/mysqld.sock

          You should find my.cnf in /etc/ or /etc/mysql/ ... I don't know ubuntu that much.

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            doforumda
            wrote on last edited by
            #91

            1st solution returns this
            @
            root@zafar-laptop:/# find /opt/lampp -name *.log
            /opt/lampp/htdocs/xampp/contrib/sqlnet.log
            @

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              doforumda
              wrote on last edited by
              #92

              with which editor i can view that .conf file. with gedit or something.

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                lyuts
                wrote on last edited by
                #93

                [quote author="¤ Dii ¤" date="1286881470"]
                You should find my.cnf in /etc/ or /etc/mysql/ ... I don't know ubuntu that much.[/quote]

                I don't think that this config will be in /etc. He uses lampp - a preconfigured bundle. That config might be in /opt/lampp.

                I'm a rebel in the S.D.G.

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                  Dii
                  wrote on last edited by
                  #94

                  BTW a quick sum:

                  • mysql is installed
                  • database and tables are created
                  • access is granted
                  • qt code looks fine

                  I see two possibilities here: libmysqlclient is missing, or the socket file is at different place.

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                    doforumda
                    wrote on last edited by
                    #95

                    the file my.cnf is in etc/mysql folder

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                      Dii
                      wrote on last edited by
                      #96

                      doforumda: use gedit

                      sudo gedit /etc/mysql/my.cnf

                      at least most of the ubuntu machines have the config file there.

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                        doforumda
                        wrote on last edited by
                        #97

                        this is the socket line in my.cnf

                        @
                        socket = /var/run/mysqld/mysqld.sock
                        @

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                          Dii
                          wrote on last edited by
                          #98

                          ok then the wrong socket guess was wrong... but let's make it sure:

                          sudo ls -l /var/run/mysqld/*

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                            doforumda
                            wrote on last edited by
                            #99

                            after running this sudo ls -l /var/run/mysqld/* there is nothing inside run directory

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                              Dii
                              wrote on last edited by
                              #100

                              uhmmmmmmm that's more than strange, the socket file should be there somewhere, let's find it:

                              find /var -name mysqld.sock

                              if no result:

                              find /opt -name mysqld.sock

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                                doforumda
                                wrote on last edited by
                                #101

                                both of them didnt return any resutl

                                @
                                root@zafar-laptop:/# find /var -name mysqld.sock
                                root@zafar-laptop:/# find /opt -name mysqld.sock
                                root@zafar-laptop:/#
                                @

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                                  lyuts
                                  wrote on last edited by
                                  #102

                                  I have bitnami lampp stack installed and when I start it then the socket file is created in /opt/lamppstack/mysql/tmp/mysql.sock. I think doforumda shoudl have similar directory and we need to check the permissions for that directory.

                                  I'm a rebel in the S.D.G.

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                                    Dii
                                    wrote on last edited by
                                    #103

                                    Usually that means, that the mysql daemon is not running... but the the command line should not work as well... ;(

                                    It doesn't hurt to try to start the daemon:

                                    sudo /etc/init.d/mysql start

                                    ... and do the search for the socket file as above.

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                                      Dii
                                      wrote on last edited by
                                      #104

                                      gosh, do the find with sudo:

                                      sudo find /opt -name mysqld.sock
                                      sudo find /var -name mysqld.sock

                                      damn, I always forget that with ubuntu

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                                        Dii
                                        wrote on last edited by
                                        #105

                                        lyuts: yes, if he have the socket file at the same place, we need to symlink it to the /var/... location and happy end :) I hope so.

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                                          doforumda
                                          wrote on last edited by
                                          #106

                                          tyut: yes i have one file with the name of mysql.sock in /opt/lampp/var/mysql/mysql.sock

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