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    Call for Presentations - Qt World Summit

    Selecting data from mysql using qt?

    General and Desktop
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    • D
      doforumda last edited by

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

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      • L
        lyuts last edited by

        [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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        • D
          Dii last edited by

          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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          • D
            doforumda last edited by

            the file my.cnf is in etc/mysql folder

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            • D
              Dii last edited by

              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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              • D
                doforumda last edited by

                this is the socket line in my.cnf

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

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                • D
                  Dii last edited by

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

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

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                  • D
                    doforumda last edited by

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

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                    • D
                      Dii last edited by

                      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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                      • D
                        doforumda last edited by

                        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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                        • L
                          lyuts last edited by

                          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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                          • D
                            Dii last edited by

                            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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                            • D
                              Dii last edited by

                              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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                              • D
                                Dii last edited by

                                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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                                • D
                                  doforumda last edited by

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

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                                  • D
                                    doforumda last edited by

                                    the permissions on mysql.sock it read write exe for all types of users

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                                    • D
                                      Dii last edited by

                                      Great, don't give up, we are close :D

                                      ls -l /opt/lampp/var/mysql/*

                                      maybe you have another mysql config file somewhere:

                                      ls -l /opt/lampp/etc/my.cnf
                                      or
                                      ls -l /opt/lampp/etc/mysql/my.cnf
                                      ?

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                                      • D
                                        Dii last edited by

                                        gosh... all with sudo please

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                                        • D
                                          doforumda last edited by

                                          i got this output from this command sudo ls -l /opt/lampp/var/mysql/*

                                          the output is too long so i am posting it in pieces
                                          @
                                          root@zafar-laptop:/# ls -l opt/lampp/var/mysql/*
                                          -rw-rw---- 1 nobody nogroup 10485760 2010-10-10 22:58 opt/lampp/var/mysql/ibdata1
                                          -rw-rw---- 1 nobody nogroup 5242880 2010-10-11 12:20 opt/lampp/var/mysql/ib_logfile0
                                          -rw-rw---- 1 nobody nogroup 5242880 2010-10-09 20:01 opt/lampp/var/mysql/ib_logfile1
                                          srwxrwxrwx 1 nobody nogroup 0 2010-10-11 12:20 opt/lampp/var/mysql/mysql.sock
                                          -rw-r--r-- 1 nobody root 6 2008-12-02 10:52 opt/lampp/var/mysql/mysql_upgrade_info
                                          -rw-rw---- 1 nobody root 3658 2010-10-11 12:20 opt/lampp/var/mysql/zafar-laptop.err
                                          -rw-rw---- 1 nobody nogroup 5 2010-10-11 12:20 opt/lampp/var/mysql/zafar-laptop.pid

                                          opt/lampp/var/mysql/cdcol:
                                          total 20
                                          -rw-rw---- 1 nobody root 8658 2007-03-23 20:54 cds.frm
                                          -rw-rw---- 1 nobody root 172 2009-07-30 11:58 cds.MYD
                                          -rw-rw---- 1 nobody root 2048 2009-07-30 12:29 cds.MYI

                                          opt/lampp/var/mysql/mysql:
                                          total 5324
                                          -rw-rw---- 1 nobody root 8820 2008-12-02 10:52 columns_priv.frm
                                          -rw-rw---- 1 nobody root 23490 2008-12-02 10:52 columns_priv.MYD
                                          -rw-rw---- 1 nobody root 8192 2008-12-02 10:52 columns_priv.MYI
                                          -rw-rw---- 1 nobody root 9582 2008-12-02 10:52 db.frm
                                          -rw-rw---- 1 nobody root 2200 2010-10-11 21:41 db.MYD
                                          -rw-rw---- 1 nobody root 5120 2010-10-11 21:41 db.MYI
                                          -rw-rw---- 1 nobody root 10223 2008-12-02 10:52 event.frm
                                          -rw-rw---- 1 nobody root 0 2008-12-02 10:52 event.MYD
                                          -rw-rw---- 1 nobody root 2048 2008-12-02 10:52 event.MYI
                                          -rw-rw---- 1 nobody root 8665 2008-12-02 10:52 func.frm
                                          -rw-rw---- 1 nobody root 0 2008-12-02 10:52 func.MYD
                                          -rw-rw---- 1 nobody root 1024 2008-12-02 10:52 func.MYI
                                          -rw-rw---- 1 nobody root 35 2008-12-02 12:19 general_log.CSM
                                          -rw-rw---- 1 nobody root 0 2008-12-02 10:52 general_log.CSV
                                          -rw-rw---- 1 nobody root 8776 2008-12-02 10:52 general_log.frm
                                          -rw-rw---- 1 nobody root 8700 2008-12-02 10:52 help_category.frm
                                          -rw-rw---- 1 nobody root 0 2008-12-02 10:52 help_category.MYD
                                          -rw-rw---- 1 nobody root 1024 2008-12-02 10:52 help_category.MYI
                                          -rw-rw---- 1 nobody root 8612 2008-12-02 10:52 help_keyword.frm
                                          -rw-rw---- 1 nobody root 0 2008-12-02 10:52 help_keyword.MYD
                                          -rw-rw---- 1 nobody root 1024 2008-12-02 10:52 help_keyword.MYI
                                          -rw-rw---- 1 nobody root 8630 2008-12-02 10:52 help_relation.frm
                                          -rw-rw---- 1 nobody root 0 2008-12-02 10:52 help_relation.MYD
                                          -rw-rw---- 1 nobody root 1024 2008-12-02 10:52 help_relation.MYI
                                          -rw-rw---- 1 nobody root 8770 2008-12-02 10:52 help_topic.frm
                                          -rw-rw---- 1 nobody root 0 2008-12-02 10:52 help_topic.MYD
                                          -rw-rw---- 1 nobody root 1024 2008-12-02 10:52 help_topic.MYI
                                          -rw-rw---- 1 nobody root 9510 2008-12-02 10:52 host.frm
                                          -rw-rw---- 1 nobody root 0 2008-12-02 10:52 host.MYD
                                          -rw-rw---- 1 nobody root 2048 2008-12-02 10:52 host.MYI
                                          -rw-rw---- 1 nobody root 8778 2008-12-02 10:52 ndb_binlog_index.frm
                                          -rw-rw---- 1 nobody root 0 2008-12-02 10:52 ndb_binlog_index.MYD
                                          -rw-rw---- 1 nobody root 1024 2008-12-02 10:52 ndb_binlog_index.MYI
                                          -rw-rw---- 1 nobody root 8586 2008-12-02 10:52 plugin.frm
                                          -rw-rw---- 1 nobody root 1154 2009-04-10 10:16 plugin.MYD
                                          -rw-rw---- 1 nobody root 2048 2009-04-10 10:16 plugin.MYI
                                          -rw-rw---- 1 nobody root 9996 2008-12-02 10:52 proc.frm
                                          -rw-rw---- 1 nobody root 740 2008-12-02 12:14 proc.MYD
                                          -rw-rw---- 1 nobody root 4096 2008-12-02 12:19 proc.MYI
                                          -rw-rw---- 1 nobody root 8875 2008-12-02 10:52 procs_priv.frm
                                          -rw-rw---- 1 nobody root 0 2008-12-02 10:52 procs_priv.MYD
                                          -rw-rw---- 1 nobody root 4096 2008-12-02 10:52 procs_priv.MYI
                                          -rw-rw---- 1 nobody root 8838 2008-12-02 10:52 servers.frm
                                          -rw-rw---- 1 nobody root 0 2008-12-02 10:52 servers.MYD
                                          -rw-rw---- 1 nobody root 1024 2008-12-02 10:52 servers.MYI
                                          -rw-rw---- 1 nobody root 35 2008-12-02 12:19 slow_log.CSM
                                          -rw-rw---- 1 nobody root 0 2008-12-02 10:52 slow_log.CSV
                                          -rw-rw---- 1 nobody root 8976 2008-12-02 10:52 slow_log.frm
                                          -rw-rw---- 1 nobody root 8955 2008-12-02 10:52 tables_priv.frm
                                          -rw-rw---- 1 nobody root 3404 2008-12-02 10:52 tables_priv.MYD
                                          -rw-rw---- 1 nobody root 8192 2008-12-02 10:52 tables_priv.MYI
                                          -rw-rw---- 1 nobody root 8636 2007-03-23 20:54 time_zone.frm
                                          -rw-rw---- 1 nobody root 8624 2008-12-02 10:52 time_zone_leap_second.frm
                                          -rw-rw---- 1 nobody root 0 2008-12-02 10:52 time_zone_leap_second.MYD
                                          -rw-rw---- 1 nobody root 1024 2008-12-02 10:52 time_zone_leap_second.MYI
                                          -rw-rw---- 1 nobody root 11795 2008-12-30 14:16 time_zone.MYD
                                          -rw-rw---- 1 nobody root 19456 2008-12-30 14:16 time_zone.MYI
                                          -rw-rw---- 1 nobody root 8606 2008-12-02 10:52 time_zone_name.frm
                                          -rw-rw---- 1 nobody root 331945 2008-12-30 14:16 time_zone_name.MYD
                                          -rw-rw---- 1 nobody root 37888 2008-12-30 14:16 time_zone_name.MYI
                                          -rw-rw---- 1 nobody root 8686 2008-12-30 14:16 time_zone_transition.frm
                                          -rw-rw---- 1 nobody root 1992570 2008-12-30 14:16 time_zone_transition.MYD
                                          -rw-rw---- 1 nobody root 2216960 2008-12-30 14:16 time_zone_transition.MYI
                                          -rw-rw---- 1 nobody root 8748 2008-12-30 14:16 time_zone_transition_type.frm
                                          -rw-rw---- 1 nobody root 293208 2008-12-30 14:16 time_zone_transition_type.MYD
                                          -rw-rw---- 1 nobody root 112640 2008-12-30 14:16 time_zone_transition_type.MYI
                                          -rw-rw---- 1 nobody root 10466 2008-12-02 10:52 user.frm
                                          -rw-rw---- 1 nobody root 388 2010-10-11 21:41 user.MYD
                                          -rw-rw---- 1 nobody root 2048 2010-10-11 21:41 user.MYI

                                          @

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                                          • D
                                            doforumda last edited by

                                            @
                                            opt/lampp/var/mysql/phpmyadmin:
                                            total 144
                                            -rw-rw---- 1 nobody root 54 2004-12-06 15:56 db.opt
                                            -rw-rw---- 1 nobody root 8682 2007-03-23 20:54 pma_bookmark.frm
                                            -rw-rw---- 1 nobody root 0 2007-03-23 20:54 pma_bookmark.MYD
                                            -rw-rw---- 1 nobody root 1024 2007-03-23 20:54 pma_bookmark.MYI
                                            -rw-rw---- 1 nobody root 12964 2007-03-23 20:54 pma_column_info.frm
                                            -rw-rw---- 1 nobody root 0 2007-03-23 20:54 pma_column_info.MYD
                                            -rw-rw---- 1 nobody root 1024 2007-03-23 20:54 pma_column_info.MYI
                                            -rw-rw---- 1 nobody root 8704 2007-03-11 11:50 pma_designer_coords.frm
                                            -rw-rw---- 1 nobody root 0 2007-03-11 11:50 pma_designer_coords.MYD
                                            -rw-rw---- 1 nobody root 1024 2007-03-11 11:50 pma_designer_coords.MYI
                                            -rw-rw---- 1 nobody root 8730 2007-03-23 20:54 pma_history.frm
                                            -rw-rw---- 1 nobody root 560 2010-10-11 12:21 pma_history.MYD
                                            -rw-rw---- 1 nobody root 5120 2010-10-11 12:21 pma_history.MYI
                                            -rw-rw---- 1 nobody root 8644 2007-03-23 20:54 pma_pdf_pages.frm
                                            -rw-rw---- 1 nobody root 0 2007-03-23 20:54 pma_pdf_pages.MYD
                                            -rw-rw---- 1 nobody root 1024 2007-03-23 20:54 pma_pdf_pages.MYI
                                            -rw-rw---- 1 nobody root 8800 2007-03-23 20:54 pma_relation.frm
                                            -rw-rw---- 1 nobody root 0 2007-03-23 20:54 pma_relation.MYD
                                            -rw-rw---- 1 nobody root 1024 2007-03-23 20:54 pma_relation.MYI
                                            -rw-rw---- 1 nobody root 8708 2007-03-23 20:54 pma_table_coords.frm
                                            -rw-rw---- 1 nobody root 0 2007-03-23 20:54 pma_table_coords.MYD
                                            -rw-rw---- 1 nobody root 1024 2007-03-23 20:54 pma_table_coords.MYI
                                            -rw-rw---- 1 nobody root 8656 2007-03-23 20:54 pma_table_info.frm
                                            -rw-rw---- 1 nobody root 0 2007-03-23 20:54 pma_table_info.MYD
                                            -rw-rw---- 1 nobody root 1024 2007-03-23 20:54 pma_table_info.MYI

                                            opt/lampp/var/mysql/test:
                                            total 0

                                            opt/lampp/var/mysql/testTwo:
                                            total 24
                                            -rw-rw---- 1 nobody nogroup 65 2010-10-10 13:13 db.opt
                                            -rw-rw---- 1 nobody nogroup 8634 2010-10-10 13:14 testTable.frm
                                            -rw-rw---- 1 nobody nogroup 44 2010-10-10 13:15 testTable.MYD
                                            -rw-rw---- 1 nobody nogroup 2048 2010-10-10 22:58 testTable.MYI
                                            root@zafar-laptop:/#
                                            root@zafar-laptop:/# sudo ls -l opt/lampp/var/mysql/*
                                            -rw-rw---- 1 nobody nogroup 10485760 2010-10-10 22:58 opt/lampp/var/mysql/ibdata1
                                            -rw-rw---- 1 nobody nogroup 5242880 2010-10-11 12:20 opt/lampp/var/mysql/ib_logfile0
                                            -rw-rw---- 1 nobody nogroup 5242880 2010-10-09 20:01 opt/lampp/var/mysql/ib_logfile1
                                            srwxrwxrwx 1 nobody nogroup 0 2010-10-11 12:20 opt/lampp/var/mysql/mysql.sock
                                            -rw-r--r-- 1 nobody root 6 2008-12-02 10:52 opt/lampp/var/mysql/mysql_upgrade_info
                                            -rw-rw---- 1 nobody root 3658 2010-10-11 12:20 opt/lampp/var/mysql/zafar-laptop.err
                                            -rw-rw---- 1 nobody nogroup 5 2010-10-11 12:20 opt/lampp/var/mysql/zafar-laptop.pid

                                            @

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