Selecting data from mysql using qt?

lyuts · wrote on 12 Oct 2010, 11:07

[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.

Dii · wrote on 12 Oct 2010, 11:08

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.

doforumda · wrote on 12 Oct 2010, 11:09

the file my.cnf is in etc/mysql folder

Dii · wrote on 12 Oct 2010, 11:10

doforumda: use gedit

sudo gedit /etc/mysql/my.cnf

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

doforumda · wrote on 12 Oct 2010, 11:10

this is the socket line in my.cnf

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

Dii · wrote on 12 Oct 2010, 11:13

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

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

doforumda · wrote on 12 Oct 2010, 11:16

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

Dii · wrote on 12 Oct 2010, 11:20

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

doforumda · wrote on 12 Oct 2010, 11:23

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:/#
@

lyuts · wrote on 12 Oct 2010, 11:27

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.

Dii · wrote on 12 Oct 2010, 11:28

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.

Dii · wrote on 12 Oct 2010, 11:29

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

Dii · wrote on 12 Oct 2010, 11:30

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.

doforumda · wrote on 12 Oct 2010, 11:31

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

doforumda · wrote on 12 Oct 2010, 11:36

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

Dii · wrote on 12 Oct 2010, 11:37

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
?

Dii · wrote on 12 Oct 2010, 11:37

gosh... all with sudo please

doforumda · wrote on 12 Oct 2010, 11:42

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

@

doforumda · wrote on 12 Oct 2010, 11:42

@
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

@

doforumda · wrote on 12 Oct 2010, 11:44

@
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

@