Put together (Merge) two tables in one
Hello everyone, I have two tables each with 12K records, I need to merge them into one single table and also check for duplicates. I'm thinking in doing it with PHP and Mysql. My idea involves one SELECT query and almost 12K insert query. Is there a faster way of doing using only MySQL? Thanks in advance Regards - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
Anyone knows what's wrong with this INSERT sentence?
Hello all, I have this two tables : table1,table2 . I would like to include all emails from table2 into table1 removing duplicates. INSERT INTO table1 (email) SELECT email from table2 where table1.email table2.email; MYSQL says: ERROR 1109: Unknown table 'table1' in where clause Both tables exist, what's wrong? TIA Regards - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
Is it possible? ODBC doubt.
Hi there! I installed MyODBC and tried to import a Database from my Web Hosting account but didn't let me. Was it me that didn't know how to do it or is it possible that access is only allowed through local connection? TIA Regards - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
Re: saving database during os changeover
Hi Kris! mysqldump is your command Check this URL: http://www.faqts.com/knowledge_base/view.phtml/aid/1990 HTH Regards - Original Message - From: Kris Gonzalez [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, May 09, 2001 10:19 AM Subject: saving database during os changeover I'm going to be switching from my OS from Linux to Solaris and was wondering what steps I would need to take to save my tables during the OS conversion and restore them once it is complete. Is it as simple as tarballing the /var/lib/mysql directory and extracting it into the new OS, or is the procedure more complicated? Any insight you can provide would be much appreciated. Thanks in advance! -kg - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
Part two: Help restarting mysqld!! System crashes randomly :-(
Hello again! Thanks to everyone that helped me yesterday with the MySQL crash and how to restart the server. But now I have another problem, the MySQL 3.22.32 server is crashing every now and then. Looking at the .err file, it says 010420 1:48:51 Warning: setrlimit couldn't increase number of open files to more than 164 010420 1:48:51 Warning: Changed limits: max_connections: 30 table_cache: 62 Looking through Google.com I found this answer : * BEGINNING OF ANSWER Can someone explain what these 2 mysql errors are? I found them in an .err file in my mysql directory. I searched the Mysql website and looked through my book and couldn't find anything. They are kinda self explanatory, but why are they appearing? 000725 17:34:12 Warning: setrlimit couldn't increase number of open files to more than 164 000725 17:34:12 Warning: Changed limits: max_connections: 30 table_cache: 62 According to my O'Reilly book - mySQL and mSQL (page 63) You might need to increase the max_connections and table_cache settings when mySQL starts. * END OF ANSWER Is this right? Do I have to increase these values? How much? But the most important thing, in what file do I have to apply all these changes? An one last thing, I found these lines commented in safe_mysqld, The Site is running FreeBSD 4.2. Should I un-comment these lines? * LINES OF safe_mysqld * # Does this work on all systems? #if type ulimit | grep "shell builtin" /dev/null #then # ulimit -n 256 /dev/null 21 # Fix for BSD and FreeBSD systems #fi * END LINES OF safe_mysqld * Thanks again in advance, and sorry for the mail length. I'm just a little desperate with this :-) - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
Help restarting mysqld !!
Hello everyone! This is the first time I post here, so please bear with me. It all started when I deleted a whole table by mistake. So I try to recovered it by copying yesterday's backup. I had never done that before and it all worked wrong. I found out MySQL server had to be restarted in order to changes take effect. I kill mysqld daemon with a 'kill PID', but I didn't know how to restart it .I tried with a 'mysqld' but as soon as I close the Terminal Window, mysqld died. Then I tried with 'mysqld ' and it crashed after a while. Finally I found this nice little script below, I executed it but due to my ignorance I don't if what I did is right. Everything seems to be ok right now but I'm not sure if it's gonna crash in a while. Could you please take a look at it and tell me what you think. Thanks in advance Regards MySQL version: 3.22.32 OS: FreeBSD 4.2 *** Beginning of safe_mysqld #!/bin/sh # Copyright Abandoned 1996 TCX DataKonsult AB Monty Program KB Detron HB # This file is public domain and comes with NO WARRANTY of any kind # # scripts to start the MySQL daemon and restart it if it dies unexpectedly # # This should be executed in the MySQL base directory if you are using a # binary installation that has other paths than you are using. # # mysql.server works by first doing a cd to the base directory and from there # executing safe_mysqld trap '' 1 2 3 15 # we shouldn't let anyone kill us # Check if we are starting this relative (for the binary release) if test -d ./data/mysql -a -f ./share/mysql/english/errmsg.sys -a \ -x ./bin/mysqld then MY_BASEDIR_VERSION=`pwd` # Where bin, share and data are DATADIR=$MY_BASEDIR_VERSION/data # Where the databases are ledir=$MY_BASEDIR_VERSION/bin # Where mysqld is # Check if this is a 'moved install directory' elif test -f ./var/mysql/db.frm -a -f ./share/mysql/english/errmsg.sys -a \ -x ./libexec/mysqld then MY_BASEDIR_VERSION=`pwd` # Where libexec, share and var are DATADIR=$MY_BASEDIR_VERSION/var # Where the databases are ledir=$MY_BASEDIR_VERSION/libexec # Where mysqld is else MY_BASEDIR_VERSION=/usr/home/notodo/usr/local/mysql DATADIR=/usr/home/notodo/usr/local/mysql/var ledir=/usr/local/bin/ if test ! -x $ledir/mysqld then echo "The file $ledir/mysqld doesn't exist or is not executable" echo "Please do a cd to the mysql installation directory and restart" echo "this script from there as follows:" echo "./bin/safe_mysqld". exit 1; fi fi pid_file=$DATADIR/`/bin/hostname`.pid log=$DATADIR/`/bin/hostname`.log err_log=$DATADIR/`/bin/hostname`.err # Parse arguments to see if caller wants the pid_file somewhere else. for arg do case $arg in --pid-file=*) pid_file=`echo "$arg" | sed -e "s;--pid-file=;;"` ;; --datadir=*) DATADIR=`echo "$arg" | sed -e "s;--datadir=;;"` ;; esac done # # If there exists an old pid file, check if the daemon is already running # Note: The switches to 'ps' may depend on your operating system if test -f $pid_file then PID=`cat $pid_file` if /bin/kill -0 $PID then if /bin/ps p $PID | grep mysqld /dev/null then# The pid contains a mysqld process echo "A mysqld process already exists" echo "A mysqld process already exists at " `date` $err_log exit 1; fi fi rm -f $pid_file if test -f $pid_file then echo "Fatal error: Can't remove the pid file: $pid_file" echo "Fatal error: Can't remove the pid file: $pid_file at " `date` $err_log echo "Please remove it manually and start $0 again" echo "mysqld daemon not started" exit 1; fi fi # # Uncomment the following lines if you want all tables to be automaticly # checked and repaired at start # # echo "Checking tables in $DATADIR" # isamchk --silent --force $DATADIR/*.ISM echo "Starting mysqld daemon with databases from $DATADIR" #Default communication ports #MYSQL_TCP_PORT=3306 if test -z "$MYSQL_UNIX_PORT" then MYSQL_UNIX_PORT="/tmp/mysql.sock" export MYSQL_UNIX_PORT fi #export MYSQL_TCP_PORT # Does this work on all systems? #if type ulimit | grep "shell builtin" /dev/null #then # ulimit -n 256 /dev/null 21 # Fix for BSD and FreeBSD systems #fi echo "mysqld started on " `date` $err_log while true do rm -f $MYSQL_UNIX_PORT $pid_file # Some extra safety if test "$#" -eq 0 then nohup $ledir/mysqld --basedir=$MY_BASEDIR_VERSION --datadir=$DATADIR \ $err_log 21 else nohup $ledir/mysqld --basedir=$MY_BASEDIR_VERSION --datadir=$DATADIR \ "$@" $err_log 21 fi if test ! -f $pid_file # This is removed if normal shutdown then break; fi if false then # Test if one process was hanging. # This is only a fix for Linux (running as base 3 mysqld processes) # but should work for the rest of the servers. # The only thing is ps x = redhat 5 gives warnings when using ps -x. # kill -9 is used or
