Re: adding columns to a large table
At 12:53 PM 9/25/2006, Helen M Hudson wrote: I have a table with about 3million rows and I'm having trouble altering it to add 4 more columns. I'm using the MySQL Administrator and I've left it more than 24hours and its still not finished. I was going to try using a login to the console next, but is there a better way? Any advice much appreciated! Helen -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED] Hi Helen, I would like to know what type of engine your using in mysql? Is it mysisam or innodb? thank you, Ehrwin C. Mina -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
RE: adding columns to a large table
If you have enough disk space, create a temporary table with the four new columns. Insert into this table selecting records from the original table. Finally rename the tables. Hope this helps. Regards, S.Mugunthan -Original Message- From: Ehrwin Mina [mailto:[EMAIL PROTECTED] Sent: Monday, September 25, 2006 12:35 PM To: Helen M Hudson; MySQL List Subject: Re: adding columns to a large table At 12:53 PM 9/25/2006, Helen M Hudson wrote: I have a table with about 3million rows and I'm having trouble altering it to add 4 more columns. I'm using the MySQL Administrator and I've left it more than 24hours and its still not finished. I was going to try using a login to the console next, but is there a better way? Any advice much appreciated! Helen -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED] Hi Helen, I would like to know what type of engine your using in mysql? Is it mysisam or innodb? thank you, Ehrwin C. Mina -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED] ** DISCLAIMER ** Information contained and transmitted by this E-MAIL is proprietary to Sify Limited and is intended for use only by the individual or entity to which it is addressed, and may contain information that is privileged, confidential or exempt from disclosure under applicable law. If this is a forwarded message, the content of this E-MAIL may not have been sent with the authority of the Company. If you are not the intended recipient, an agent of the intended recipient or a person responsible for delivering the information to the named recipient, you are notified that any use, distribution, transmission, printing, copying or dissemination of this information in any way or in any manner is strictly prohibited. If you have received this communication in error, please delete this mail notify us immediately at [EMAIL PROTECTED] Watch the latest updates on Mumbai, with video coverage of news, events, Bollywood, live darshan from Siddhivinayak temple and more, only on www.mumbailive.in Watch the hottest videos from Bollywood, Fashion, News and more only on www.sifymax.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
RE: adding columns to a large table
On Mon, 2006-09-25 at 15:27 +0530, Mugunthan SIFY wrote: If you have enough disk space, create a temporary table with the four new columns. Insert into this table selecting records from the original table. Finally rename the tables. isn't this resource intensive? Then again, since the OP did already wait 24 hours, that must've loaded the server as well. Hope this helps. Regards, S.Mugunthan -Original Message- From: Ehrwin Mina [mailto:[EMAIL PROTECTED] Sent: Monday, September 25, 2006 12:35 PM To: Helen M Hudson; MySQL List Subject: Re: adding columns to a large table At 12:53 PM 9/25/2006, Helen M Hudson wrote: I have a table with about 3million rows and I'm having trouble altering it to add 4 more columns. I'm using the MySQL Administrator and I've left it more than 24hours and its still not finished. I was going to try using a login to the console next, but is there a better way? Any advice much appreciated! Helen -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED] Hi Helen, I would like to know what type of engine your using in mysql? Is it mysisam or innodb? thank you, Ehrwin C. Mina -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED] ** DISCLAIMER ** Information contained and transmitted by this E-MAIL is proprietary to Sify Limited and is intended for use only by the individual or entity to which it is addressed, and may contain information that is privileged, confidential or exempt from disclosure under applicable law. If this is a forwarded message, the content of this E-MAIL may not have been sent with the authority of the Company. If you are not the intended recipient, an agent of the intended recipient or a person responsible for delivering the information to the named recipient, you are notified that any use, distribution, transmission, printing, copying or dissemination of this information in any way or in any manner is strictly prohibited. If you have received this communication in error, please delete this mail notify us immediately at [EMAIL PROTECTED] Watch the latest updates on Mumbai, with video coverage of news, events, Bollywood, live darshan from Siddhivinayak temple and more, only on www.mumbailive.in Watch the hottest videos from Bollywood, Fashion, News and more only on www.sifymax.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: adding columns to a large table
There must be some thing went wrong with your settings in my.cnf file.For an 3 million records 24 hrs is bad :( |myisam_sort_buffer_size value in my.cnf ? Also you can apporx check the status by doing file size check on the table in database dir and the temoprory table created in the data base dir . -- Praj |Helen M Hudson wrote: let you know shortly or I have a table with about 3million rows and I'm having trouble altering it to add 4 more columns. I'm using the MySQL Administrator and I've left it more than 24hours and its still not finished. I was going to try using a login to the console next, but is there a better way? Any advice much appreciated! Helen
Re: adding columns to a large table
Thanks for all the help on this one. Its a MyISAM table. I ended up creating a temp table and selecting the data in... took 2 mins. I feel totally blonde for not thinking of that earlier! Thanks for being there, everyone! Helen - Original Message - From: praj To: Helen M Hudson Cc: MySQL List Sent: Monday, September 25, 2006 1:23 PM Subject: Re: adding columns to a large table There must be some thing went wrong with your settings in my.cnf file.For an 3 million records 24 hrs is bad :( myisam_sort_buffer_size value in my.cnf ? Also you can apporx check the status by doing file size check on the table in database dir and the temoprory table created in the data base dir . -- Praj Helen M Hudson wrote: let you know shortly or I have a table with about 3million rows and I'm having trouble altering it to add 4 more columns. I'm using the MySQL Administrator and I've left it more than 24hours and its still not finished. I was going to try using a login to the console next, but is there a better way? Any advice much appreciated! Helen
