Re: table optimisation
Hello. It depends on the table's type. For MyISAM see: http://dev.mysql.com/doc/mysql/en/optimize-table.html For InnoDB: http://dev.mysql.com/doc/mysql/en/innodb-file-defragmenting.html Seena Blace <[EMAIL PROTECTED]> wrote: > [-- text/plain, encoding 7bit, charset: us-ascii, 9 lines --] > > Hi, > I have been noticing table performanace issue when # of rows grows more.How > to tune that table? > thanks > -Seena > > > - > Do you Yahoo!? > Read only the mail you want - Yahoo! Mail SpamGuard. -- For technical support contracts, goto https://order.mysql.com/?ref=ensita This email is sponsored by Ensita.NET http://www.ensita.net/ __ ___ ___ __ / |/ /_ __/ __/ __ \/ /Gleb Paharenko / /|_/ / // /\ \/ /_/ / /__ [EMAIL PROTECTED] /_/ /_/\_, /___/\___\_\___/ MySQL AB / Ensita.NET <___/ www.mysql.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: table optimisation
Seena, >How to check whae are tables are having how many >indexes on which columns ? http://dev.mysql.com/doc/mysql/en/show-index.html and alternatively if you're using 5.03 or later, http://dev.mysql.com/doc/mysql/en/statistics-table.html eg an approximate equivalent of SHOW KEYS FROM tbl [FROM db] would be SELECT * FROM information_schema.statistics WHERE table_name='tbl' [AND table_schema = 'db'] PB - Seena Blace wrote: How to check whae are tables are having how many indexes on which columns ? Thomas Sundberg <[EMAIL PROTECTED]> wrote: -Original Message- From: Seena Blace [mailto:[EMAIL PROTECTED]] Sent: den 11 maj 2005 23:58 To: mysql@lists.mysql.com Subject: table optimisation Hi, I have been noticing table performanace issue when # of rows grows more.How to tune that table? Adding index on the column or columns that are often used in queries could be a start. Performing full table scan on large, unindexed tables can take quite longtime when the number of rows are increasing. /Thomas - Yahoo! Mail Stay connected, organized, and protected. Take the tour No virus found in this incoming message. Checked by AVG Anti-Virus. Version: 7.0.308 / Virus Database: 266.11.8 - Release Date: 5/10/2005 No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.308 / Virus Database: 266.11.8 - Release Date: 5/10/2005 -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
RE: table optimisation
How to check whae are tables are having how many indexes on which columns ? Thomas Sundberg <[EMAIL PROTECTED]> wrote: > -Original Message- > From: Seena Blace [mailto:[EMAIL PROTECTED] > Sent: den 11 maj 2005 23:58 > To: mysql@lists.mysql.com > Subject: table optimisation > > Hi, > I have been noticing table performanace issue when # of rows > grows more.How to tune that table? Adding index on the column or columns that are often used in queries could be a start. Performing full table scan on large, unindexed tables can take quite longtime when the number of rows are increasing. /Thomas - Yahoo! Mail Stay connected, organized, and protected. Take the tour
RE: table optimisation
> -Original Message- > From: Seena Blace [mailto:[EMAIL PROTECTED] > Sent: den 11 maj 2005 23:58 > To: mysql@lists.mysql.com > Subject: table optimisation > > Hi, > I have been noticing table performanace issue when # of rows > grows more.How to tune that table? Adding index on the column or columns that are often used in queries could be a start. Performing full table scan on large, unindexed tables can take quite longtime when the number of rows are increasing. /Thomas -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
