Changing datatypes
Can I change the data type of a column in a table from varchar(10) to smallint(5) unsigned zerofill. The column that is set to varchar(10) is populated with values from a primary key column in another table that has a datatype smallint(5) unsigned zerofill and I need to make them both the same. I administer my MySQL database from the command line and just need to know the syntax for changing data types. Also, can I do this without affecting the data that is currently in the varchar(10) column (this data has came from a column of the data type that I wish to change to)? This e-mail is intended for the recipient only and may contain confidential information. If you are not the intended recipient then you should reply to the sender and take no further ation based upon the content of the message. Internet e-mails are not necessarily secure and CCM Limited does not accept any responsibility for changes made to this message. Although checks have been made to ensure this message and any attchments are free from viruses the recipient should ensure that this is the case. - 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: Changing datatypes
Mark, Thursday, September 19, 2002, 12:24:45 PM, you wrote: MC Can I change the data type of a column in a table from varchar(10) to MC smallint(5) unsigned zerofill. The column that is set to varchar(10) is MC populated with values from a primary key column in another table that has a MC datatype smallint(5) unsigned zerofill and I need to make them both the MC same. I administer my MySQL database from the command line and just need to MC know MC the syntax for changing data types. Also, can I do this without affecting MC the data that is currently in the varchar(10) column (this data has came MC from a column of the data type that I wish to change to)? Yes, you can do it with ALTER TABLE .. MODIFY .. . If varchar(10) column contains allowable values for SMALLINT(5) UNSIGNED ZEROFILL, there shoudn't be a problem: http://www.mysql.com/doc/en/ALTER_TABLE.html -- For technical support contracts, goto https://order.mysql.com/?ref=ensita This email is sponsored by Ensita.net http://www.ensita.net/ __ ___ ___ __ / |/ /_ __/ __/ __ \/ /Egor Egorov / /|_/ / // /\ \/ /_/ / /__ [EMAIL PROTECTED] /_/ /_/\_, /___/\___\_\___/ MySQL AB / Ensita.net ___/ www.mysql.com - 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: Changing datatypes on the fly?
At 02:59 PM 3/9/2002, you wrote: I have a column defined as varchar(255) in my MySql-database. Now I realized that there's not enough room for my inserts. Is there any chance to change it's datatype to tinytext without making an entirely new database and inserting data from the old one to it? -Jarkko Jarkko, If you want something easier than ALTER TABLE, try MySQL Front, a MySQL GUI from http://www.anse.de/mysqlfront/. It's free and you're less likely to shoot yourself in the foot with it.g Brent _ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com - 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
Changing datatypes on the fly?
I have a column defined as varchar(255) in my MySql-database. Now I realized that there's not enough room for my inserts. Is there any chance to change it's datatype to tinytext without making an entirely new database and inserting data from the old one to it? -Jarkko _ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp. - 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: Changing datatypes on the fly?
On Sat, Mar 09, 2002 at 10:59:52PM +0200, Jarkko Toivonen wrote: I have a column defined as varchar(255) in my MySql-database. Now I realized that there's not enough room for my inserts. Is there any chance to change it's datatype to tinytext without making an entirely new database and inserting data from the old one to it? Sure, just use ALTER TABLE as described in the manual. Jeremy -- Jeremy D. Zawodny, [EMAIL PROTECTED] Technical Yahoo - Yahoo Finance Desk: (408) 349-7878 Fax: (408) 349-5454 Cell: (408) 685-5936 MySQL 3.23.47-max: up 30 days, processed 1,025,822,488 queries (391/sec. avg) - 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
