David, > I don't have a good example, but suppose I have a few tables with some > fields each and I realize that I should make a new table with data from > some columns of some tables. What to do?
Do you want to CREATE TABLE tbl_new SELECT (col1, col2, ...) FROM tbl_old? Or do I miss something which would make it a more complicated task? If you don't want all rows from the source table you can use WHERE and/or LIMIT. Regards, -- Stefan Hinz <[EMAIL PROTECTED]> Geschäftsführer / CEO iConnect GmbH <http://iConnect.de> Heesestr. 6, 12169 Berlin (Germany) Tel: +49 30 7970948-0 Fax: +49 30 7970948-3 ----- Original Message ----- From: "David T-G" <[EMAIL PROTECTED]> To: "mysql users" <[EMAIL PROTECTED]> Sent: Saturday, December 28, 2002 2:37 AM Subject: altering data structure > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Hi, all -- > > What's the best way to change your database schema around if you have > data in it? How do you know when to simply ALTER TABLE and when to dump > the whole thing (perhaps doing specific SELECTs to spit out the data > you'd like to have in the end to be processed by some script that will > make the new table structure)? > > I don't have a good example, but suppose I have a few tables with some > fields each and I realize that I should make a new table with data from > some columns of some tables. What to do? > > > TIA & HAND & Happy Holidays > > mysql query, > :-D > - -- > David T-G * There is too much animal courage in > (play) [EMAIL PROTECTED] * society and not sufficient moral courage. > (work) [EMAIL PROTECTED] -- Mary Baker Eddy, "Science and Health" > http://www.justpickone.org/davidtg/ Shpx gur Pbzzhavpngvbaf Qrprapl Npg! > > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.0.7 (FreeBSD) > > iD8DBQE+DQB2Gb7uCXufRwARAoiYAJ9ImPYzudn5iVy6a2VaxF9hZpT0QQCgm5A8 > V9U37FV1f/Xk6VVRbPa8A9I= > =XKu3 > -----END PGP SIGNATURE----- > > --------------------------------------------------------------------- > 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
