Try 1) create table c as select a,b as b1,b as b2 ... from a 2) drop a; 3) alter table c rename to a;
Instead of 2) you can rename the table and drop later, or tar-up the .MYI,.MYD and .frm files for the table before doing the above. Regards, Dan > -----Original Message----- > From: Keith A. Calaman [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, 13 February 2002 5:08 a.m. > To: Max Mouse; [EMAIL PROTECTED] > Subject: RE: Columns > > > Sounds like an UPDATE: > > http://www.mysql.com/doc/U/P/UPDATE.html > > UPDATE TABLE > SET columnname1 = columnname2 > where KEY = KEY > > Something like that probably. If it was me I would copy the > whole table so > I had a backup...UPDATES and DELETES can be destructive if writting > improperly (*_*) > > -----Original Message----- > From: Max Mouse [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, February 06, 2002 4:11 PM > To: [EMAIL PROTECTED] > Subject: Columns > > > Hey all, > > Is it possible to copy the contents of one column to another column using > mySQL? I just > changed my table structure by adding a few more columns and I need to be > able to move the data from the original column to 4 new columns and then > drop the orginial. I know that the proper query for sql is that I > added with > ALTER and remove with DROP. But I can't find anything that would > allow me to > move the data from one column to another. Anything I can do? > > Max > > > > --------------------------------------------------------------------- > 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 > > > --------------------------------------------------------------------- > 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
