ALTER IGNORE TABLE mytable ADD UNIQUE (email);
will both add a unique key ( which will avoide this problem in the
future ) and delete the duplicates.
Rory O'Connor wrote:
> excuse me if this is too newbie...but I need to perform a duplicate
> delete on my database using the e-mail address as the key. I understnad
> how to use COUNT and DISTINCT together...
>
> select count(DISTINCT email) FROM table;
>
> but I can't seem to find any info on how to perform the actual deletion
> of the duplicate records. Any info is appreciated!
>
> Thanks!
>
>
>
> providing the finest in midget technology
>
> ---------------------------------------------------------------------
> 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
--
Gerald L. Clark
[EMAIL PROTECTED]
---------------------------------------------------------------------
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
