Hello ,
Another one alternate solution without join
SELECT id,count(email) as No ,email FROM email GROUP BY email having count(email)>1
Thanks
Visolve DB Team.
----- Original Message -----
From: Peter Brawley
To: Chris W
Cc: MYSQL General List
Sent: Thursday, August 31, 2006 3:02 AM
Subject: Re: Group By question
Chris,
>I would like to query all rows that have more
>than one person with the same email address.
select id,count(emailaddr) as howmany
from tbl t1 join tbl t2 using(emailaddr)
group by id
having howmany>1;
PB
-----
Chris W wrote:
I have a table of people with one of the fields being the email address. I would like
to query all rows that have more than one person with the same email address. For
example if the data were like this...
A 123@stripped
B 456@stripped
C 984@stripped
D 123@stripped
E 456@stripped
F 321@stripped
The query would return row A, D, B, and E, in that order. It would not return C or F
------------------------------------------------------------------------------
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.1.405 / Virus Database: 268.11.7/433 - Release Date: 8/30/2006
------------------------------------------------------------------------------
--
MySQL General Mailing List
For list archives: http://lists.mysql.com/mysql
To unsubscribe: http://lists.mysql.com/mysql?unsub=1
