Hello.

It's maybe not such a CakePHP question, but rather regarding a rather
complex (for me) SQL query.

I have a table storing e-mail addresses to which has been sent an
invite to a website:

CREATE TABLE IF NOT EXISTS `recomm_emails` (
  `id` mediumint(7) unsigned NOT NULL AUTO_INCREMENT,
  `user_id` smallint(5) unsigned NOT NULL,
  `email` varchar(100) NOT NULL,
  `registered` tinyint(1) NOT NULL DEFAULT '0',
  `active` tinyint(1) NOT NULL DEFAULT '0',
  `created` date NOT NULL,
  PRIMARY KEY (`id`)
)

'user_id' is the ID of registered user, who has sent an invitation to
given e-mail address.
The 'registered' field means that user who got the invitation has
registered in website. The 'acitve' field holds the information if
invited user has activated his account after registration.

The problem is, I have to create a statistics of invitations. List
should be divided into pages and should contain:
- User.id and User.login_name (both from users table),
- total number of all invited users,
- number of users who registered and activated account (registered=1
and active=1),
- number of users who registered but didn't activate the account
(registered=1 and active=0)
-  number of users who didn't register at all (registered=0).
I need this kind of list, because it will have to be also ordered by
selected parameters (chosen from 4 numbers above). So everything must
be in one query.

How to write such a query? I can't come up with solution for a long
time! Please help!:)

I first came up to an idea to do it by PHP, but it is not a very nice
solution, because on one page I shall present about 30 records, and
there is no point to get data from whole the users table (which can
have let's say couple tousend of records).


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