rails query [3.2]

with 3 models : user has_many posts / user has_many comments
Using the new Active Record Query Interface , I am trying to write a
query involving 2 counts in the select method :
writing

      @search = User.joins(:posts).select("*, users.id as user_id,
COUNT(posts.id) as posted").uniq.group('users.id')
generates the SQL :
SELECT DISTINCT users.id as user_id, COUNT(posts.id) as posted FROM
`users` INNER JOIN `posts` ON `posts`.`user_id` = `users`.`id` GROUP
BY users.id;
which is fine. I get
user_id posted
1 9
2 1
3 3
4 14
5 17

I can also write a similar line to query the users.comments
( replacing posts by comments ...
@search = User.joins(:comments).select("*, users.id as user_id,
COUNT(comments.id) as commented").uniq.group('users.id')
which generates the SQL:
SELECT DISTINCT users.id as user_id, COUNT(comments.id) as commented
FROM `users` INNER JOIN `comments` ON `comments`.`user_id` =
`users`.`id` GROUP BY users.id;
also correct, and I get
user_id commented
1 42
2 40
3 40
4 32
5 30

I would like to have a single line to get both, posted and commented
counts, but if I write :
@search = User.joins(:posts, :comments).select("*, users.id as
user_id, COUNT(posts.id) as posted, COUNT(comments.id) as
commented").uniq.group('users.id') , this generates the SQL:
SELECT DISTINCT users.id as user_id, COUNT(IF(comments.user_id =
users.id, 1, NULL)) as commented FROM `users` INNER JOIN `comments` ON
`comments`.`user_id` = `users`.`id` GROUP BY users.id;
user_id posted commented
and I get with :
user_id posted commented
1 378 378
2 40 40
3 120 120
4 448 448
5 510 510

which is the combined number of records : posted * commented ....
and not
user_id posted commented
1 9 42
2 1 40
3 3 40
4 14 32
5 17 30

where am I wrong ? thanks for feedback

[SOLVED] after many sql tests in console .. I got :

SELECT DISTINCT users.id as user_id, COUNT(DISTINCT posts.id) as
posted, COUNT(DISTINCT comments.id) as commented FROM `users` INNER
JOIN `posts` ON `posts`.`user_id` = `users`.`id` INNER JOIN `comments`
ON `comments`.`user_id` = `users`.`id` GROUP BY users.id ORDER BY
`users`.`id` ASC;

now need to write it as a Rails query.... I guess a scope will be
appropriate

Hi Erwin,

I'm sorry I didn't see your first post.

<snip>

I would like to have a single line to get both, posted and commented
counts

<snip>

where am I wrong ? thanks for feedback

Why do you want to count 2 separate / independent resources in one SQL
statement? I'd bet a nickel that it's going to be less efficient from
a processing perspective, and it's certainly less readable than:

users = User.includes(:posts, :comments)
users.each do |u|
  puts u.id.to_s + u.posts.size.to_s + u.comments.size.to_s
end

Best regards,
Bill