Re: Help me with this multi-table query

In response to Nilesh Govindarajan :
> Hi,
>
> I want to find out the userid, nodecount and comment count of the userid.
>
> I'm going wrong somewhere.
>
> Check my SQL Code-

Check my example:

test=*# select * from u;
id
----
1
2
3
(3 rows)

test=*# select * from n;
uid
-----
1
1
1
2
2
3
(6 rows)

test=*# select * from c;
uid
-----
1
2
2
3
3
3
(6 rows)

test=*# select foo.id, foo.n_count, count(c) from (select u.id, count(n)
as n_count from u right join n on (n.uid=u.id) group by 1) foo left join
c on foo.id=c.uid group by id, n_count;
id | n_count | count
----+---------+-------
1 | 3 | 1
2 | 2 | 2
3 | 1 | 3
(3 rows)

Andreas
--
Andreas Kretschmer
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