Re: A join of 2 tables with sum(column) > 30

On Mar 16, 2011, at 3:12 AM, Alexander Farber wrote:

> Unfortunately I get:
>
> # select u.id, u.first_name, sum(m.completed) from pref_users u,
> pref_match m where u.id=m.id and u.id like 'DE%' and sum(m.completed)
>> 30 group by u.id, u.first_name order by sum desc limit 3;
> ERROR: aggregates not allowed in WHERE clause
> LINE 1: ...f_match m where u.id=m.id and u.id like 'DE%' and sum(m.comp...
>

My Bad... Missed you have to use having clause as given below:
select u.id, u.first_name, sum(m.completed) from pref_users u, pref_match m where u.id=m.id and u.id like 'DE%' group by u.id, u.first_name having sum(m.completed > 30 order by sum desc limit 3;

>
> On Tue, Mar 15, 2011 at 10:43 PM, Vibhor Kumar
> <vibhor(dot)kumar(at)enterprisedb(dot)com> wrote:
>>
>> On Mar 16, 2011, at 3:03 AM, Alexander Farber wrote:
>>
>>> # select u.id, u.first_name, sum(m.completed)
>>> from pref_users u, pref_match m
>>> where u.id=m.id and u.id like 'DE%' and
>>> sum > 30 group by u.id, u.first_name
>>> order by sum desc limit 3;
>>>
>>> ERROR: column "sum" does not exist
>>> LINE 4: ...f_match m where u.id=m.id and u.id like 'DE%' and sum > 30 g...
>>>
>>> Any suggestions please? I've tried "... sum(m.completed) as total" too..
>>
>>
>> Try following:
>> select u.id, u.first_name, sum(m.completed) from pref_users u, pref_match m where u.id=m.id and u.id like 'DE%' and sum(m.completed > 30 group by u.id, u.first_name order by sum desc limit 3;
>>
>
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Thanks & Regards,
Vibhor Kumar
EnterpriseDB Corporation
The Enterprise PostgreSQL Company
vibhor(dot)kumar(at)enterprisedb(dot)com
Blog:http://vibhork.blogspot.com