Re: query from two tables & concat the result

On 03/02/2016 13:57, arnaud gaboury wrote:
> On Wed, Feb 3, 2016 at 2:19 PM, Raymond O'Donnell <rod(at)iol(dot)ie> wrote:
>> On 03/02/2016 13:11, arnaud gaboury wrote:
>>
>>> Hum hum...
>>> ------------------------------------------------------
>>> SELECT u.username ||'@'||d.domain as email_address
>>> FROM email.mailusers u
>>> INNER JOIN
>>> email.domain d
>>> ON
>>> (u.domain_id=d.domain.id)
>>> WHERE id=1;
>>>
>>> ERROR: missing FROM-clause entry for table "domain"
>>> LINE 6: (u.domain_id=d.domain.id)
>>> --------------------------------------------------------------
>>>
>>> What did I wrong following your solution?
>>
>> In the join condition, replace "d.domain.id" with "d.id" (partly my
>> mistake, I missed that the column is called "id" and not "domain_id" in
>> the domains table).
>>
>> Ray.
>
> I noticed your mistake but made a wrong change myself :-(
> Now working perfectly:
>
> thetradinghall=> SELECT u.username ||'@'||d.domain as email_address
> FROM email.mailusers u
> INNER JOIN
> email.domainlist d
> ON
> (u.domain_id=d.id);
>
> email_address
> -----------------------------------
> arnaud(dot)gaboury(at)thetradinghall(dot)com
> (1 row)
> -------------------------------------
>
> As for the cleaning of ID, I dropped id and changed both primary keys.
> Thank you so much for your prompt answer and help.

You're very welcome - glad to be able to help.

R.

--
Raymond O'Donnell :: Galway :: Ireland
rod(at)iol(dot)ie