Hi,

I want to do a join for 4 tables on field "id" and "type" but I only
want to have "id" and "type" shown once, then have all the other
fields, that are unique in the table, also shown. Something like:

select // id and type once, then all fields
from table_11 t1, table_12 t2, table_21 t3, table_22 t4
where t1.id=t2.id and
t2.id=t3.id and
t3.id=t4.id and
t1.type=t2.type and
t2.type=t3.type and
t3.type=t4.type limit 5

Any ideas?

Cheers

On Sat, 19 Apr 2008 12:34:12 +0200, avilella <avilella@gmail.com> wrote:

> Hi,
>
> I want to do a join for 4 tables on field "id" and "type" but I only
> want to have "id" and "type" shown once, then have all the other
> fields, that are unique in the table, also shown. Something like:
>
> select // id and type once, then all fields
> from table_11 t1, table_12 t2, table_21 t3, table_22 t4
> where t1.id=t2.id and
> t2.id=t3.id and
> t3.id=t4.id and
> t1.type=t2.type and
> t2.type=t3.type and
> t3.type=t4.type limit 5
>
> Any ideas?

Just name them explicitly?
--
Rik Wasmus

Rik Wasmus wrote:
> On Sat, 19 Apr 2008 12:34:12 +0200, avilella <avilella@gmail.com>
> wrote:
>> Hi,
>>
>> I want to do a join for 4 tables on field "id" and "type" but I only
>> want to have "id" and "type" shown once, then have all the other
>> fields, that are unique in the table, also shown. Something like:
>>
>> select // id and type once, then all fields
>> from table_11 t1, table_12 t2, table_21 t3, table_22 t4
>> where t1.id=t2.id and
>> t2.id=t3.id and
>> t3.id=t4.id and
>> t1.type=t2.type and
>> t2.type=t3.type and
>> t3.type=t4.type limit 5
>>
>> Any ideas?
>
> Just name them explicitly?

As Rik said and use explicit JOINs for clarity and reliability

Rik Wasmus wrote:
> On Sat, 19 Apr 2008 12:34:12 +0200, avilella <avilella@gmail.com> wrote:
>
>> Hi,
>>
>> I want to do a join for 4 tables on field "id" and "type" but I only
>> want to have "id" and "type" shown once, then have all the other
>> fields, that are unique in the table, also shown. Something like:
>>
>> select // id and type once, then all fields
>> from table_11 t1, table_12 t2, table_21 t3, table_22 t4
>> where t1.id=t2.id and
>> t2.id=t3.id and
>> t3.id=t4.id and
>> t1.type=t2.type and
>> t2.type=t3.type and
>> t3.type=t4.type limit 5
>>
>> Any ideas?
>
> Just name them explicitly?

Which is a good practice, anyway.

--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attglobal.net
==================