>>>I have PERSON and LICENSE. One person may have more than one license. One license may be issued to more than one person. Either the person or the license may be in both circumstances. That is, a person may be the only holder of one license and a shared holder of another license. Similarly, a license may be held by one person who may or may not hold another license, and those licenses may be single or shared as well.
>>>
>>>PERSON.pk_person is a primary key, and LICENSE.pk_license is primary
>>>pk_person = 'P00000' and pk_license = 'L00000' are in each table for a 'blank' person or license.
>>>
>>>I would appreciate your guidance on an SQL-SELECT statement that will make a join table for this, selecting the pk from each table where there are matches, and supplying the 'blank' to make a match where there are none.
>>>
>>>That is, if a PERSON.Pnnnnn does not have a license, he is still in the join table as JOINED.fk_person = PERSON.Pnnnnn with license JOINED.fk_license = 'L00000' Similarly, if a license is issued, but not to a person (e.g. a business) the license is still in the join table 'Lnnnnn' with person 'P00000'
>>>
>>>Thanks for any help
>>
>>

---

Sounds like :
>>

select * from Person ;
>> full join License ;
>>   on person.fk_person = license.pk_license

I got "person.fk_person" as foreign key linking to license (fk_person = "L00000" for pk_person = "P00000" and so on).
>>Cetin
>
>Thanks, Cetin,
>
>I think I said something wrong. person.pk_person never equals license.pk_license
>
>As an example, suppose I have
>
>P0
>P1
>P2
>P3
>P4
>P5
>
>and
>
>L0
>L1
>L2
>L3
>L4
>L5
>
>I want to build
> J0 P0 L0 - blanks join to satisfy RI
> J1 P1 L1 - P1 has two licenses, this one is not shared
> J2 P1 L2 - nor is this one
> J3 P2 L3 - P2 shares one with P3
> J4 P3 L3 - P3 shares with P2, and one of his own
> J5 P3 L4 - P3 shares with P4
> J6 P4 L4 - P4 share siwth P3
> J7 P5 L0 - P5 has no license (so is L0)
> J8 P0 L5 - L5 has no person (so is P0)
>
>The J values will be supplied by insert triggers when I append the result of this join onto the 'real' linker table
>
>Thanks again
>
>Al

---

Al,
I'm afraid I'm confused. There is one-to-many from both sides. In order to provide it I think you have other intermediate tables. Or do you have some self recursion (as natively supported in SQL server - like employee_id and reports_to who is another employee) ?
ie: How do you determine P3 has shares L3 and L4.
Cetin