Re: ORA-02298: How do I find rows that do not join ?

You can use the exception table:
1) create the constraint with the disable clause: alter table ... add constraint ... foreing key (...) references ... disable; 2) create an exception table using utlexcpt.sql in your rdbms/admin directory
3) enabling the constraint:
alter table ... enable constraint ... exceptions into exceptions; 4) then the table exceptions contains the rowid of orphan rows.

--
Have a nice day
Michel

rockcogar <rock_cogarNOroSPAM_at_my-deja.com.invalid> a écrit dans le message : 2a9003b0.058ff07c_at_usw-ex0103-019.remarq.com...
> Hi,
>
> I just got a
>
> ORA-02298: cannot validate (schema.fk) - parent keys not found
>
> error when I try to create a foreign key.
>
> These orphaned records are common enough and usually easy to
> find and fix in DBs that come out of Access 97/Excel/whatever
> from questionable sources. What makes this one so difficult is
> that the table has nearly a million rows and the primary key of
> the parent table is made up out of 8 columns !
>
> QUESTION: Does anyone out there know a technique to find the
> orphans in foreign key creations where the keys are multi-column
> and the rowcount is very large ?
>
> Thanks,
> Rock.
>
>
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Received on Wed Feb 09 2000 - 03:04:20 CST