Re: Constraint question

On Sun, May 14, 2006 at 10:50:50PM -0400, Tom Lane wrote:
> Enzo Daddario <enzo@pienetworks.com> writes:
> > I am now required the remove thousands of obsolete records from table
> > "X" and even though I have removed all related rows in all related
> > tables, the deletion of rows in table "X" is taking WAY TOO LONG.
>
> You need to put indexes on the referencing columns.  Then start a fresh
> session for doing the actual deletes (FK check plans are usually cached
> per-session).

Would SET CONSTRAINTS ... DEFERRED not help, or does it still use the
same machinery to do the checking, regardless of how much data there is
to check?
--
Jim C. Nasby, Sr. Engineering Consultant      jnasby@pervasive.com
Pervasive Software      http://pervasive.com    work: 512-231-6117
vcard: http://jim.nasby.net/pervasive.vcf       cell: 512-569-9461