Re: BUG #1740: Deferred foreign key constraint isn't deferred

On Thu, 30 Jun 2005, Daniel Cristian Cruz wrote:

> ALTER TABLE ONLY mat_comissao_itens
>     ADD CONSTRAINT mat_nf_saida_itens_pa_mat_comissao_itens FOREIGN KEY
> (mat_nfs_diretorio, mat_nfs_in_codigo, mat_nsi_in_ordem) REFERENCES
> mat_nf_saida_itens(mat_nfs_diretorio, mat_nfs_in_codigo, mat_nsi_in_ordem)
> ON UPDATE RESTRICT ON DELETE RESTRICT DEFERRABLE INITIALLY DEFERRED;
>
> BEGIN;
> DELETE FROM mat_nf_saida_itens WHERE mat_nsi_in_ordem = 2;
> UPDATE mat_comissao_itens SET mat_nsi_in_ordem = 1 WHERE mat_nsi_in_ordem =
> 2;
> COMMIT;

Referential actions are immediate (they're defined as actions that happen
upon the occurrance), it's the constraint checks that are deferrable with
the deferrable/initially deferred.