Re: why it doesn't work? referential integrity

2007/8/11, Gregory Stark <stark(at)enterprisedb(dot)com>:
>
> "Pavel Stehule" <pavel(dot)stehule(at)gmail(dot)com> writes:
>
> > checked_by INT REFERENCES users (id) ON UPDATE CASCADE ON DELETE SET NULL,
>
> > CONTEXT: SQL statement "UPDATE ONLY "public"."tasks" SET "worker" =
> > NULL WHERE $1 OPERATOR(pg_catalog.=) "worker""
>
> This says you mistyped the constraint above to refer to tasks(worker) instead
> of users(id). Did you?
>
> --

Im sorry. I don't understand. It's look like wrong evaluation order:

1. delete from users
2. update tab set col = NULL

insead

1. update ... -- remove references
2. delete from users ...

Pavel Stehule

> Gregory Stark
> EnterpriseDB http://www.enterprisedb.com
>
>