Re: [HACKERS] pg_depend

[Hiroshi Inoue]

Bruce Momjian wrote:
> 
> > I like
> >       object relid
> >       object oid
> >       object name
> >       reference relid
> >       reference oid
> 
> Can I ask why you like the object name?
> 

Oops I made a mistake.
Reference name is needed not an object name,
i.e
        object relid
        object oid
        relerence relid
        reference oid
        reference name

 create table a (...);
 create view view_a as select .. from a;

Then we have an pg_depend entry e.g.

        pg_class_relid
        oid of the view_a
        pg_class_relid
        oid of the table a
        'a' the name of the table

and so on.

 drop table a; (unadorned drop).

Then the above entry would be changed to

        pg_class_relid(unchanged)
        oid of the view_s(unchagned)
        pg_class_relid(unchanged)
        InvalidOid
        'a' the name of the table(unchanged)

 create table a (...);

Then the pg_depend entry would be

        pg_class_relid(unchanged)
        oid of the view_s(unchagned)
        pg_class_relid(unchanged)
        the oid of the new table a
        'a' the name of the table(unchanged)

regards,
Hiroshi Inoue

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