Re: Implementing pg_dump_sort.c topological sorting in sql/plpgsql/plperl?

On Tue, Jan 04, 2011 at 09:29:55AM +0100, Joel Jacobson wrote:
> Hi hackers,
>
> The project I'm currently working with fsnapshot[1], is written in
> plain plpgsql and I need to sort all the oids in their
> creatable/droppable order. This has already been properly
> implemented in pg_dump_sort.c using Knuth's algorithm for
> topological sorting, with some special magic to find and break
> dependency loops.
>
> It's not possible to use a plain recursive query to do the trick
> (due to 'i' bidirectional dependencies and dependency loops).

I believe it is possible. I'll try to do it this evening.

Cheers,
David.
--
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