Re: Adding OU with PSQL backend

[Howard Chu <hyc@symas.com>]

Dieter Kluenter wrote:
> Michael Ströder<michael@stroeder.com>  writes:
>
> > Dieter Kluenter wrote:
> > > Marcel Berteler<marcel.berteler@bdsolutions.co.za>  writes:
> > >
> > > > Dieter Kluenter wrote the following on 2009/04/21 13:35:
> > > > > Marcel Berteler<marcel.berteler@bdsolutions.co.za>  writes:
> [...]
> > > Just a few lines down, section 4.2.16 and 4.2.17
> > > an equality index should be sufficient.
> >
> > Server-side database indexing is implementation-specific and therefore
> > RFC 4517 does not say anything about indexing.
> >
> > For indexing searches with<= or>= IMHO kind of an ordering index would
> > be needed for the ORDERING matching rule. Maybe one of the developers
> > could elaborate on how ordering matching works within slapd and whether
> > an equality index already speeds up this. When doing it with back-sql
> > probably the PostgresQL indexing configuration is relevant either.
>
> A 'greater than or equal to', or 'less than or equal to' filter in
> fact is operated on an equality index database.

That's true in back-bdb/hdb. For back-sql, everything depends on the 
underlying SQL database.

--
  -- Howard Chu
  CTO, Symas Corp.           http://www.symas.com
  Director, Highland Sun     http://highlandsun.com/hyc/
  Chief Architect, OpenLDAP  http://www.openldap.org/project/