Re: Flaw in dbschema
Posted in 2007
Thanks guys. I understand now. I didn't realise that those were
internally created by informix.
On Jun 19, 9:04 am, "Art S. Kagel" <art.ka...@gmail.com> wrote:
> On Jun 19, 10:46 am, mohitanch...@gmail.com wrote:
>
>
>
>
>
> > I think I didn't explain properly,
>
> > when I do "select count(*) from sysindexes where owner = "abcd" gives
> > higher count than
> > when I dodbschema-d DB and take count for indexes of owner abcd.
> > Those index names that don't show up are not part ofdbschemastarts
> > with numeric. Is there a flaw or is there a way to get it using
> >dbschema?
>
> > On Jun 18, 5:55 pm, "Jack Parker" <jack.park...@verizon.net> wrote:
>
> > > Generated indices for constraints are numbered and will not show up indbschemaoutput as 'create index'. Instead they will show up as
> > > constraints. Genrally their names start with space, followed by tabid,
> > > underscore, and I forget the rest.
>
> > > j.
>
> > > -----Original Message-----
> > > From: informix-list-boun...@iiug.org
> > > [mailto:informix-list-boun...@iiug.org]On Behalf Of
> > > mohitanch...@gmail.com
> > > Sent: Monday, June 18, 2007 8:26 PM
> > > To: informix-l...@iiug.org
> > > Subject:Flawindbschema
>
> > > I don't know why but when I count number of indexes generated bydbschemafor specific "database and owner" is different than the
> > > number I get when I look at sysindexes table for specific "database
> > > and owner".
>
> > > All I can tell is they are 3 idexes off and all 3 indexes name that
> > > wasn't generated bydbschemastarts with number.
>
> > > Could you please tell me why or how can I get these indexes.
>
> Did you READ Jack's answer? Dbschemawill NOT report on implicitly
> created indexes that were created as the result of creating
> a primary key, foreign key, or unique constraint. If you just want to
> have the counts match add "AND idxname NOT MATCHES ' *'"
> to your catalog query. If you want to know what those indexes are you
> have two choices:
>
> 1) Look at the constraints on the table indbschema... -ss and any
> constraints that do not have a matching index explicitly created
> DO have an implicit index on the same columns as the constraint,
> UNIQUE for primary key and unique constraints, non-unique for
> foreign key constraints.
>
> 2) Get mydbschemareplacement utility, myschema, which DOES print out
> the definitions of implied indexes, giving them names
> that are readable (ie do not start with an embedded space). Myschema
> is included in the package utils2_ak available for download
> from the IIUG Software Repository.
>
> Art S. Kagel- Hide quoted text -
>
> - Show quoted text -