[erlang-questions] Index Overhead In Mnesia
Wed Jun 11 09:03:36 CEST 2008
On Tue, Jun 10, 2008 at 9:44 PM, Ben Hood <> wrote:
> > I guess it is in the same category as repeated queue scanning for
> > receive - easy to workaround in most cases, so no major incentive to
> > the behaviour.
> So you're saying that one should decompose the duplicates into another
> table that just contains a canonical representation of each unique
> combination and just reference these from the original table?
or don't use index if cardinality of element is far less than cardinality of
table. Index is useless in this case anyway.
--Hynek (Pichi) Vychodil
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