Re: Selectivity of "=" (Re: [HACKERS] Index not used on simple select)

> > Yes, I think we index nulls.  What are partial indexes?
> 
>   http://www.PostgreSQL.ORG/docs/postgres/partial-index.htm
> 
> Postgres had support for this at one time, and probably still does.
> 

Wow, that's really nice writing.  I think Tom Lane and I ripped that
stuff out of the optimizer.  (Only kidding.)

Not sure if any of it works.

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