Re: [HACKERS] Re: [GENERAL] Update of bitmask type

On Tue, 21 Sep 1999, Bruce Momjian wrote:

> Can I get comments on this?  Is a bit type something we want installed
> by default, or in contrib?  Seems to me it should be in the main tree.

first...what is a bitmask type? :)

> > Hi,
> > 
> >     here is a new version of the bitmask type. It supports hash-indices as
> > well now, and fixes a bug in the definition of the <> operator.
> > 
> > I would appreciate it if somebody more knowledgable than myself would
> > look over the index definitions. They seem to work and are used by
> > postgres, so I guess they can't be all wrong. The hashing function is
> > the same as that for char's and comes straight out of the postgres
> > source code.
> > 
> > BTW, chapter 36 of the documentation could do with some additions, but I
> > don't feel knowledgable enough to attempt it. E.g. it shows how to put
> > an entry for the hashing into pg_amop, but never explains how to define
> > the entry in pg_amproc and doesn't tell you that you need to define a
> > separate hashing function. It took me a while of looking through the
> > other definitions and digging through the source code to come up with a
> > best guess.
> > 
> > Perhaps this could go into the contrib area if it passes muster, as it
> > is an example of a user-defined type with indices.
> > 
> > Cheers,
> > 
> > Adriaan
> 
> [application/x-gzip is not supported, skipping...]
> 
> 
> -- 
>   Bruce Momjian                        |  http://www.op.net/~candle
>   maillist@candle.pha.pa.us            |  (610) 853-3000
>   +  If your life is a hard drive,     |  830 Blythe Avenue
>   +  Christ can be your backup.        |  Drexel Hill, Pennsylvania 19026
> 
> ************
> 

Marc G. Fournier                   ICQ#7615664               IRC Nick: Scrappy
Systems Administrator @ hub.org 
primary: scrappy@hub.org           secondary: scrappy@{freebsd|postgresql}.org