Re: [HACKERS] Max size of data types and tuples. (fwd)

Are we done with these issues, or are you still working on them, or is
Peter working on this?

>
> >
> > >
> > > Here's a blast from the past.  Shows how I keep those open issues in my
> > > mailbox.
> > >
> > > Forwarded message:
> > > > Date: Wed, 29 Jan 1997 13:38:10 -0500
> > > > From: aixssd!darrenk@abs.net (Darren King)
> > > > To: hackers@postgreSQL.org
> > > > Subject: [HACKERS] Max size of data types and tuples.
> >
> > Still buried in my 'received' box here too.  Can't imagine all the bugs
> > and/or issues you have kept in yours.
>
> Not too bad now.
>
> >
> >
> > > > 1.  Clean up the #defines for the max block size.  Currently,
> > > > there are at least four references to 8192...
> >
> > Think I found and fixed all of these up.
> >
> >
> > > > __These includes of storage/bufpage.h can be removed.__
> >
> > Still _quite_ a few #includes that can be removed throughout.  First,
> > "utils/elog.h" and "util/palloc.h" are include in "postgres.h", so are
> > unnecessary to include by themselves since "postgres.h" is include in
> > _every_ .c file, correct?
>
> Yes, must be included.  Period.  Even 3rd party apps.
>
> >
> > Also numerous #includes of "storage/bufpage.h" and "storage/fd.h" that are
> > unnecessary since the things they were included for (BLCKSZ and SEEK_*) are
> > now either in "config.h" or found in a system include file.
> >
> >
> > > > 2.  Once the block size issue is taken care of, calculate the
> > > > maximum tuple size more accurately.
> > ...
> > > > 3.  When #1 & #2 are resolved, let the textual fields have a max
> > > > of (MAX_TUPLE_SIZE - sizeof(int)).
> >
> > This could be done as soon as I come up with a way of defining the packet
> > size for the interfaces since this is the newest limiting factor.
> >
> > Peter's suggestion of backend functions for getting info might be the way to
> > go.  It would let the various interfaces get the info they need and would be
> > a step towards JDBC and ODBC compliance.
>
> Again, we could just set 3rd party apps to be the maximum tuple size we
> will ever have to support.
>
>
> --
> Bruce Momjian
> maillist@candle.pha.pa.us
>
>


--
Bruce Momjian
maillist@candle.pha.pa.us