Re: [HACKERS] Arbitrary tuple size

Bruce Momjian <maillist@candle.pha.pa.us>

From: Bruce Momjian <maillist@candle.pha.pa.us>
To: Jan Wieck <jwieck@debis.com>
Cc: Tom Lane <tgl@sss.pgh.pa.us>, pgsql-hackers@postgreSQL.org
Date: 1999-07-09T04:36:03Z
Lists: pgsql-hackers
> > Aren't index tuples still tuples?  Can't they be split just like
> > regular tuples?
> 
>     Don't know, maybe.
> 
>     While  looking  for  some  places  where  tuple data might be
>     accessed directly inside of the  buffers  I've  searched  for
>     WriteBuffer() and friends. These are mostly used in the index
>     access methods and some other places where I  expected  them,
>     so  index  AM's  have  at  least to be carefully visited when
>     implementing tuple split.

See my recent mail.  heap_getnext and heap_fetch().  Can't get lower
access than that.

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