Re: [HACKERS] OO and tuples of different types

Chris wrote:
> 
> Came across this comment in execTuples.c...
> 
>  *In the implementation of nested-dot queries such as
>  *"retrieve (EMP.hobbies.all)", a single scan may return tuples
>  *of many types, so now we return pointers to tuple descriptors
>  *along with tuples returned via the tuple table.  This means
>  *we now have a bunch of routines to diddle the slot descriptors
>  *too.  -cim 1/18/90
> 
> Hmm. Another few years of reading the source and I'll probably
> understand all this :-) :-(.
> 
> Can anybody provide any insight? Like What EMP.hobbies.all meant in
> postquel?

You can get the latest sources for postgres 4.2 (from 30.06.1994) 
from http://db.cs.berkeley.edu/postgres.html 

IIRC they have a small manual inside the tarball

They should even compile ;), I remember having compiled them (on the 
then-current version of solaris) and played around a little with postquel

----------------
Hannu