Re: [HACKERS] OO and tuples of different types

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От Hannu Krosing
Тема Re: [HACKERS] OO and tuples of different types
Дата
Msg-id 3891E57A.B423844A@tm.ee
обсуждение исходный текст
Ответ на OO and tuples of different types  (Chris <chris@bitmead.com>)
Список pgsql-hackers
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?

I guess you can still pind the original Postgres 4.2 (the last (?) 
one with postquel) somewhere on the net. I used to have them around 
somewhere but I'm not sure where they are ...

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


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