Le 2 mars 05, à 21:17, Hannu Krosing a écrit :
> Ühel kenal päeval (teisipäev, 1. märts 2005, 14:54-0500), kirjutas
> pgsql@mohawksoft.com:
>> Now, it occurs to me that if my document reference table can refer to
>> something other than an indexed primary key, I can save a lot of index
>> processing time in PostgreSQL if I can have a "safe" analogy to CTID.
>
> I guess you could work on making hash indexes better (for concurrent
> access).
You should have a look to this thread
http://archives.postgresql.org/pgsql-hackers/2005-02/msg00263.php
Take a look at this paper about "lock-free parallel hash table"
http://www.cs.rug.nl/~wim/mechver/hashtable/
> 'a "safe" analogy to CTID' looks remarkably like hash index
>
> --
> Hannu Krosing <hannu@tm.ee>
Cordialement,
Jean-Gérard Pailloncy