Ooops, fat-finger'd -hackers...
-Original Message-
Adding -hackers back to the list.
From: Leandro Guimarães Faria Corcete Dutra
Em Seg, 2006-01-16 às 12:52 -0600, Jim C. Nasby escreveu:
On Sat, Jan 14, 2006 at 07:28:21PM +0900, Michael Glaesemann wrote:
For UPDATEs and
Comparing two ints is much, much faster than comparing two text
fields. For a small number of comparisons, it doesn't matter. When
you're joining tables together, it's a different story.
That is where data independence would come handy... like a better enum,
with possreps and hidden
Em Qua, 2006-01-18 às 17:22 -0600, Jim C. Nasby escreveu:
Forgive me my ignorance, but are ints inherently faster to compare than
strings, or is it just an implementation detail? Ideally, if this is so
a fully data-independent system would create a hash behind the back of
user in order
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[EMAIL PROTECTED] On Behalf Of Leandro Guimarães Faria Corcete Dutra
Sent: Wednesday, January 18, 2006 4:31 PM
To: Jim C. Nasby
Cc: pgsql-hackers@postgresql.org
Subject: Re: FW: [HACKERS] Surrogate keys (Was: enums)
Em Qua, 2006-01-18 às 17:22 -0600, Jim C
Dann,
The primary key should be immutable, meaning that its value should not be
changed during the course of normal operations of the database.
Why? I don't find this statement to be self-evident. Why would we have ON
UPDATE CASCADE if keys didn't change sometimes?
At any rate, the use
