From: Gregory Stark <stark@enterprisedb.com>
To: Jaime Casanova <systemguards@gmail.com>
Cc: Alvaro Herrera <alvherre@commandprompt.com>
Cc: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Jim Nasby <decibel@decibel.org>
Cc: Pavel Stehule <pavel.stehule@gmail.com>
Cc: PostgreSQL-development <pgsql-hackers@postgresql.org>
Subject: Re: what is difference between LOCAL and GLOBAL TEMP TABLES in PostgreSQL
Date: Tue, 03 Jul 2007 02:59:43 +0100
Message-ID: <87d4za5jsg.fsf@oxford.xeocode.com> (raw)
In-Reply-To: <c2d9e70e0707021846g4e75ff27l500e158339d62018@mail.gmail.com>
References: <162867790707011431u71e53543x19e64e5bb160b124@mail.gmail.com>
<17505.1183326406@sss.pgh.pa.us>
<19689F96-2FE1-4343-BE86-94317AEB0C57@decibel.org>
<19728.1183394601@sss.pgh.pa.us>
<20070703004634.GB4757@alvh.no-ip.org>
<c2d9e70e0707021846g4e75ff27l500e158339d62018@mail.gmail.com>
"Jaime Casanova" <systemguards@gmail.com> writes:
> while not just a new rekind indicating this is a template and not and
> actual table. and using that template for creating the actual tables?
For precisely the reason stated upthread. That would mean creating and
deleting catalog entries for every transaction. Imagine a busy OLTP system
running hundreds of transactions per second trying to use a temporary table
for intermediate results. Mixing DDL and DML is just as bad an idea behind the
scenes as it is for users.
--
Gregory Stark
EnterpriseDB http://www.enterprisedb.com
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To: pgsql-hackers@postgresql.org
Cc: stark@enterprisedb.com, systemguards@gmail.com, alvherre@commandprompt.com, tgl@sss.pgh.pa.us, decibel@decibel.org, pavel.stehule@gmail.com
Subject: Re: what is difference between LOCAL and GLOBAL TEMP TABLES in PostgreSQL
In-Reply-To: <87d4za5jsg.fsf@oxford.xeocode.com>
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