From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
---|---|
To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | Andrew Dunstan <andrew(at)dunslane(dot)net>, Chris Browne <cbbrowne(at)acm(dot)org>, pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: create if not exists (CINE) |
Date: | 2009-05-06 01:49:22 |
Message-ID: | 603c8f070905051849h6e2e8d80s5cf4bce0fb0f8f8f@mail.gmail.com |
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Lists: | pgsql-hackers |
On Tue, May 5, 2009 at 9:45 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Robert Haas <robertmhaas(at)gmail(dot)com> writes:
>> 1. Why should it do nothing if the object already exists (as opposed
>> to any other alternative)?
>
>> Answer: Because that's what "CREATE IF NOT EXISTS" means when
>> interpreted as English.
>
> The argument was not about whether that is the "plain meaning" of the
> phrase; it was about whether that is a safe and useful behavior for a
> command to have. There is a pretty substantial group of people who
> think that it would be quite unsafe, which is why we failed to arrive
> at a consensus that this is a good thing to implement.
Who are these people other than you, and did you read the rest of my email?
...Robert
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