Re: CREATE IF NOT EXISTS INDEX

From: Josh Berkus <josh(at)agliodbs(dot)com>
To: Andres Freund <andres(at)2ndquadrant(dot)com>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, fabriziomello(at)gmail(dot)com, Pgsql Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: CREATE IF NOT EXISTS INDEX
Date: 2014-09-30 23:47:12
Message-ID: 542B4100.9040000@agliodbs.com
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On 09/30/2014 04:16 PM, Andres Freund wrote:
> On 2014-09-30 16:03:01 -0700, Josh Berkus wrote:
>> On 09/30/2014 03:53 PM, Andres Freund wrote:
>>> Good point. I think it's fair enough to only allow CINE on named
>>> indexes.
>>
>> On the other hand, the way we form system-generated names is predicable,
>> so I think it would be perfectly OK to include them. Desirable, in fact.
>
> It's not really that predicable. Think about expression indexes. They
> also don't contain information about opclasses et all.
>
> Seems like pit of hairy semantics.
>
>> Not that I'm a fan of omitting the name ...
>
> Me neither.

I'd be OK with a CINE which required you to name the index.

How does your patch work at present, Fabrizio?

--
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com

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